Combo PON OLT packaging assembly and corresponding optical device

Abstract

The invention relates to the technical field of communication, and provides a Combo PON OLT packaging assembly and a corresponding optical device. Wherein a first detection assembly accommodating cavity, a second detection assembly accommodating cavity, a third detection assembly accommodating cavity, a laser assembly accommodating cavity and an adjusting cavity are respectively arranged; the detection assembly containing cavities, the laser assembly containing cavities and the adjusting cavities are separated through partition plates, and light passing openings are formed in the partition plates and used for communicating the corresponding containing cavities with the adjusting cavities. The adjusting cavity is used for allowing the emitted light emitted by the laser assembly containing cavity to be emitted from the light adaption opening and enabling the detection light to reach the detection assembly containing cavity through the light passing opening. According to the invention, each component is located in a relatively independent space, so that mutual crosstalk is reduced, and detection light or emission light of the detection component or the laser component in each independent space can be subjected to combined-wave emission or split-wave receiving in the adjusting cavity, so that the spatial independence of each component is realized, and meanwhile, the coupling of light paths is realized; and a packaging basis is provided for realizing a 3-receiving 3-transmitting 6-direction OLT device.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a Combo PON OLT packaging component and a corresponding optical device. Background Art

[0002] ComboPON (Passive Optical Network) OLT (optical line terminal) is divided into four ports, two transmitting ports (center wavelength 1577nm and center wavelength 1490nm), two receiving ports (center wavelength 1310nm and center wavelength 1270nm band). The existing solution is to use TFF (Thin Film Filter) splitting method, four ports use TO packaging method, TFF is embedded between bases, four ports TO and base are coupled by laser welding or adhesive, and finally one optical port is used to output and input light. Two TX ports and two RX ports are distributed in different directions, which are called 4-way devices. The current OSA design of ComboPON OLT is composed of 4 TO seats and some other structural parts. There are many components, the manufacturing process is complicated, and the cost is relatively high. Moreover, the existing Combo PON OLT simultaneously encapsulates some BOX packaging structures of the transmitter and the receiver. The signal of the transmitter is easy to affect the receiver, causing large electrical and optical crosstalk. With the development of communication technology, higher requirements are placed on the bandwidth of OLT devices, requiring them to provide a higher number of channels, such as 6-way OLT devices.

[0003] In view of this, overcoming the defects of the prior art is an urgent problem to be solved in the field of this technology. Summary of the invention

[0004] The technical problem to be solved by the embodiments of the present invention is that the existing Combo PON OLT device simultaneously encapsulates some BOX packaging structures of the transmitting end and the receiving end. The signal of the transmitting end is easy to affect the receiving end, causing large electrical crosstalk and optical crosstalk, and there is no 6-way OLT device.

[0005] The embodiment of the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a Combo PON OLT packaging assembly, including a housing 1 and a housing cover 2;

[0007] The side wall of the housing 1 is provided with an optical adapter port 11 for arranging an optical adapter component;

[0008] A first detection component accommodating cavity 12 and a second detection component accommodating cavity 13 are respectively provided at two corner positions of the housing 1 close to the optical adapter port 11, for accommodating the first detection component and the second detection component respectively; a third detection component accommodating cavity 14 is provided at a corner position of the housing 1 away from the optical adapter port 11, for accommodating the third detection component; a laser component accommodating cavity 15 is provided at another corner position of the housing 1 away from the optical adapter port 11, for accommodating each laser component;

[0009] An adjustment cavity 16 is also provided between the first detection component accommodating cavity 12, the second detection component accommodating cavity 13, the third detection component accommodating cavity 14 and the laser component accommodating cavity 15; the first detection component accommodating cavity 12, the second detection component accommodating cavity 13, the third detection component accommodating cavity 14, the laser component accommodating cavity 15 and the adjustment cavity 16 are separated by corresponding partitions, and a light opening 17 is provided on the partition for conducting the optical path of the corresponding accommodating cavity with the adjustment cavity 16;

[0010] The regulating cavity 16 is used to allow the emission light emitted from the laser component accommodating cavity 15 to be emitted from the optical adapter port 11, and to adjust the optical path of each detection light incident on the optical adapter port 11, so that the corresponding detection light reaches the corresponding detection component accommodating cavity through the corresponding light opening 17.

[0011] Preferably, a plurality of filters are arranged on the cavity wall of the adjustment cavity 16, and based on the different positions of the filters, the filters are divided into a first filter 180, a second filter 181, a third filter 182, a fourth filter 183 and a fifth filter 184;

[0012] The first optical filter 180 is arranged at the first optical port 170, the second optical filter 181 is arranged at the second optical port 171, the third optical filter 182 is arranged at the third optical port 172, and the fourth optical filter 183 and the fifth optical filter 184 are arranged at the positions opposite to the first optical filter 180, the second optical filter 181 and the third optical filter 182; wherein the first optical port 170 is a light port for conducting the second detection component accommodating cavity 13 and the adjustment cavity 16, the second optical port 171 is a light port for conducting the laser component accommodating cavity 15 and the adjustment cavity 16, and the third optical port 172 is a light port for conducting the third detection component accommodating cavity 14 and the adjustment cavity 16;

[0013] The second optical filter 181 is used to transmit each outgoing light from the laser component accommodating cavity 15 to the optical adapter port 11, and reflect each detection light emitted from the optical adapter port 11 to the fourth optical filter 183. The fourth optical filter 183 is used to reflect each detection light to the third optical filter 182. The third optical filter 182 is used to transmit the third detection light among the detection lights to the third detection component accommodating cavity 14, and reflect the first detection light and the second detection light among the detection lights to the fifth optical filter 184. The fifth optical filter 184 is used to reflect the first detection light and the second detection light to the first optical filter 180. The first optical filter 180 is used to transmit the second detection light to the second detection component accommodating cavity 13, and reflect the first detection light to the fourth light through port 173, so that the first detection light is transmitted from the fourth light through port 173 to the first detection component accommodating cavity 12.

[0014] Preferably, the laser assembly accommodating chamber 15 includes a first accommodating chamber 150, a second accommodating chamber 151 and an adjusting chamber 152;

[0015] The first accommodation chamber 150 is used to accommodate the first laser assembly and the second laser assembly, and the second accommodation chamber 151 is used to accommodate the third laser assembly. The first accommodation chamber 150, the second accommodation chamber 151 and the adjustment chamber 152 are separated by corresponding partitions, and a light opening 17 is provided on the partition to make the light paths between the first accommodation chamber 150, the second accommodation chamber 151 and the adjustment chamber 152 conduct.

[0016] The adjustment chamber 152 is used to adjust the optical path of each emitted light so that the emitted light of each wavelength is combined and emitted from the light opening 17 of the laser component accommodating cavity 15 .

[0017] Preferably, a sixth filter 185 is provided at the location of the fifth light opening 174, and a seventh filter 186 is provided in the second receiving chamber 151; wherein the fifth light opening 174 is a light opening 17 for conducting light between the first receiving chamber 150 and the regulating chamber 152;

[0018] The seventh filter 186 is used to transmit the third emitted light and reflect the second emitted light, so that the second emitted light and the third emitted light are combined and transmitted to the sixth filter 185. The seventh filter 186 is used to transmit the first emitted light and reflect the second emitted light and the third emitted light, so that each emitted light is combined and transmitted from the corresponding light outlet 17 to the adjustment cavity 16.

[0019] Preferably, a bayonet 19 and a movable clamping plate 3 matching with the bayonet 19 are further provided between the third detection component accommodating cavity 14 and the laser component accommodating cavity 15;

[0020] The movable clamping plate 3 is used to be arranged at the position of the clamping port 19 to separate the third detection component accommodating cavity 14 from the laser component accommodating cavity 15 .

[0021] Preferably, the bayonet 19 comprises a first bayonet platform 190 and a second bayonet platform 191 disposed on the first bayonet platform 190, and concave platforms of different heights are disposed on both sides of the second bayonet platform 191;

[0022] The movable card plate 3 includes a common plate 31 and a first extension plate 32 and a second extension plate 33 extending from one end of the common plate 31; the common plate 31 is used to be arranged on the first card platform 190 to separate the third detection component accommodating cavity 14 and the laser component accommodating cavity 15;

[0023] A gap is provided between the first extension plate 32 and the second extension plate 33 for clamping the second clamping platform 191. The first extension plate 32 and the second extension plate 33 of the movable clamping plate 3 are configured to match the corresponding recessed platform, so that the movable clamping plate 3 is fixed by the second clamping platform 191, the first extension plate 32 and the second extension plate 33.

[0024] Preferably, a PEI lens 4 is provided in the first detection component accommodating cavity 12, the second detection component accommodating cavity 13 and the third detection component accommodating cavity 14;

[0025] The PEI lens 4 includes a first optical surface 41, a second optical surface 42 and a third optical surface 43, wherein the second optical surface 42 is disposed at 45 degrees to the first optical surface 41 and the third optical surface 43 respectively;

[0026] The first optical surface 41 of the PEI lens 4 is disposed adjacent to the corresponding light opening 17 , and the center of the third optical surface 43 of the PEI lens 4 is an aspherical lens for converging the corresponding detection light and transmitting the converged detection light to the detection component below the third optical surface 43 .

[0027] In a second aspect, the present invention provides a Combo PON OLT optical device, including the Combo PON OLT packaging component described in the first aspect and a first detection component 51, a second detection component 52, a third detection component 53, a first laser component 54, a second laser component 55, a third laser component 56 and an optical adapter 57 encapsulated in the Combo PON OLT packaging component.

[0028] Preferably, the first laser assembly 54 and the second laser assembly 55 share the same TEC assembly.

[0029] Preferably, the wavelengths of the emitted lights of the optical device are 1342 nm, 1490 nm and 1577 nm respectively.

