A Combo PON OLT packaging component and corresponding optical device

Abstract

The present application relates to the field of communication technology, and provides a Combo PON OLT packaging assembly and corresponding optical device. It includes first probe assembly accommodating cavity, second probe assembly accommodating cavity, third probe assembly accommodating cavity, laser assembly accommodating cavity and adjusting cavity respectively; each probe assembly accommodating cavity, laser assembly accommodating cavity and adjusting cavity are separated by a partition, and there is a light transmission port on the partition, which is used for connecting the corresponding accommodating cavity and adjusting cavity; the adjusting cavity is used for allowing the emitted light from the laser assembly accommodating cavity to emit from the light adaptation port, and allowing the probe light to pass through the light transmission port to the probe assembly accommodating cavity. The present application makes each component in a relatively independent space, thereby reducing mutual crosstalk, and enabling the probe light or emitted light of the probe assembly or laser assembly in each independent space to be combined or split in the adjusting cavity, thereby realizing the coupling of optical path while keeping each component space independent, and providing packaging basis for realizing 3-receiving and 3-emitting 6-way 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] A ComboPON (Passive Optical Network) OLT (Optical Line Terminal) has four ports: two transmit ports (with center wavelengths of 1577nm and 1490nm) and two receive ports (with center wavelengths of 1310nm and 1270nm). The existing solution uses a TFF (Thin Film Filter) optical splitter. These four ports are packaged in a TO package, with the TFF embedded between the bases. The four TOs and bases are coupled using laser welding or adhesive, resulting in a single optical port for both light transmission and reception. The two TX ports and two RX ports are located in different locations, making this a four-way device. The current OSA design for ComboPON OLTs consists of four TO sockets and other structural components. This requires a large number of components, a complex manufacturing process, and a relatively high cost. Moreover, the existing Combo PON OLT simultaneously encapsulates some BOX packaging structures of the transmitter and receiver. The signal of the transmitter can easily 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 this technical field. 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 transmitter and receiver. The signal of the transmitter easily affects the receiver, causing large electrical and optical crosstalk, and there is no 6-way OLT device.

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

[0006] In a first aspect, the present invention provides a Combo PON OLT packaging assembly, comprising 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 assembly accommodating cavity 12 and a second detection assembly accommodating cavity 13 are respectively provided at two corners of the housing 1 close to the optical adapter port 11, for accommodating the first detection assembly and the second detection assembly respectively; a third detection assembly accommodating cavity 14 is provided at a corner of the housing 1 away from the optical adapter port 11, for accommodating the third detection assembly; and a laser assembly accommodating cavity 15 is provided at another corner of the housing 1 away from the optical adapter port 11, for accommodating each laser assembly;

[0009] An adjustment cavity 16 is further 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;

[0010] 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 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 provided on the cavity wall of the adjustment cavity 16. 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 position of the first optical port 170, the second optical filter 181 is arranged at the position of the second optical port 171, and the third optical filter 182 is arranged at the position of the third optical port 172. A fourth filter 183 and a fifth filter 184 are arranged at 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 light through the second detection component accommodating cavity 13 and the adjustment cavity 16, the second optical port 171 is a light port for conducting light through the laser component accommodating cavity 15 and the adjustment cavity 16, and the third optical port 172 is a light port for conducting light through the third detection component accommodating cavity 14 and the adjustment cavity 16;

[0013] The second 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 filter 183. The fourth filter 183 is used to reflect each detection light to the third filter 182. The third 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 filter 184. The fifth filter 184 is used to reflect the first detection light and the second detection light to the first filter 180. The first 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 adjustment chamber 152;

[0015] The first storage chamber 150 is used to accommodate the first laser assembly and the second laser assembly, and the second storage chamber 151 is used to accommodate the third laser assembly. The first storage chamber 150, the second storage chamber 151 and the adjustment chamber 152 are separated by corresponding partitions, and the partitions are provided with light holes 17 for connecting the first storage chamber 150, the second storage chamber 151 and the adjustment chamber 152.

[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 passage 174, and a seventh filter 186 is provided 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;

[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 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 includes a first bayonet 190 and a second bayonet 191 disposed on the first bayonet 190 , and recesses of different heights are disposed on both sides of the second bayonet 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 set 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 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 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 package assembly described in the first aspect and a first detection assembly 51, a second detection assembly 52, a third detection assembly 53, a first laser assembly 54, a second laser assembly 55, a third laser assembly 56 and an optical adapter 57 encapsulated in the Combo PON OLT package assembly.

[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 application can separate the components by setting the accommodating cavities for accommodating the corresponding detection components or laser components, so that the components are located in relatively independent spaces, thereby reducing mutual crosstalk. Meanwhile, the present embodiment can make the detection light or the emission light of the detection components or laser components in the independent spaces combine or split in the adjusting cavity 16, so as to realize the coupling of the optical path while realizing the independence of the component spaces, thereby providing the packaging basis for realizing the 3-receiving 3-emitting 6-way OLT device. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

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

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

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

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

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

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

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

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

[0040] Figure 9 is a structural schematic diagram of an active card plate and a card hole in a Combo PON OLT packaging assembly provided by an embodiment of the present application;

[0041] Figure 10 is a structural schematic diagram of an active card plate in a Combo PON OLT packaging assembly provided by an embodiment of the present application;

[0042] Figure 11 is a force schematic diagram of an active card plate after installation in a Combo PON OLT packaging assembly provided by an embodiment of the present application;

[0043] Figure 12 is a structural schematic diagram of a PEI lens in a Combo PON OLT packaging assembly provided by an embodiment of the present application;

[0044] Figure 13 is a structural schematic diagram of a ninth Combo PON OLT packaging assembly provided by an embodiment of the present application;

[0045] Figure 14 is a structural schematic diagram of a tenth Combo PON OLT packaging assembly provided by an embodiment of the present application;

[0046] Figure 15 is a structural schematic diagram of an eleventh Combo PON OLT packaging assembly provided by an embodiment of the present application;

[0047] Figure 16 is a structural schematic diagram of a twelfth Combo PON OLT packaging assembly provided by an embodiment of the present application;

[0048] Figure 17 is a structural schematic diagram of a thirteenth Combo PON OLT packaging assembly provided by an embodiment of the present application;

[0049] Figure 18 is a structural schematic diagram of a fourteenth Combo PON OLT packaging assembly provided by an embodiment of the present application;

[0050] Figure 19 is a structural schematic diagram of a Combo PON OLT optical device provided by an embodiment of the present application.

[0051] In all the drawings, the same reference signs are used to represent the same elements or structures, wherein:

[0052] 1. Housing; 11. Optical adapter port; 12. First detection assembly accommodating chamber; 13. Second detection assembly accommodating chamber; 14. Third detection assembly accommodating chamber; 15. Laser assembly 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 optical filter; 181. Second optical filter; 182. Third optical filter; 183 , fourth filter; 184, fifth filter; 185, sixth filter; 186, seventh 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 solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to 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, terms such as "inner," "outer," "longitudinal," "lateral," "upper," "lower," "top," and "bottom" are used to indicate orientations or positional relationships based on those shown in the accompanying drawings. These terms are intended solely for ease of description and do not require the present invention to be constructed or operated in a specific orientation. Therefore, they should not be construed as limiting the present invention. Terms such as "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features defined as "first," "second," and the like may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, "plurality" means two or more. In the present application, unless otherwise specified or limited, the term "connected" should be understood broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediary. Furthermore, the term "coupled" can refer to a method of electrical connection for signal transmission. Furthermore, the technical features described below in the various embodiments of the present invention may be combined 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 transmitter and the receiver. The signal of the transmitter is easy to affect the receiver, causing large electrical and optical crosstalk. In addition, there is no 6-way OLT device. In order to solve this problem, the 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 internal structure of the housing 1, the housing cover 2 is only Figure 1 Although it is shown in the figure, it 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; 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; an adjustment cavity 16 is further 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 optically connecting the corresponding accommodating cavity with the adjustment cavity 16; wherein the adjustment cavity 16 is connected with the optical adapter port 11. Each accommodating cavity is optically connected with the adjustment cavity 16 through the corresponding light-through port 17, and the optical connection 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 port 17. It should be noted here that the said 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 analysis of the detection component and the laser component. In the corresponding accommodating cavity, there is also provided a connecting component for connecting the corresponding detection component or laser component to the outside world, such as Figure 2 As shown, a plurality of insulator pins 6 are disposed in the first detection component accommodating cavity 12 and the second detection component accommodating cavity 13. Glass insulators are disposed on the exterior of the insulator pins 6. The insulator pins 6 are electrically connected to the corresponding detection components. The definition of each insulator pin 6 corresponds to the pad of its corresponding detection component.