[0030] The present invention sets up various accommodating cavities for accommodating corresponding detection components or laser components, thereby isolating the components so that each component is located in a relatively independent space, thereby reducing mutual crosstalk. At the same time, the present embodiment also sets up an adjustment cavity 16, so that the detection light or emission light of the detection component or laser component in each independent space can be combined and emitted or divided and received in the adjustment cavity 16, thereby achieving the coupling of the optical path while the components are independent in space, and providing a packaging basis for realizing a 6-way OLT device with 3 receptions and 3 transmissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a structural schematic diagram of a Combo PON OLT packaging component provided by an embodiment of the present invention;

[0033] Figure 2 is a structural schematic diagram of a second Combo PON OLT packaging component provided by an embodiment of the present invention;

[0034] Figure 3 1 is a schematic structural diagram of a third Combo PON OLT packaging component provided by an embodiment of the present invention;

[0035] Figure 4 is a schematic structural diagram of a fourth Combo PON OLT packaging component provided by an embodiment of the present invention;

[0036] Figure 5 is a structural schematic diagram of a fifth Combo PON OLT packaging component provided by an embodiment of the present invention;

[0037] Figure 6 is a structural schematic diagram of a sixth Combo PON OLT packaging component provided by an embodiment of the present invention;

[0038] Figure 7 is a structural schematic diagram of a seventh Combo PON OLT packaging component provided by an embodiment of the present invention;

[0039] Figure 8 is a schematic structural diagram of an eighth Combo PON OLT packaging component provided by an embodiment of the present invention;

[0040] Fig. 9 It is a structural schematic diagram of an active card board and a card slot in a Combo PON OLT packaging component provided by an embodiment of the present invention;

[0041] Fig.10 It is a structural schematic diagram of an active card board in a Combo PON OLT packaging assembly provided by an embodiment of the present invention;

[0042] Fig.11 It is a schematic diagram of the force after the movable card board in a Combo PON OLT packaging assembly provided by an embodiment of the present invention is installed;

[0043] Fig.12 It is a structural schematic diagram of a PEI lens in a Combo PON OLT packaging component provided by an embodiment of the present invention;

[0044] Fig.13 is a schematic structural diagram of a ninth Combo PON OLT packaging component provided by an embodiment of the present invention;

[0045] Fig.14 is a schematic structural diagram of a tenth Combo PON OLT packaging component provided by an embodiment of the present invention;

[0046] Fig.15 is a structural schematic diagram of an eleventh Combo PON OLT packaging component provided by an embodiment of the present invention;

[0047] Fig.16 is a structural schematic diagram of a twelfth Combo PON OLT packaging component provided by an embodiment of the present invention;

[0048] Fig.17 is a schematic structural diagram of a thirteenth Combo PON OLT packaging component provided by an embodiment of the present invention;

[0049] Fig.18 14 is a schematic structural diagram of a Combo PON OLT packaging component provided by an embodiment of the present invention;

[0050] Fig.19 It is a schematic diagram of the structure of a Combo PON OLT optical device provided by an embodiment of the present invention.

[0051] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0052] 1. Shell; 11. Optical adapter port; 12. First detection component accommodating chamber; 13. Second detection component accommodating chamber; 14. Third detection component accommodating chamber; 15. Laser component accommodating chamber; 150. First accommodating chamber; 151. Second accommodating chamber; 152. Adjustment chamber; 16. Adjustment chamber; 160. First adjustment chamber; 161. Second adjustment chamber; 17. Light port; 170. First light port; 171. Second light port; 172. Third light port; 173. Fourth light port; 174. Fifth light port; 175. Sixth light port; 176. Seventh light port; 180. First filter; 181. Second filter; 182. Third filter; 183 , fourth optical filter; 184, fifth optical filter; 185, sixth optical filter; 186, seventh optical filter; 19, bayonet; 190, first card platform; 191, second card platform; 2, shell cover; 3, movable card plate; 31, common plate; 32, first extension plate; 33, second extension plate; 34, bump; 4, PEI lens; 41, first optical surface; 42, second optical surface; 43, third optical surface; 51, first detection component; 52, second detection component; 53, third detection component; 54, first laser component; 55, second laser component; 56, third laser component; 57, optical adapter; 6, insulator pin; 7, ceramic pin; 71, groove. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0054] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and does not require the present invention to be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. The terms "first", "second" and the like in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more. In the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. In addition, the term "coupling" can be a way of electrically connecting to achieve signal transmission. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0055] Embodiment 1:

[0056] The existing Combo PON OLT device simultaneously encapsulates some BOX packaging structures of the transmitting end and the receiving end. The signal of the transmitting end is easy to affect the receiving end, causing large electrical crosstalk and optical crosstalk, and there is no 6-way OLT device. In order to solve this problem, embodiment 1 of the present invention provides a Combo PON OLT packaging component, such as Figure 1 and Figure 2 As shown, it includes a housing 1 and a housing cover 2; it should be noted that, in order to show the structure inside the housing 1, the housing cover 2 is only Figure 1 It is reflected in the figure and has been hidden in the subsequent drawings, but it does not mean that it does not exist.

[0057] The side wall of the housing 1 is provided with an optical adapter port 11 for setting an optical adapter component; at two corners of the housing 1 close to the optical adapter port 11, a first detection component accommodating cavity 12 and a second detection component accommodating cavity 13 are respectively provided for accommodating the first detection component and the second detection component; at a corner of the housing 1 away from the optical adapter port 11, a third detection component accommodating cavity 14 is provided for accommodating the third detection component; at another corner of the housing 1 away from the optical adapter port 11, a laser component accommodating cavity 15 is provided for accommodating Each laser component; an adjustment cavity 16 is also provided between the first detection component accommodating cavity 12, the second detection component accommodating cavity 13, the third detection component accommodating cavity 14 and the laser component accommodating cavity 15; the first detection component accommodating cavity 12, the second detection component accommodating cavity 13, the third detection component accommodating cavity 14, the laser component accommodating cavity 15 and the adjustment cavity 16 are separated by corresponding partitions, and a light-through port 17 is provided on the partition for conducting the optical path of the corresponding accommodating cavity with the adjustment cavity 16; wherein the adjustment cavity 16 is conducted with the optical adapter port 11. Each accommodating cavity is respectively conducted with the adjustment cavity 16 by the corresponding light-through port 17, and the optical path conduction means that the emitted light in the corresponding accommodating cavity can be transmitted to the adjustment cavity 16 through the corresponding light-through port 17, and the corresponding detection light in the adjustment cavity 16 can be transmitted to the corresponding accommodating cavity through the corresponding light-through port 17.

[0058] The regulating cavity 16 is used to allow the emission light emitted from the laser component accommodating cavity 15 to be emitted from the optical adapter port 11, and to adjust the optical path of each detection light incident on the optical adapter port 11, so that the corresponding detection light reaches the corresponding detection component accommodating cavity through the corresponding light opening 17. It should be noted here that the reaching the corresponding detection component accommodating cavity actually means: reaching the corresponding detection component accommodating cavity, and being received by the corresponding detection component. Among them, the cavity shape of each accommodating cavity and the regulating cavity 16 is set by those skilled in the art based on the packaging requirements of the detection component and the laser component. In the corresponding accommodating cavity, a connecting component for connecting the corresponding detection component or laser component to the outside world is also provided. Figure 2 As shown, a plurality of insulator pins 6 are arranged in the first detection component accommodating cavity 12 and the second detection component accommodating cavity 13, and a glass insulator is arranged outside the insulator pins 6, and the insulator pins 6 are electrically connected to the corresponding detection components. The definition of each insulator pin 6 corresponds to the pad of the corresponding detection component.

[0059] A ceramic pin 7 is provided on one side of the third detection component accommodating cavity 14 and the laser component accommodating cavity 15, which is used to form an electrical connection with the corresponding detection component or laser component, and the ceramic pin 7 is connected to the gold finger on the same side, and the gold finger is used to connect to the outside world, thereby realizing the connection between the detection component or laser component and the outside world. Since the high-frequency performance of the ceramic pin is better than that of the glass insulator pin at a high-speed 50G rate, and the cost of the glass insulator pin is relatively low compared to the ceramic pin, in this embodiment, the first detection component, the second detection component and the third laser component of the low-speed channel use the insulator pin 6 to connect to the outside world, and the third detection component, the first laser component and the second laser component of the high-speed channel use the ceramic pin 7 to connect to the outside world, so that the ceramic pin and the glass insulator pin are combined to achieve both cost considerations and the overall performance considerations of the optical device.

[0060] Wherein, the first detection component is used to receive the first detection light, the second detection component is used to receive the second detection light, and the third detection component is used to receive the third detection light. Fig.19 As shown, each laser assembly includes a first laser assembly 54, a second laser assembly 55 and a third laser assembly 56, wherein the first laser assembly 54 is used to emit a first emission light, the second laser assembly 55 is used to emit a second emission light, and the third laser assembly 56 is used to emit a third emission light. The center wavelengths of the first emission light, the second emission light, the third emission light, the first detection light, the second detection light and the third detection light are different. In an optional embodiment, the wavelengths of the first emission light, the second emission light and the third emission light are 1342nm, 1490nm and 1577nm respectively; the wavelengths of the first detection light, the second detection light and the third detection light are 1286nm, 1270nm and 1310nm respectively. The first laser assembly 54, the second laser assembly 55 and the third laser assembly 56 form a light emitting assembly, and the first detection assembly, the second detection assembly and the third detection assembly form a light receiving assembly.

[0061] Among them, by setting each detection component at the corner position of the housing 1, the distance between each second detection component can be increased as much as possible within a limited space, thereby reducing optical crosstalk and electrical crosstalk. And the laser component is set in the laser component accommodating cavity 15, so as to increase the distance between each detection component and reduce the crosstalk effect of light detection on light emission. This embodiment adopts a BOX structure, omitting the header and cap of the TO package, and concentrating the 3-way transmission optical path port and the 3-way receiving optical path port inside a housing 1, so that the overall OSA size structure is compact and smaller, leaving sufficient space for the module PCB. This embodiment sets each accommodating cavity to accommodate the corresponding detection component or laser component, so that each component can be separated and located in a relatively independent space, thereby reducing mutual crosstalk. At the same time, this embodiment also sets an adjustment cavity 16, so that the detection light or emission light of the detection component or laser component in each independent space can be combined and emitted or divided in the adjustment cavity 16, thereby realizing the coupling of the optical path while the components are independent in space, and providing a packaging basis for realizing a 6-way OLT device with 3 receptions and 3 transmissions.