[0059] The third detection component accommodating cavity 14 and the laser component accommodating cavity 15 are provided with ceramic pins 7 on one side for forming electrical connection with the corresponding detection component or laser component, and the ceramic pins 7 are connected with gold fingers on the same side, which are used for connecting with the outside world to realize 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 of 50G, and the cost of the glass insulator pin is relatively low compared with the ceramic pin, in this embodiment, the first detection component, the second detection component and the third laser component of the low-speed channel are connected with the outside world by using the insulator pins 6, while the third detection component, the first laser component and the second laser component of the high-speed channel are connected with the outside world by using the ceramic pins 7, so that the combination of the ceramic pin and the glass insulator pin is realized in consideration of the cost and the performance of the whole optical device.

[0060] The first detection component is used for receiving first detection light, the second detection component is used for receiving second detection light, and the third detection component is used for receiving third detection light, as shown in Figure 19 The first laser component 54 is used for emitting first emission light, the second laser component 55 is used for emitting second emission light, and the third laser component 56 is used for emitting 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 1342 nm, 1490 nm and 1577 nm respectively, and the wavelengths of the first detection light, the second detection light and the third detection light are 1286 nm, 1270 nm and 1310 nm respectively. The first laser component 54, the second laser component 55 and the third laser component 56 form a light emitting component, and the first detection component, the second detection component and the third detection component form a light receiving component.

[0061] By arranging each detection assembly in a corner of the housing 1, the distance between the second detection assemblies can be maximized within a limited space, thereby reducing optical and electrical crosstalk. Furthermore, the laser assembly is positioned within the laser assembly accommodating cavity 15, thereby increasing the distance between the laser assemblies and the detection assemblies, reducing the crosstalk effect of optical detection on optical transmission. This embodiment adopts a BOX structure, eliminating the TO package header and cap, concentrating the three transmit optical ports and the three receive optical ports within a single housing 1. This makes the overall OSA compact and smaller, leaving ample space for the module PCB. By providing individual accommodating cavities for accommodating corresponding detection assemblies or laser assemblies, this embodiment isolates the components, placing them in relatively independent spaces and reducing crosstalk. Furthermore, this embodiment also provides an adjustment cavity 16, allowing the detection light or transmitted light from the detection assemblies or laser assemblies in each independent space to be combined and transmitted or split and received in the adjustment cavity 16. This achieves optical path coupling while maintaining the spatial independence of the components, providing a packaging foundation for a 6-way OLT device with 3 receive and 3 transmit.

[0062] In actual use, such as Figure 3 As shown, the cavity wall of the adjustment cavity 16 is provided with a plurality of filters. The cavity wall shape of the adjustment cavity 16 is obtained based on 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, 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 filter 180 is arranged at the first light opening 170, the second filter 181 is arranged at the second light opening 171, and the third filter 182 is arranged at the third light opening 172. A fourth filter 183 and a fifth filter 184 are arranged on the opposite sides of the first filter 180, the second filter 181 and the third filter 182; wherein, the first light opening 170 is a light opening 17 for connecting the second detection component accommodating cavity 13 and the adjustment cavity 16, the second light opening 171 is a light opening 17 for connecting the laser component accommodating cavity 15 and the adjustment cavity 16, and the third light opening 172 is a light opening 17 for connecting the third detection component accommodating cavity 14 and the adjustment cavity 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 filter 181 is used to transmit the light from the laser assembly accommodating cavity 15 to the light adapting port 11, and reflect the probe light from the light adapting port 11 to the fourth filter 183, which is used to reflect the probe light to the third filter 182, which is used to transmit the third probe light among the probe light to the third probe assembly accommodating cavity 14, and reflect the first probe light and the second probe light among the probe light to the fifth filter 184, which is used to reflect the first probe light and the second probe light to the first filter 180, which is used to transmit the second probe light to the second probe assembly accommodating cavity 13, and reflect the first probe light to the fourth light passing port 173, so that the first probe light is transmitted from the fourth light passing port 173 to the first probe assembly accommodating cavity 12.