[0062] In actual use, Figure 3 As shown, the cavity wall of the adjustment cavity 16 is provided with a plurality of filters, and the cavity wall shape of the adjustment cavity 16 is obtained according to the analysis of the placement angle requirements of each filter, so that each filter can be directly mounted on the cavity wall; based on the different positions of the filters, each filter is divided into a first filter 180, a second filter 181, a third filter 182, a fourth filter 183 and a fifth filter 184. The first optical filter 180 is arranged at the first light opening 170, the second optical filter 181 is arranged at the second light opening 171, the third optical filter 182 is arranged at the third light opening 172, and the fourth optical filter 183 and the fifth optical filter 184 are arranged at the opposite sides of the first optical filter 180, the second optical filter 181 and the third optical filter 182; wherein, the first light opening 170 is a light opening 17 for connecting the second detection component accommodating chamber 13 and the adjustment chamber 16, the second light opening 171 is a light opening 17 for connecting the laser component accommodating chamber 15 and the adjustment chamber 16, and the third light opening 172 is a light opening 17 for connecting the third detection component accommodating chamber 14 and the adjustment chamber 16, and is used to connect the optical paths between the first accommodating chamber 150, the second accommodating chamber 151 and the adjustment chamber 152.

[0063] The second optical filter 181 is used to transmit each outgoing light from the laser component accommodating cavity 15 to the optical adapter port 11, and reflect each detection light emitted from the optical adapter port 11 to the fourth optical filter 183. The fourth optical filter 183 is used to reflect each detection light to the third optical filter 182. The third optical filter 182 is used to transmit the third detection light among the detection lights to the third detection component accommodating cavity 14, and reflect the first detection light and the second detection light among the detection lights to the fifth optical filter 184. The fifth optical filter 184 is used to reflect the first detection light and the second detection light to the first optical filter 180. The first optical filter 180 is used to transmit the second detection light to the second detection component accommodating cavity 13, and reflect the first detection light to the fourth light through port 173, so that the first detection light is transmitted from the fourth light through port 173 to the first detection component accommodating cavity 12.

[0064] As a preferred implementation, the second light opening 171 is disposed on the optical axis of the optical adapter port 11 , so that each emitted light directly passes through the second optical filter 181 and is then transmitted to the optical adapter port 11 for output. Taking the wavelengths of the first emission light, the second emission light and the third emission light as 1342nm, 1577nm and 1490nm respectively, and the wavelengths of the first detection light, the second detection light and the third detection light as 1310nm, 1270nm and 1286nm respectively, the transmission and reflection requirements of each filter are as follows: the second filter 181 reflects wavelengths of 1310nm, 1270nm and 1286nm, and transmits wavelengths of 1342nm, 1577nm and 1490nm; the fourth filter 183 and the fifth filter 184 reflect wavelengths of 1310nm, 1270nm and 1286nm; the third filter 182 transmits a wavelength of 1286nm, and reflects wavelengths of 1310nm and 1270nm; the first filter 180 transmits a wavelength of 1270nm and reflects 1310nm.

[0065] Without considering the optical path deviation caused by the light passing through the medium, the first optical filter 180 is set at the intersection of the first optical path and the second optical path, and is set perpendicularly relative to the center line between the first optical path and the second optical path, wherein the first optical path is the optical path for the first detection component to receive the first detection light, and the second optical path is the optical path for the second detection component to receive the second detection light. As a preferred embodiment, the optical path for the third detection component to receive the third detection light is parallel to the optical axis of the optical adapter port 11, and the second optical filter 181 and the fourth optical filter 183 are parallel, so that each detection light is injected into the third detection component accommodating cavity 14 parallel to the optical axis through the second optical filter 181 and the fourth optical filter 183, and is received by the third detection component.

[0066] In order to ensure that the detection light only enters the corresponding accommodating cavity, it is necessary to split and divide different lights. In this embodiment, different filters are set at each light opening 17 to split and divide different lights. The filter can be set at the light opening 17 by bonding, and the size of each filter matches the size of the light opening 17 to ensure that after the filter is installed at the light opening 17, the top surface of the filter is at the same height as the top surface of the corresponding cavity wall, that is, the top surface of the filter is flush with the top surface of the corresponding partition, so that each cavity forms a complete independent space with the cooperation of the shell cover 2. In an optional embodiment, such as Figure 4 As shown, the laser component accommodating chamber 15 includes a first accommodating chamber 150, a second accommodating chamber 151 and an adjusting chamber 152; the first accommodating chamber 150 is used to accommodate the first laser component 54 and the second laser component 55, the second accommodating chamber 151 is used to accommodate the third laser component 56, the first accommodating chamber 150, the second accommodating chamber 151 and the adjusting chamber 152 are separated by corresponding partitions, and a light opening 17 is provided on the partition; the adjusting chamber 152 is used to adjust the optical path of each emitted light, so that the emitted light of each wavelength is combined and emitted from the light opening 17 of the laser component accommodating chamber 15. The adjustment of the optical path of each emitted light can be achieved by setting a filter, such as Figure 5 As shown, specifically: a sixth filter 185 is arranged at the position of the fifth light opening 174, and a seventh filter 186 is arranged in the second receiving chamber 151; wherein, the fifth light opening 174 is a light opening for conducting light between the first receiving chamber 150 and the adjustment chamber 152; the seventh filter 186 is arranged at the relative position of the sixth light opening 175 and the seventh light opening 176, the sixth light opening 175 is a light opening for conducting light between the first receiving chamber 150 and the second receiving chamber 151, and the seventh light opening 176 is a light opening for conducting light between the second receiving chamber 151 and the adjustment chamber 152.

[0067] The seventh filter 186 is used to transmit the third emitted light and reflect the second emitted light, so that the second emitted light and the third emitted light are combined and transmitted to the sixth filter 185. The seventh filter 186 is used to transmit the first emitted light and reflect the second emitted light and the third emitted light, so that each emitted light is combined and transmitted from the corresponding light outlet 17 to the adjustment cavity 16. Taking the wavelengths of the first emitted light, the second emitted light and the third emitted light as 1342nm, 1577nm and 1490nm respectively as an example, the transmission and reflection requirements of each filter in the laser component accommodating cavity 15 are as follows: the seventh filter 186 is used to reflect the wavelength of 1577nm and transmit the wavelength of 1490nm; the sixth filter 185 is used to reflect the wavelengths of 1577nm and 1490nm, and transmit the wavelength of 1342nm; wherein, without considering the optical path deviation caused by the light passing through the medium, as a preferred embodiment, the optical paths of the first detection component and the second detection component are parallel to the optical axis of the optical adapter 11, the seventh filter 186 is parallel to the sixth filter 185, and the reflection surfaces of the two are arranged oppositely, so that the second emitted light passes through the sixth light port 175 along the direction parallel to the optical axis of the optical adapter 11 to reach the seventh filter 186, and is then reflected by the seventh filter through the seventh light port 176 to the sixth filter, and is emitted along the optical axis after being reflected by the sixth filter.

[0068] like Figure 6 and Figure 7 As shown, a bayonet 19 and a movable clamp 3 matching the bayonet 19 are also provided between the third detection component accommodating cavity 14 and the laser component accommodating cavity 15; the movable clamp 3 is used to be provided at the bayonet 19 to separate the third detection component accommodating cavity 14 and the laser component accommodating cavity 15. Figure 8As shown, the bayonet 19 includes a first card platform 190 and a second card platform 191 arranged on the first card platform 190, and recesses of different heights are arranged on both sides of the second card platform 191; the movable card plate 3 includes a common plate 31 and a first extension plate 32 and a second extension plate 33 extending from one end of the common plate 31; the common plate 31 is used to be arranged on the first card platform 190 to separate the third detection component accommodating cavity 14 and the laser component accommodating cavity 15; a gap is arranged between the first extension plate 32 and the second extension plate 33 for clamping the second card platform 191, and the first extension plate 32 and the second extension plate 33 of the movable card plate 3 are arranged to match the corresponding recesses, so that the movable card plate 3 is fixed by the second card platform 191, the first extension plate 32 and the second extension plate 33. The bayonet 19 and the movable card plate 3 together constitute a partition between the third detection component accommodating chamber 14 and the laser component accommodating chamber 15. At the same time, since the movable card plate 3 has the flexibility of being removable or installed, the installation time can be freely selected, so that the movable card plate 3 can be installed after the wiring of the corresponding components in the laser component accommodating chamber 15 and the third detection component accommodating chamber 14 is completed, thereby facilitating the wiring. It should be noted here that Figure 8 It is only a schematic diagram to schematically show the matching relationship between the bayonet 19 and the movable card plate 3. In actual use, if the Figure 8 In the shell shown, the depth of the second extension plate 33 corresponding to the movable clamping plate 3 should be greater than the depth of the first extension plate 32 , so as to be compatible with the concave platforms on both sides of the second clamping platform 191 in the clamping port 19 .

[0069] In a preferred embodiment, the length of the movable card plate 3 is slightly longer than the length of the bayonet 19, that is, the length of the movable card plate 3 exceeds the first preset value of the length of the bayonet 19. Fig. 9 For example, l1-L1 is the first preset value. When the movable clamp 3 is installed at the position of the clamp 19, it elastically abuts against both ends of the clamp 19, so that the movable clamp 3 does not shake or move, thereby ensuring the stability of the entire assembly. Among them, the first preset value is obtained by a technician in this field based on the material analysis of the movable clamp 3 and the housing 1. Among them, Fig. 9 Yes Figure 6 The position of the bayonet 19 shown is enlarged and compared with the movable clamping plate 3 which is enlarged in the same manner.

[0070] Among them, the length between the end of the first extension plate 32 and the fork of the movable card plate 3 is slightly longer than the length of the second card platform 191, and the length between the end of the second extension plate 33 and the fork of the movable card plate 3 is slightly longer than the length of the second card platform 191; the fork of the movable card plate 3 is the position where the first extension plate 32 and the second extension plate 33 on the movable card plate 3 are forked, that is, the length between the end of the first extension plate 32 and the fork of the movable card plate 3 and the length between the end of the second extension plate 33 and the fork of the movable card plate 3 exceed the second preset value of the length of the second card platform 191, so that Fig. 9 For example, l2-L2 is the second preset value. The second preset value is obtained by a person skilled in the art based on material analysis of the movable card plate 3 and the housing 1.

[0071] The concave platforms on both sides of the second card platform are set to be concave arcs, and correspondingly, the ends of the first extension plate 32 and the second extension plate 33 are set to be convex arcs matching the concave arcs. The concave platforms on both sides of the second card platform are respectively called the first concave platform and the second concave platform, and the arc angles of the first concave platform and the second concave platform are greater than the arc angles of the ends of the first extension plate 32 and the second extension plate 33, and the arc angles of the first extension plate 32 and the second extension plate 33 are less than 45°, so that Fig. 9 For example, ∠α>∠θ, and ∠θ is less than 45°. Therefore, when the movable clamping plate 3 is installed at the position of the clamping port 19, the first extension plate 32 and the second extension plate 33 are slightly displaced to both sides in the first concave platform and the second concave platform along the concave arc (because the length between the end of the first extension plate 32 and the fork of the movable clamping plate 3 and the length between the end of the second extension plate 33 and the fork of the movable clamping plate 3 are slightly longer than the length of the second clamping platform 191, the first extension plate 32 and the second extension plate 33 are inevitably displaced to both sides due to the elastic contact between the end and the concave platform), thereby forming a forked stable structure. In this state, the force diagram of the movable clamping plate 3 is as shown in FIG. Fig.11 As shown, the movable clamping plate 3 is fixed by applying force in three directions, so that the internal packaging structure of the component is stable, ensuring that the device will not be displaced due to transportation or collision.

[0072] In combination with the above preferred embodiment, when a ceramic pin 7 is provided on one side of the third detection component accommodating cavity 14 and the laser component accommodating cavity 15, the common plate 31 is further provided with a bump 34 corresponding to the position of the ceramic pin 7, such as Fig.10 Correspondingly, a groove 71 matching the bump 34 is provided at the position of the ceramic pin 7 corresponding to the bump 34. The length of the groove 71 is slightly longer than the length of the bump 34, that is, the length of the groove 71 exceeds the third preset value of the length of the bump 34. Fig. 9For example, L3-l3 is the third preset value. The protrusion 34 has space for front-to-back displacement in the groove 71 (shown as left-to-right displacement in the accompanying drawings), so that the groove 71 can allow the movable card plate 3 to be slightly displaced due to elastic abutment after being installed in the bayonet 19. The third preset value is obtained by those skilled in the art based on material analysis of the movable card plate 3 and the housing 1. In an optional embodiment, the first preset value can be 0.2mm, the second preset value can be 0.15mm, the third preset value can be 0.2mm, ∠α can be 45°, and ∠θ can be 40°.

[0073] like Fig.19 As shown, there is also a preferred embodiment: a PEI lens 4 is disposed in the first detection component accommodating cavity 12, the second detection component accommodating cavity 13 and the third detection component accommodating cavity 14; Fig.12 As shown, the PEI lens 4 includes a first optical surface 41, a second optical surface 42 and a third optical surface 43, and the second optical surface 42 is respectively arranged at 45° to the first optical surface 41 and the third optical surface 43; the first optical surface 41 of the PEI lens 4 is arranged adjacent to the corresponding light opening 17, and the center of the third optical surface 43 of the PEI lens 4 is an aspherical lens, which is used to converge the corresponding detection light and transmit the converged detection light to the detection component below the third optical surface 43.

[0074] Among them, the first optical surface 41 is a plane perpendicular to the direction of the incident light, the second optical surface 42 is a plane at an angle of 45°, and the third optical surface 43 is a plane with an aspheric lens. The first optical surface 41 is used as a carrier, and a filter is bonded to the plane. The light is vertically incident, passes through the filter and the first optical surface 41 in sequence, and then passes through the second optical surface 42 at an angle of 45° to be fully reflected. The light turns 90° and is incident on the third optical surface. After being shaped by the aspheric lens, the parallel light is focused onto the photosensitive surface of the detection component.

[0075] A first mounting piece and a second mounting piece are provided in the first detection component accommodating cavity 12 and the second detection component accommodating cavity 13, the first PEI lens 4 is provided on the first mounting piece, the second PEI lens 4 is provided on the second mounting piece, the first mounting piece is provided near the fourth light-through port 173, and the second mounting piece is provided near the first light-through port 170. Both the first mounting piece and the second mounting piece are higher than the plane where the insulator pin 6 is provided, so as to ensure that the corresponding detection component can be provided below the third optical surface 43, wherein the mounting piece includes at least one mounting groove, so that the PEI lens 4 is installed in the mounting groove, so as to realize the positioning of the PEI lens 4.

[0076] In actual use, a first optical isolator is provided between the sixth filter 185 and the first laser assembly 54 for optically isolating the first emitted light, and a second optical isolator is provided between the sixth filter 185 and the seventh filter 186 for optically isolating the second emitted light and the third emitted light, allowing the forward transmitted light to pass through and isolating the reverse transmitted light to prevent the reverse transmitted light from affecting the stability of the system and avoid crosstalk between the emitted light and the received light.

[0077] The fifth optical port 174 is provided with a first adapter port for installing and fixing the first optical isolator, and the seventh optical port 176 is provided with a second adapter port for installing and fixing the second optical isolator. Moreover, the laser assembly and the detection assembly are both arranged in relatively independent spaces, which can effectively reduce the influence of the signal at the transmitting end on the receiving end, and can also effectively reduce the influence of the signal at the receiving end on the transmitting end. In this embodiment, a lens hole is also provided at the optical adapter port 11, and the lens hole is used to fix the third lens, which is used to shape the light beam, converge the collimated parallel light into the optical adapter 57, or shape the divergent light from the optical adapter 57 into collimated parallel light.

[0078] In this embodiment, the non-adjustable chip front-end lens in the TO packaging method is improved to a free space optical path in the BOX packaging method. For each wavelength channel, it is a coupled optical path composed of two lenses. The chip front-end lens can be freely adjusted, and the theoretical coupling efficiency can reach more than 85%; the OSA optical path of the Combo PON OLT is completely encapsulated inside the airtight BOX, which effectively reduces the influence of water vapor on the optical path structure and improves the reliability of the optical device; the solution of this embodiment simplifies the optical path of the OSA of the ComboPON OLT to a very simple level, significantly reduces the process steps, and has a lower cost than the TO packaging method.

[0079] In this embodiment, the material of the shell 1 and the shell cover 2 can be Kovar. First, it provides an airtight package for all components to prevent water vapor and the like from corroding the optical elements. Compared with non-airtight packaging, its reliability is better; second, it serves as a carrier to carry other optical elements to form a stable optical path; third, the shell 1 provides a bottom heat dissipation channel to quickly conduct away the heat generated by the chip to avoid heat accumulation and cause local excessive temperature.

[0080] In this embodiment, a lens hole is provided at the position of the shell 1 corresponding to the optical adapter port 11, and the lens is placed in the lens hole and fixed by gluing or welding; an optical window is welded inside the optical adapter port 11, and light can pass through with low loss, but water vapor and the like cannot pass through; insulator pins 6 with glass insulators are also provided in the first detection component accommodating cavity 12 and the second detection component accommodating cavity 13, and an electrical connection is made with the outside world through the insulator pins 6 with glass insulators; a partition is provided on the shell 1 to isolate each transmitting end from each receiving end to prevent optical and electrical crosstalk between the transmitting end and the receiving end; a light port 17 is provided on the partition, and the filter is directly bonded to the fixing surface corresponding to the light port 17 for precise positioning.

[0081] It should be noted here that each filter in the present embodiment is arranged on the corresponding cavity wall. In order to realize the corresponding optical path coupling, thereby realizing the demultiplexing of the detection light and the combination of the emission light, the corresponding filter needs to be placed at an angle that matches the optical path of each detection component and the optical path of the laser component. In order to achieve this match, there is no need to re-design the optical path coupling when actually installing the device. The structure of each cavity wall in the present embodiment is obtained based on the optical path design, so that when each filter is pasted at the corresponding cavity wall position, the mutual coupling of the optical paths can be realized, thereby facilitating installation.

[0082] In an optional embodiment, a PEI lens 4 is provided so that each detection component can be installed in a manner that the optical path is perpendicular to the base of the shell 1, such as directly bonding the detection component to the base of the shell 1, thereby eliminating the need to re-couple the optical path, and the setting position of the PEI lens 4 is limited by a mounting plate, thereby achieving optical path coupling through the PEI lens 4, so that when the packaging component is used to package components, it is only necessary to bond or place the corresponding components at the corresponding positions, and there is no need to consider the optical path coupling problem throughout the process, thereby ensuring a highly integrated layout while also ensuring the convenience of installation of each component.

[0083] Embodiment 2:

[0084] This embodiment also provides a Combo PON OLT packaging component. In Example 1, in order to achieve the coupling of the optical paths of each filter, the light path of the first detection component accommodating cavity 12 needs to be in an inclined state, that is, it cannot be kept horizontal or vertical with the optical axis of the optical adapter port 11. Under this implementation, the orientation setting requirements for each insulator pin 6 in the first detection component accommodating cavity 12 and the mounting plate for mounting the PEI lens 4 are more stringent, and 5 filters are required to achieve the splitting of each detection light. Compared with the packaging component described in Example 1, this embodiment can maintain the light path of the first detection component accommodating cavity 12 parallel to the optical axis of the optical adapter port 11, thereby facilitating the internal design of the first detection component accommodating cavity 12. However, in contrast, in order to enable each filter to be directly set on the corresponding cavity wall, this embodiment uses two adjustment cavities 16 and four filters to achieve the splitting of each detection light. The number of filters used is less, but the cavity structure is more complex.