[0064] As a preferred embodiment, the second light passing port 171 is arranged on the optical axis of the light adapting port 11, so that the emission light is directly transmitted to the light adapting port 11 after being transmitted through the second filter 181. 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 probe light, the second probe light and the third probe light as 1310nm, 1270nm and 1286nm respectively as an example, the transmission and reflection requirements of the filters are as follows: the second filter 181 reflects the wavelengths of 1310nm, 1270nm and 1286nm, and transmits the wavelengths of 1342nm, 1577nm and 1490nm; the fourth filter 183 and the fifth filter 184 reflect the wavelengths of 1310nm, 1270nm and 1286nm; the third filter 182 transmits the wavelength of 1286nm, and reflects the wavelengths of 1310nm and 1270nm; the first filter 180 transmits the wavelength of 1270nm, and reflects the wavelength of 1310nm.

[0065] Without considering the light path deviation caused by the light passing medium, the first filter 180 is arranged at the intersection position of the first light path and the second light path, and is arranged perpendicularly to the center line between the first light path and the second light path, wherein the first light path is the light path of the first probe assembly receiving the first probe light, and the second light path is the light path of the second probe assembly receiving the second probe light. As a preferred embodiment, the light path of the third probe assembly receiving the third probe light is parallel to the optical axis of the light adapting port 11, and the second filter 181 and the fourth filter 183 are parallel, so that the probe light is transmitted to the third probe assembly accommodating cavity 14 through the second filter 181 and the fourth filter 183, and is received by the third probe assembly.

[0066] In order to ensure that the detection light only enters the corresponding accommodating cavity, it is necessary to split and demultiplex different lights. In this embodiment, different filters are set at each light port 17 to split and demultiplex different lights. Among them, the filter can be set at the light port 17 by bonding, and the size of each filter matches the size of the light port 17 to ensure that after the filter is installed at the light port 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 with the cooperation of the shell cover 2, each cavity forms a complete independent space. In an optional embodiment, such as Figure 4 As shown, the laser assembly 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 assembly 54 and the second laser assembly 55, and the second accommodating chamber 151 is used to accommodate the third laser assembly 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 assembly accommodating chamber 15. The adjustment of the optical path of each emitted light can be achieved by providing a filter, such as Figure 5 As shown, specifically: a sixth filter 185 is provided at the position of the fifth light port 174, and a seventh filter 186 is provided in the second receiving chamber 151; wherein, the fifth light port 174 is a light port for conducting light between the first receiving chamber 150 and the adjustment chamber 152; the seventh filter 186 is provided at the relative position of the sixth light port 175 and the seventh light port 176, the sixth light port 175 is a light port for conducting light between the first receiving chamber 150 and the second receiving chamber 151, and the seventh light port 176 is a light port 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 1342 nm, 1577 nm, and 1490 nm, respectively, as an example, the transmission and reflection requirements of each filter in the laser assembly accommodating cavity 15 are as follows: the seventh filter 186 is used to reflect the wavelength of 1577 nm and transmit the wavelength of 1490 nm; the sixth filter 185 is used to reflect the wavelengths of 1577 nm and 1490 nm and transmit the wavelength of 1342 nm. 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 assembly and the second detection assembly are parallel to the optical axis of the optical adapter 11, the seventh filter 186 is parallel to the sixth filter 185, and the reflecting surfaces of the two are arranged opposite to each other, so that the second emitted light passes through the sixth optical port 175 in a direction parallel to the optical axis of the optical adapter 11 and reaches the seventh filter 186. Thereafter, it is reflected by the seventh filter through the seventh optical port 176 to the sixth filter, and then 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 further 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 position 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 provided 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 set 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 installable, the installation time can be freely selected. After the wiring of the corresponding components in the laser component accommodating chamber 15 and the third detection component accommodating chamber 14 is completed, the movable card plate 3 can be installed, thereby facilitating wiring. It should be noted here that Figure 8 It is only a schematic diagram to show the matching relationship between the bayonet 19 and the movable card plate 3. In actual use, if you use Figure 8 In the housing 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. Figure 9 For example, l1-L1 is the first preset value. When the movable clamp 3 is installed in the position of the clamp 19, it elastically contacts the two ends of the clamp 19, so that the movable clamp 3 does not shake or move, thereby ensuring the stability of the entire assembly. The first preset value is obtained by those skilled in the art based on the material analysis of the movable clamp 3 and the housing 1. Figure 9 It will 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 Figure 9 For example, l2-L2 is the second preset value. The second preset value is obtained by those skilled in the art based on the material analysis of the movable card plate 3 and the housing 1.