[0085] like Fig.13 As shown, the packaging component includes a shell 1 and a shell cover 2; the side wall of the shell 1 is provided with an optical adapter port 11 for setting the optical adapter component; at two corner positions of the shell 1 close to the optical adapter port 11, a first detection component accommodating cavity 12 and a second detection component accommodating cavity 13 are respectively provided, which are respectively used to accommodate the first detection component and the second detection component; at a corner position of the shell 1 away from the optical adapter port 11, a third detection component accommodating cavity 14 is provided for accommodating the third detection component; at another corner position of the shell 1 away from the optical adapter port 11, a laser component accommodating cavity 15 is provided for accommodating each laser component; a first adjustment cavity 160 is also provided between the first detection component accommodating cavity 12 and the third detection component accommodating cavity 14, and a second adjustment cavity 161 is also provided between the first detection component accommodating cavity 12, the second detection component accommodating cavity 13 and the laser component accommodating cavity 15. The first detection component accommodating cavity 12, the second detection component accommodating cavity 13, the third detection component accommodating cavity 14, the laser component accommodating cavity 15, the first adjustment cavity 160 and the second adjustment cavity 161 are separated by corresponding partitions, and a light-through port 17 is provided on the partition for optically connecting the corresponding accommodating cavity with the corresponding adjustment cavity 16 or optically connecting the first adjustment cavity 160 with the second adjustment cavity 161; the second adjustment cavity 161 is used to allow the emission light emitted from the laser component accommodating cavity 15 to be emitted from the optical adapter port 11, and to demultiplex each detection light, so that the second detection light is transmitted to the second detection component accommodating cavity 13, and the first detection light and the third detection light are transmitted to the first adjustment cavity 160; the first adjustment cavity 160 is used to demultiplex the first detection light and the third detection light, so that the first detection light is transmitted to the first detection component accommodating cavity 12, and the third detection light is transmitted to the third detection component accommodating cavity 14.

[0086] Among them, according to Fig.14 The light opening 17 used for connecting the first detection component accommodating cavity 12 and the first adjusting cavity 160 is used as the first light opening 170, the light opening 17 used for connecting the second detection component accommodating cavity 13 and the second adjusting cavity 161 is used as the second light opening 171, the light opening 17 used for connecting the third detection component accommodating cavity 14 and the first adjusting cavity 160 is used as the third light opening 172, the light opening 17 used for connecting the laser component accommodating cavity 15 and the second adjusting cavity 161 is used as the fourth light opening 173, and the light opening 17 used for connecting the first adjusting cavity 160 and the second adjusting cavity 161 is used as the fifth light opening 174.

[0087] A first filter 180 is arranged in the first adjustment cavity 160, and the first filter 180 is arranged at the positions of the first light opening 170 and the fifth light opening 174. Filters are arranged at the positions of the second light opening 171 and the fourth light opening 173, which are the second filter 181 and the fourth filter 183 respectively. A third filter 182 is arranged at the cavity wall position of the first adjustment cavity 160 opposite to the third light opening 172. The fourth filter 183 is arranged on the optical axis of the optical adapter port 11, and is used to allow the emission light emitted from the laser component accommodating cavity 15 to be emitted from the optical adapter port 11, and reflect each detection light to the second filter 181. The second filter The plate 181 is used to transmit the second detection light so that the second detection light reaches the second detection component accommodating cavity 13, and reflects the first detection light and the third detection light so that the first detection light and the third detection light reach the first filter 180 in the first adjustment cavity 160 through the fifth light opening 174. The first filter 180 is used to transmit the third detection light so that the third detection light reaches the third filter 182, and reflects the first detection light so that the first detection light reaches the first detection component accommodating cavity 12 through the first light opening 170; the third filter 182 is used to reflect the third detection light so that the third detection light reaches the third detection component accommodating cavity 14 through the third light opening 172. Thus, the split-wave reception of each detection light is realized through the first adjustment cavity 160 and the second adjustment cavity 161. Among them, the structure of the laser component accommodating cavity 15 in Example 1 is also applicable to this embodiment, and will not be repeated here.

[0088] It should be noted here that since this embodiment and the subsequent embodiments 3 and 4 are different design schemes based on the same concept as embodiment 1, the designs of the accommodating cavity, the light passing port and the filter are different from those of embodiment 1. However, for the sake of simplicity of description, the same numbers of the corresponding structures in embodiment 1 are used for description, rather than referring to the same structures as in embodiment 1.

[0089] Embodiment 3:

[0090] This embodiment also provides a Combo PON OLT packaging component, which includes a housing 1 and a housing cover 2; Fig.15 As shown, the side wall of the shell 1 is provided with an optical adapter port 11 for setting an optical adapter component; it should be noted that in this embodiment and the subsequent embodiment 4, in order to show the optical path relationship between the components, the cavity wall of each cavity is schematically presented using dotted lines, and the dotted lines represent the approximate separation position between the cavities, and do not represent the actual cavity wall structure. The actual wall structure is designed and analyzed by technical personnel in this field based on the placement angle of each filter.

[0091] A first detection component accommodating cavity 12 and a second detection component accommodating cavity 13 are respectively provided at two corner positions of the shell 1 close to the optical adapter port 11, for accommodating the first detection component and the second detection component respectively; a third detection component accommodating cavity 14 is provided at a corner position of the shell 1 away from the optical adapter port 11, for accommodating the third detection component; a laser component accommodating cavity 15 is provided at another corner position of the shell 1 away from the optical adapter port 11, for accommodating each laser component; a first adjusting cavity 160 is also provided between the first detection component accommodating cavity 12 and the third detection component accommodating cavity 14, and a second adjusting cavity 161 is also provided between the first detection component accommodating cavity 12, the second detection component accommodating cavity 13 and the laser component accommodating cavity 15; The component accommodating cavity 13, the third detection component accommodating cavity 14, the laser component accommodating cavity 15, the first adjustment cavity 160 and the second adjustment cavity 161 are separated by corresponding partitions, and a light-through port 17 is provided on the partition for connecting the optical path of the corresponding accommodating cavity with the corresponding adjustment cavity 16 or connecting the optical path of the first adjustment cavity 160 with the second adjustment cavity 161; the second adjustment cavity 161 is used to allow the emission light emitted from the laser component accommodating cavity 15 to be emitted from the optical adapter port 11, and to demultiplex each detection light, so that the first detection light is transmitted to the first detection component accommodating cavity 12, the second detection light is transmitted to the second detection component accommodating cavity 13, and the third detection light is transmitted to the first adjustment cavity 160; the first adjustment cavity 160 is used to adjust the transmission optical path of the third detection light, so that the third detection light is transmitted to the third detection component accommodating cavity 14.

[0092] Among them, according to Fig.16The light opening 17 used for connecting the first detection component accommodating cavity 12 and the second adjusting cavity 161 is used as the first light opening 170, the light opening 17 used for connecting the second detection component accommodating cavity 13 and the second adjusting cavity 161 is used as the second light opening 171, the light opening 17 used for connecting the third detection component accommodating cavity 14 and the first adjusting cavity 160 is used as the third light opening 172, the light opening 17 used for connecting the laser component accommodating cavity 15 and the second adjusting cavity 161 is used as the fourth light opening 173, and the light opening 17 used for connecting the first adjusting cavity 160 and the second adjusting cavity 161 is used as the fifth light opening 174. A first optical filter 180 is disposed at a cavity wall position of the second adjusting cavity 161 opposite to the first light opening 170, a second optical filter 181 and a fourth optical filter 183 are respectively disposed at the second light opening 171 and the fourth light opening 173 of the second adjusting cavity 161, a third optical filter 182 is disposed at a cavity wall position of the first adjusting cavity 160 opposite to the third light opening 172, and a fifth optical filter 184 is disposed at a position of the fifth light opening 174 in the second adjusting cavity 161.

[0093] The fourth optical filter 183 is arranged on the optical axis of the optical adapter port 11, and is used to allow the emission light emitted from the laser component accommodating cavity 15 to be emitted from the optical adapter port 11, and reflect each detection light to the second optical filter 181, the second optical filter 181 is used to transmit the second detection light, so that the second detection light reaches the second detection component accommodating cavity 13, and reflects the first detection light and the third detection light to the fifth optical filter 184, the fifth optical filter 184 is used to transmit the third detection light, so that the third detection light reaches the third optical filter 182 of the first adjustment cavity 160, and reflects the first detection light to the first optical filter 180, the third optical filter 182 is used to reflect the third detection light, so that the third detection light passes through the third light opening 172 to reach the third detection component accommodating cavity 14, the first optical filter 180 is used to reflect the first detection light, so that the first detection light passes through the first light opening 170 to reach the first detection component accommodating cavity 12, thereby realizing the split-wave reception of each detection light through the first adjustment cavity 160 and the second adjustment cavity 161. The structure of the laser component accommodating cavity 15 in Embodiment 1 is also applicable to this embodiment and will not be elaborated here.

[0094] In the packaging components provided in Examples 1 and 2, each filter can be implemented using an 8° filter. In the present embodiment, a 13° filter is used to implement the fifth filter 184 to satisfy the reflection of light incident at a large angle, such as reflecting a 1310nm wavelength and transmitting a 1286nm wavelength. However, due to the large incident angle, the edge wavelength of 1310 can only cover 1310±10nm, and cannot fully cover the GPON 1310±20nm requirement. Compared with Examples 1 and 2, the advantage of the present embodiment is that for devices with a smaller wavelength coverage range, the 13° filter has a larger device size requirement, and has a better reflection number for the 1270nm and 1310nm channels, which facilitates process control.

[0095] Embodiment 4:

[0096] This embodiment also provides a Combo PON OLT packaging component, which includes a housing 1 and a housing cover 2; Fig.17 As shown, the side wall of the shell 1 is provided with an optical adapter port 11 for setting the optical adapter component; at two corners of the shell 1 close to the optical adapter port 11, a first detection component accommodating cavity 12 and a third detection component accommodating cavity 14 are respectively provided, which are used to accommodate the first detection component and the third detection component respectively; at a side position of the shell 1 away from the optical adapter port 11, a laser component accommodating cavity 15 is provided for accommodating each laser component; a second detection component accommodating cavity 13 is provided between the laser component accommodating cavity 15 and the first detection component accommodating cavity 12, which is used to accommodate the second detection component; An adjustment cavity 16 is also provided between the component accommodating cavity 14 and the laser component accommodating cavity 15; the first detection component accommodating cavity 12, the second detection component accommodating cavity 13, the third detection component accommodating cavity 14, the laser component accommodating cavity 15 and the adjustment cavity 16 are separated by corresponding partitions, and a light-through port 17 is provided on the partition for connecting the optical path of the corresponding accommodating cavity with the adjustment cavity 16; the adjustment cavity 16 is used to allow the emission light emitted from the laser component accommodating cavity 15 to be emitted from the optical adapter port 11, and to demultiplex each detection light, and to adjust the optical path of each detection light incident from the optical adapter port 11, so that the corresponding detection light reaches the corresponding detection component accommodating cavity through the corresponding light-through port 17.

[0097] Among them, according to Fig.18The light opening 17 used to connect the first detection component accommodating cavity 12 and the adjusting cavity 16 is used as the first light opening 170, the light opening 17 used to connect the second detection component accommodating cavity 13 and the adjusting cavity 16 is used as the second light opening 171, the light opening 17 used to connect the third detection component accommodating cavity 14 and the adjusting cavity 16 is used as the third light opening 172, and the light opening 17 used to connect the laser component accommodating cavity 15 and the adjusting cavity 16 is used as the fourth light opening 173. The second filter 181, the third filter 182 and the first filter 180 are respectively arranged on the cavity wall of the adjusting cavity 16 at the positions of the second light opening 171, the third light opening 172 and the fourth light opening 173. The first optical filter 180 is arranged on the optical axis of the optical adapter port 11, and is used to allow the emission light emitted from the laser component accommodating cavity 15 to be emitted from the optical adapter port 11, and reflect each detection light to the third optical filter 182, and the third optical filter 182 is used to transmit the third detection light, so that the third detection light reaches the third detection component accommodating cavity 14, and reflect the first detection light and the second detection light to the second optical filter 181, and the second optical filter 181 is used to transmit the second detection light, so that the second detection light reaches the second detection component accommodating cavity 13, and reflect the first detection light, so that the first detection light reaches the first detection component accommodating cavity 12 through the first light port 170. Among them, the structure of the laser component accommodating cavity 15 in Example 1 is also applicable to this embodiment, and will not be repeated here.

[0098] This embodiment also provides another optional structure of the laser component accommodating cavity 15, such as Fig.18 As shown, a fourth filter 183 is arranged on the cavity wall of the laser component accommodating cavity 15 and at the position of the fourth light opening 173, a fifth filter 184 is arranged on the cavity wall of the laser component accommodating cavity 15 and at a position relative to the second laser component 55, and a sixth filter 185 is arranged at the intersection of the optical paths of the third laser component 56 and the second laser component 55. The sixth filter 185 is used to transmit the second emission light and reflect the third emission light, so that the second emission light and the third emission light are combined and transmitted to the fifth filter 184, the fifth filter 184 is used to reflect the second emission light and the third emission light, so that the second emission light and the third emission light reach the fourth filter 183, and the fourth filter 183 is used to transmit the first emission light and reflect the second emission light and the third emission light, so that the first emission light, the second emission light and the third emission light are combined and transmitted from the fourth light opening 173 to the adjustment cavity 16. A dual-path optical isolator is further provided between the fourth optical filter 183, the fifth optical filter 184 and the first laser assembly 54, the second laser assembly 55 to optically isolate the first emission light, the second emission light and the third emission light.

[0099] This embodiment uses a 13° filter to implement the second filter 181 or the third filter 182, but due to the large angle, it is also unable to fully cover the GPON1310±20nm requirement, and in this implementation, each detection component uses a coaxial glass insulator pin 6 to connect to the outside, and its radio frequency performance is worse than that of the third detection component in Example 1-Example 3 using a ceramic pin to connect to the outside, and in this embodiment, four filters are used in the laser component accommodating cavity 15, which is one more than in Example 1-Example 3, resulting in increased costs, and in this embodiment, the relative distance between each detection component is closer than in Example 1-Example 3, resulting in a poorer crosstalk isolation effect than in Example 1-Example 3. However, most of the optical paths in this embodiment are parallel to or perpendicular to the optical axis, which to a certain extent provides convenience for the coupling performance test of the optical path.

[0100] Embodiment 5:

[0101] At present, there is no mature 6-way Combo PON OLT design in the industry. If the 4-way coaxial packaging is used, there are the following disadvantages:

[0102] (1) Low coupling efficiency: In the TO packaging method, the TO cap lens and TO are integrated into one package, and active coupling cannot be performed. Therefore, the coupling efficiency is limited and it is impossible to achieve a coupling efficiency of 75% or even higher. The power budget for the entire PON module is required to be at least 29dBm, or even 32dBm, and the optical power of the transmitter is required to be at least greater than 5dBm. For the channel with SOA, it needs to reach 8.2dBm. In order to improve the coupling efficiency, the efficiency of the TO cap cannot meet the demand.

[0103] (2) The overall size cannot be made shorter or smaller: TO packaging is restricted by the material size, and the overall OSA size is limited. In particular, it is almost impossible to package a 6-way device into an SFP+ module using coaxial packaging.

[0104] (3) Poor heat dissipation performance and high power consumption. For 6-way devices, since both 1577nm and 1342nm lasers are narrow-band wavelength adjustable, they need TEC control. If coaxial packaging is used, two separate TECs are required to control the temperature of the lasers, which not only increases the power consumption of the device, but also greatly reduces the space for module PCB wiring. In addition, since coaxial TECs are mostly vertical structures, TECs are not in direct contact with the TO base, but dissipate heat through the outer diameter of the TO, which greatly reduces the effect.

[0105] (4) There is large electrical and optical crosstalk: In the existing BOX packaging structure that simultaneously encapsulates the transmitter and the receiver, the signal from the transmitter can easily affect the receiver, causing large electrical and optical crosstalk.

[0106] (6) Limited RF performance: The current OSA design of Combo PON OLT is composed of four TO sockets and some other structural parts. Its maximum rate is only 10 Gb / s. For devices with a rate of 50 Gb / s, its bandwidth generally needs to meet the requirement of 35 GHz. In particular, multi-directional devices with coaxial packages have large RF losses because the routing is not the shortest and optimal path.

[0107] In order to solve the above problems, this embodiment, based on Embodiment 1 to Embodiment 4, further provides a Combo PON OLT optical device, such as Fig.19 As shown, the optical device includes the Combo PONOLT package assembly described in any one of embodiments 1-4 and the first detection assembly 51, the second detection assembly 52, the third detection assembly 53, the first laser assembly 54, the second laser assembly 55, the third laser assembly 56 and the optical adapter 57 encapsulated in the Combo PON OLT package assembly. The setting position of each detection assembly and laser assembly is determined based on the structure of the package assembly. The first detection assembly 51, the second detection assembly 52, and the third detection assembly 53 can be optical detectors in form, and the first laser assembly 54, the second laser assembly 55 and the third laser assembly 56 can be lasers in form.

[0108] There is also a preferred implementation: the first laser assembly 54 and the second laser assembly 55 share the same TEC assembly. With the support of the Combo PON OLT packaging assembly, the first laser assembly 54 and the second laser assembly 55 can be arranged side by side, so that the optical axes of the two are off-axis, and because the two are arranged in the same accommodation chamber, the two can share the same TEC assembly, thereby providing a good heat dissipation effect for the first laser assembly 54 and the second laser assembly 55 while reducing the cost and overall power consumption.

[0109] In an optional embodiment, the wavelengths of the emitted lights of the optical devices are 1342nm, 1490nm and 1577nm respectively, such as the emission wavelength of the first laser assembly 54 is 1342nm, the emission wavelength of the second laser assembly 55 is 1577nm, and the emission wavelength of the third laser assembly 56 is 1490nm. The detection wavelength of the first detection assembly 51 is 1310nm, the detection wavelength of the second detection assembly 52 is 1270nm, and the detection wavelength of the third detection assembly 53 is 1286nm.

[0110] Taking the packaging components described in Example 1 for packaging of each detection component and each laser component as an example, three signal lights of different wavelengths are received from the optical port, among which the light of the 1286nm channel is reflected by the second filter 181 and the fourth filter 183 in sequence and reaches the third filter 182, is transmitted by the third filter 182, and is received by the third detection component 53. The light of the 1270nm channel is reflected by the second filter 181, the fourth filter 183, the third filter 182, and the fifth filter 184 in sequence and reaches the first filter 180, is transmitted by the first filter 180, and is received by the second detection component 52. The light of the 1310nm channel is reflected by the second filter 181, the fourth filter 183, the third filter 182, the fifth filter 184, and the first filter 180, and is received by the first detection component 51.

[0111] The wavelength 1342nm emitted by the first laser component 54 is directly output from the optical port after being transmitted through the sixth filter 185 and the second filter 181; the wavelength 1577nm emitted by the second laser component 55 is reflected by the seventh filter 186 and the sixth filter 185 in sequence, then transmitted through the second filter 181, and finally output from the optical port.

[0112] The wavelength emitted by the third laser assembly 56 is transmitted through the seventh filter 186, then reflected by the sixth filter 185, and finally transmitted through the second filter 181 before being output from the optical port.

[0113] In this embodiment, if Figure 4 As shown, the laser assembly includes an LD (Laser Diode, semiconductor laser) laser and a lens. The first laser assembly 54 includes a first laser and a first lens, the second laser assembly 55 includes a second laser and a second lens 221, and the third laser 230 and a third lens 231 are used as examples for explanation. Among them, the TX part includes a first laser, a second laser and a third laser. The first laser is a DFB structure, the second laser is an EML with SOA structure, and the third laser is an EML structure. Furthermore, the center wavelengths of the first laser, the second laser and the third laser are different, and the center wavelengths of the three lasers are all one of 1490nm, 1342 and 1577nm. The center wavelength of the laser determines the transmission wavelength range and reflection wavelength range of the second filter 181 in the optical path, and corresponding adjustments are made according to the center wavelengths of the three lasers. Fig.10In the optical path structure diagram shown, the central wavelength of the first laser is 1490nm, the central wavelength of the second laser is 1342nm, and the central wavelength of the third laser is 1577nm. The light emitted by the first laser, the second laser, and the light emitted by the third laser are shaped into approximately parallel light after passing through the first lens, the second lens, and the third lens, respectively. The two beams of parallel light emitted by the second lens and the third lens are combined after passing through the seventh filter 186 to form a beam of parallel light. After passing through the optical isolator and the sixth filter 185, the combined parallel light is combined with the parallel light emitted from the first lens and passed through the collimating lens after passing through the sixth filter 185, and finally transmitted through the second filter 181 together, and then shaped by the third lens, the parallel light is transformed into convergent light, coupled to the optical fiber in the optical fiber ferrule in the optical adapter 57 for output.

[0114] In the embodiment of the present invention, a BOX structure is adopted, the cap design of the TO package is omitted, and the 3-way transmitting optical path port and the 3-way receiving optical path port are concentrated inside a shell, so that the overall OSA size structure is compact and smaller, leaving sufficient space for the module PCB, and the laser component and the detection component are arranged in different partitions, and the different partitions are separated by partitions to prevent the optical signal that does not belong to the partition from entering, and to shorten the common path of the optical signal as much as possible, so as to achieve the purpose of reducing the mutual crosstalk between the optical signals; at the same time, the laser component and the detection component are arranged in different partitions, and the corresponding metal wiring is also separated as much as possible to reduce electrical crosstalk. At the same time, at a high speed of 50G, the high-frequency performance of the BOX package ceramic wiring will be better than the TO package glass insulator wiring, and the present invention is compatible with the glass insulator pin wiring of the low-speed channel from the perspective of cost and performance, and also considers the ceramic wiring method from 50G and higher speeds in the future, and combines the two to be applied to the implementation of the invention. Finally, from the perspective of heat dissipation, the large contact area of ​​the BOX package is also more advantageous than the TO package, which is conducive to improving the overall performance of the device.

[0115] In this embodiment, each detection component can be an avalanche photodiode APD (Avalanche PhotonDiode), and the first detection component 51 is an avalanche photodiode APD1, the second detection component 52 is an avalanche photodiode APD2, and the third detection component is an avalanche photodiode APD3. The RX part includes a light receiving component consisting of two avalanche photodiodes APD1 (first detection component 51), avalanche photodiode APD2 (second detection component 52), and avalanche photodiode APD3 (third detection component 53). Avalanche photodiode APD1, avalanche photodiode APD2, and avalanche photodiode APD3 receive light with wavelengths of 1310nm, 1270nm, and 1286nm, respectively. Fig.10In the optical path schematic diagram shown, the first detection component 51 receives 1310nm light, the second detection component 52 receives 1270nm light and the third detection component 53 receives 1286nm light. When it is necessary to change the first detection component 51, the second detection component 52 and the third detection component 53 to receive light of different wavelengths, it is only necessary to change the transmission wavelength range and reflection wavelength range requirements of the first filter 180, the second filter 181, the third filter 182, the fourth filter 183 and the fifth filter 184. The three-way combined light beams with wavelengths of 1270nm, 1286nm and 1310nm are incident from the optical fiber in the optical fiber ferrule, and are shaped by the lens, and the divergent light is transformed into parallel light. The three-way combined parallel light beams are reflected by the second filter 181 and reach the fourth filter 183. The fourth filter 183 reflects the combined parallel light beams to the third filter 182. The third filter 182 transmits the light with a wavelength of 1286nm and is received by APD3, and reflects the light beams with wavelengths of 1270nm and 1310nm to the fifth filter 184. The fifth filter 184 reflects the light beams with wavelengths of 1270nm and 1310nm to the first filter 180, wherein the light with a wavelength of 1270nm is transmitted by the first filter 180 and is received by APD2. The light with a wavelength of 1310nm is reflected to the first detection component accommodating cavity 12 and is received by APD1.

[0116] Among them, the first filter 180, the second filter 181, the third filter 182, the fourth filter 183, the fifth filter 184, the sixth filter 185 and the seventh filter 186 are all TFF (Thin Film Filter), which is an optical element that uses a coating method to split light. Figure 5In the optical path schematic diagram shown, the central wavelength of the first laser 210 is 1490nm, the central wavelength of the second laser 220 is 1342nm, the central wavelength of the third laser 330 is 1577nm, the first detection component 51 receives the light of 1310nm, the second detection component 52 receives the light of 1270nm and the third detection component 53 receives the light of 1310nm. The transmission wavelength range and reflection wavelength range of the first filter 180, the second filter 181, the third filter 182, the fourth filter 183, the fifth filter 184, the sixth filter 185 and the seventh filter 186 are as follows: The first filter 180: transmits all the central wavelengths of 1577nm, 1490nm and 1342nm. , fully reflects the central wavelengths of 1270nm, 1286nm, and 1310nm; the second filter 181: fully reflects the central wavelengths of 1270nm, 1286nm, and 1310nm; the third filter 182: transmits the central wavelength of 1286nm, and fully reflects the central wavelengths of 1310nm and 1270nm; the fourth filter 183: fully reflects the central wavelengths of 1286nm and 1310nm; the fifth filter 184: transmits the central wavelength of 1270nm, and reflects the central wavelength of 1310nm; the sixth filter 185 transmits the central wavelengths of 1577nm, 1490nm, and 1342nm; the seventh filter 186 transmits the central wavelength of 1490nm, and reflects the central wavelength of 1577nm.

[0117] In an optional embodiment, the laser assembly specifically includes a 1577nm EML optical chip, an aluminum nitride heat sink, a TEC refrigerator, a backlight monitoring MPD and a lens (lens). The functions of each component are as follows: the 1577nm EML optical chip emits light with a modulatable wavelength of 1577nm; the aluminum nitride heat sink is used to conduct heat to the 1577 laser, and is also used to set a circuit on the aluminum nitride heat sink to achieve circuit connection; in order to better improve the high-frequency performance of the transition block and improve the heat dissipation characteristics, a number of through holes with a diameter of 0.1 are distributed on the transition block substrate, and tungsten is filled in the holes. Furthermore, in order to increase ground reflux, the side of the transition block is gold-plated. At the same time, in order to reduce power consumption, capacitors are placed on the transition block to play the role of passing AC and isolating DC. The capacitor can be a chip capacitor or a wire bonding capacitor. The TEC cooler is used to control the temperature of the 1577nm laser component and the 1342nm laser component at the same time; the backlight monitoring MPD is used to monitor the light output size of the 1577 laser; the lens material can be silicon or optical glass, and its function is to compress the divergence angle and collimate the light spot.

[0118] The 1342nm laser assembly specifically includes a 1342nm EML optical chip with SOA, an aluminum nitride heat sink, a backlight monitoring MPD and a lens (first lens 221). The functions of each component are as follows: the 1490nm DFB optical chip emits light with a wavelength of 1490nm; the aluminum nitride heat sink is used to conduct heat to the 1490 laser, and a circuit is set on the surface of the aluminum nitride heat sink to achieve circuit connection; the backlight monitoring MPD is used to monitor the light output size of the 1490 laser; the lens material can be silicon or optical glass, and its function is to convert the light emitted by the 1490 laser into collimated light and then enter the subsequent optical path.

[0119] The 1270nm receiving component includes an APD chip, a TIA chip, several capacitors, a PEI lens and a filter. The characteristics and functions of each component: the APD chip is used to receive light and convert the optical signal into an electrical signal; the TIA chip is used to amplify the electrical signal with a certain intensity and low noise; the capacitor is used for power supply filtering; the filter is a filter that only transmits 1270nm light when the light is incident at 0°, and reflects other light; the PEI lens 4, such as Figure 8 As shown, the material is PEI, which is characterized by including three optical surfaces, the first optical surface 41 is a plane perpendicular to the direction of the incident light, the second optical surface 42 is a plane at an angle of 45°, and the third optical surface 43 is a plane with an aspheric lens. The first optical surface 41 is used as a carrier, and a filter is bonded to the plane. The light is vertically incident, passes through the filter and the first optical surface in sequence, and then passes through the second optical surface 42 at an angle of 45° to generate full reflection. The light turns 90° and is incident on the third optical surface 43 with an aspheric lens. After being shaped by the aspheric lens, the parallel light is focused onto the photosensitive surface of the APD.

[0120] The 1310nm receiving component includes an APD chip, a TIA chip, several capacitors, a PEI lens and a filter. The characteristics and functions of each component: the APD chip is used to receive light and convert the optical signal into an electrical signal; the TIA chip is used to amplify the electrical signal with a certain intensity and low noise; the capacitor is used for power supply filtering; the filter is a filter that only transmits 1310nm light when the light is incident at 0°, and reflects other light; the PEI lens 4, such as Figure 8 As shown, the material is PEI, which is characterized by including three optical surfaces, the first optical surface 41 is a plane perpendicular to the direction of the incident light, the second optical surface 42 is a plane at an angle of 45°, and the third optical surface 43 is a plane with an aspheric lens. The first optical surface 41 is used as a carrier, and a filter is bonded to the plane. The light is vertically incident, passes through the filter and the first optical surface 41 in sequence, and then passes through the second optical surface 42 at an angle of 45° to be fully reflected. The light turns 90° and is incident on the third optical surface 43 with an aspheric lens. After being shaped by the aspheric lens, the parallel light is focused onto the photosensitive surface of the APD.

[0121] The 1286nm receiving component includes an APD chip, a TIA chip, several capacitors, a PEI lens and a filter. The characteristics and functions of each component: the APD chip is used to receive light and convert the optical signal into an electrical signal; the TIA chip is used to amplify the electrical signal with a certain intensity and low noise; the capacitor is used for power supply filtering; the filter is a filter that only transmits 1286nm light when the light is incident at 0°, and reflects other light; the PEI lens 4, such as Fig.10 As shown, the material is PEI, which is characterized by including three optical surfaces, the first optical surface 41 is a plane perpendicular to the direction of the incident light, the second optical surface 42 is a plane at an angle of 45°, and the third optical surface 43 is a plane with an aspheric lens. The first optical surface 41 is used as a carrier, and a filter is bonded to the plane. The light is vertically incident, passes through the filter and the first optical surface 41 in sequence, and then passes through the second optical surface 42 at an angle of 45° to be fully reflected. The light turns 90° and is incident on the third optical surface 43 with an aspheric lens. After being shaped by the aspheric lens, the parallel light is focused onto the photosensitive surface of the APD.

[0122] In this embodiment, the laser assembly and the detection assembly are arranged in different partitions, and the different partitions are separated by partitions to prevent the optical signals that do not belong to the partition from entering, and to shorten the common path of the optical signal as much as possible, so as to achieve the purpose of reducing the mutual crosstalk between the optical signals; at the same time, the laser assembly and the detection assembly are arranged in different partitions, and the corresponding metal wiring is also separated as much as possible to reduce electrical crosstalk. Furthermore, a metal cavity is also arranged between the high-speed transmitting and receiving component porcelain parts to shield the signal to prevent the signal from having mutual crosstalk from the gold wire bonding area. And at the high-speed 50G rate, the high-frequency performance of the BOX package ceramic wiring will be better than the TO package glass insulator wiring, and this embodiment is compatible with the glass insulator pin wiring of the low-speed channel from the perspective of cost and performance, and also considers the ceramic wiring method from 50G and higher rates in the future, and combines the two in the implementation of the invention. Finally, from the perspective of heat dissipation, the large contact area of ​​the BOX package is more advantageous than the TO package, which is conducive to improving the overall performance of the device.

[0123] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A Combo PON OLT packaging component, characterized in that: It comprises a shell (1) and a shell cover (2); The side wall of the housing (1) is provided with an optical adapter port (11) for arranging an optical adapter component; A first detection component accommodating cavity (12) and a second detection component accommodating cavity (13) are respectively arranged at two corner positions of the housing (1) close to the optical adapter port (11), and are used to accommodate the first detection component and the second detection component respectively; a third detection component accommodating cavity (14) is arranged at a corner position of the housing (1) away from the optical adapter port (11), and is used to accommodate the third detection component; and a laser component accommodating cavity (15) is arranged at another corner position of the housing (1) away from the optical adapter port (11), and is used to accommodate each laser component; An adjustment cavity (16) is also provided between the first detection component accommodating cavity (12), the second detection component accommodating cavity (13), the third detection component accommodating cavity (14) and the laser component accommodating cavity (15); the first detection component accommodating cavity (12), the second detection component accommodating cavity (13), the third detection component accommodating cavity (14), the laser component accommodating cavity (15) and the adjustment cavity (16) are separated by corresponding partitions, and a light opening (17) is provided on the partition for conducting the optical path between the corresponding accommodating cavity and the adjustment cavity (16); The regulating cavity (16) is used to allow the emission light emitted from the laser component accommodating cavity (15) to be emitted from the optical adapter port (11), and to adjust the optical path of each detection light incident from the optical adapter port (11), so that the corresponding detection light reaches the corresponding detection component accommodating cavity through the corresponding light-through port (17).

2. The Combo PON OLT packaging component according to claim 1, characterized in that: The cavity wall of the adjustment cavity (16) is provided with a plurality of filters, and based on the different locations at which the filters are provided, the filters are divided into a first filter (180), a second filter (181), a third filter (182), a fourth filter (183) and a fifth filter (184); The first optical filter (180) is arranged at the position of the first light opening (170), the second optical filter (181) is arranged at the position of the second light opening (171), the third optical filter (182) is arranged at the position of the third light opening (172), and a fourth optical filter (183) and a fifth optical filter (184) are arranged at the positions opposite to the first optical filter (180), the second optical filter (181) and the third optical filter (182); wherein the first light opening (170) is a light opening for conducting the second detection component accommodating cavity (13) and the adjustment cavity (16), the second light opening (171) is a light opening for conducting the laser component accommodating cavity (15) and the adjustment cavity (16), and the third light opening (172) is a light opening for conducting the third detection component accommodating cavity (14) and the adjustment cavity (16); The second optical filter (181) is used to transmit each outgoing light from the laser component accommodating cavity (15) to the optical adapter port (11), and reflect each detection light incident from the optical adapter port (11) to the fourth optical filter (183); the fourth optical filter (183) is used to reflect each detection light to the third optical filter (182); the third optical filter (182) is used to transmit the third detection light among the detection lights to the third detection component accommodating cavity (14), and reflect the first detection light and the second detection light among the detection lights to the fifth optical filter (184); the fifth optical filter (184) is used to reflect the first detection light and the second detection light to the first optical filter (180); the first optical filter (180) is used to transmit the second detection light to the second detection component accommodating cavity (13), and reflect the first detection light to the fourth light through port (173), so that the first detection light is transmitted from the fourth light through port (173) to the first detection component accommodating cavity (12).

3. The Combo PON OLT packaging component according to claim 1, characterized in that: The laser component accommodating chamber (15) comprises a first accommodating chamber (150), a second accommodating chamber (151) and an adjusting chamber (152); The first accommodating chamber (150) is used to accommodate a first laser assembly and a second laser assembly, and the second accommodating chamber (151) is used to accommodate a third laser assembly. The first accommodating chamber (150), the second accommodating chamber (151) and the regulating chamber (152) are separated by corresponding partitions, and a light-through port (17) is provided on the partition to enable optical paths between the first accommodating chamber (150), the second accommodating chamber (151) and the regulating chamber (152) to be conducted in pairs; The adjustment chamber (152) is used to adjust the optical path of each emitted light so that the emitted light of each wavelength is combined and emitted from the light opening (17) of the laser component accommodating cavity (15).

4. The Combo PON OLT packaging component according to claim 3, characterized in that: A sixth filter (185) is arranged at the location of the fifth light passage (174), and a seventh filter (186) is arranged in the second receiving chamber (151); wherein the fifth light passage (174) is a light passage (17) for conducting light between the first receiving chamber (150) and the adjustment chamber (152); The seventh optical filter (186) is used to transmit the third emission light and reflect the second emission light, so that the second emission light and the third emission light are combined and transmitted to the sixth optical filter (185); the seventh optical filter (186) is used to transmit the first emission light and reflect the second emission light and the third emission light, so that each emission light is combined and transmitted from the corresponding light outlet (17) to the adjustment cavity (16).

5. The Combo PON OLT packaging component according to claim 3, characterized in that: A bayonet (19) and a movable bayonet plate (3) matching the bayonet (19) are also provided between the third detection component accommodating cavity (14) and the laser component accommodating cavity (15); The movable clamping plate (3) is used to be arranged at the position of the clamping port (19) to separate the third detection component accommodating chamber (14) and the laser component accommodating chamber (15).

6. The Combo PON OLT packaging component according to claim 5, characterized in that: The bayonet (19) comprises a first bayonet platform (190) and a second bayonet platform (191) arranged on the first bayonet platform (190), and concave platforms of different heights are arranged on both sides of the second bayonet platform (191); The movable card plate (3) comprises a common plate (31) and a first extension plate (32) and a second extension plate (33) extending from one end of the common plate (31); the common plate (31) is used to be arranged on the first card platform (190) to separate the third detection component accommodating cavity (14) and the laser component accommodating cavity (15); A gap is provided between the first extension plate (32) and the second extension plate (33) for clamping the second clamping platform (191); the first extension plate (32) and the second extension plate (33) of the movable clamping plate (3) are arranged to match the corresponding concave platform, so that the movable clamping plate (3) is fixed by the second clamping platform (191), the first extension plate (32) and the second extension plate (33).

7. The Combo PON OLT packaging component according to any one of claims 1 to 6, characterized in that: A PEI lens (4) is arranged in the first detection component accommodating cavity (12), the second detection component accommodating cavity (13) and the third detection component accommodating cavity (14); The PEI lens (4) comprises a first optical surface (41), a second optical surface (42) and a third optical surface (43); the second optical surface (42) is arranged at an angle of 45° to the first optical surface (41) and the third optical surface (43); The first optical surface (41) of the PEI lens (4) is arranged adjacent to the corresponding light opening (17), and the center of the third optical surface (43) of the PEI lens (4) is an aspherical lens for converging the corresponding detection light and transmitting the converged detection light to a detection component below the third optical surface (43).

8. A Combo PON OLT optical device, characterized in that: The invention comprises the Combo PON OLT packaging component as claimed in any one of claims 1 to 7, and a first detection component (51), a second detection component (52), a third detection component (53), a first laser component (54), a second laser component (55), a third laser component (56) and an optical adapter (57) packaged in the Combo PON OLT packaging component.

9. The Combo PON OLT optical device according to claim 8, characterized in that: The first laser assembly (54) and the second laser assembly (55) share the same TEC assembly.

10. The Combo PON OLT optical device according to claim 8, characterized in that: The wavelengths of the emitted lights of the optical device are 1342 nm, 1490 nm and 1577 nm respectively.

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