[0071] The concave platforms on both sides of the second clamping platform are configured as concave arcs, and correspondingly, the ends of the first extension plate 32 and the second extension plate 33 are configured as convex arcs that match the concave arcs. The concave platforms on both sides of the second clamping platform are respectively referred to as the first concave platform and the second concave platform. 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 degrees. Figure 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 bifurcation of the movable clamping plate 3 and the length between the end of the second extension plate 33 and the bifurcation 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. Figure 11 As shown, the movable clamping plate 3 is fixed by applying force in three directions, thereby stabilizing the internal packaging structure of the component and ensuring that the device does not shift 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, as shown in FIG. Figure 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. Figure 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 produce a slight displacement 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 the 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 Figure 19 As shown, there is also a preferred embodiment: 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; Figure 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] 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 a 45° angle, and the third optical surface 43 is a plane with an aspheric lens. The first optical surface 41 serves as a carrier, with a filter bonded to the plane. Light is incident vertically, passes through the filter and the first optical surface 41 in sequence, and then passes through the second optical surface 42 at a 45° angle, where it is fully reflected. The light then turns 90° and enters 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 plate and a second mounting plate are disposed in the first detection assembly accommodating cavity 12 and the second detection assembly accommodating cavity 13. The first PEI lens 4 is disposed on the first mounting plate, and the second PEI lens 4 is disposed on the second mounting plate. The first mounting plate is disposed near the fourth optical port 173, and the second mounting plate is disposed near the first optical port 170. Both the first mounting plate and the second mounting plate are higher than the plane of the insulator pin 6 to ensure that the corresponding detection assembly can be disposed below the third optical surface 43. The mounting plate includes at least one mounting groove, in which the PEI lens 4 is mounted to achieve 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] A first adapter is provided at the fifth optical port 174 for mounting and securing the first optical isolator, and a second adapter is provided at the seventh optical port 176 for mounting and securing the second optical isolator. Furthermore, the laser assembly and detection assembly are both located in relatively independent spaces, effectively reducing the impact of the transmitter's signal on the receiver, and vice versa. In this embodiment, a lens hole is also provided at the optical adapter 11 for securing a third lens, which is used to shape the light beam, converging collimated parallel light into the optical adapter 57 or shaping divergent light from the optical adapter 57 into collimated parallel light.

[0078] This embodiment improves the non-adjustable chip front-end lens in the TO packaging method to a free-space optical path in the BOX packaging method. For each wavelength channel, a coupled optical path composed of two lenses is used. The chip front-end lens is freely adjustable, and the theoretical coupling efficiency can reach over 85%. The entire OSA optical path of the Combo PON OLT is encapsulated inside the airtight BOX, effectively reducing the impact of moisture on the optical path structure and improving the reliability of the optical device. The solution of this embodiment simplifies the optical path of the OSA of the Combo PON OLT to a minimum, significantly reduces the number of process steps, and is lower in 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 are electrically connected to the outside world through the insulator pins 6 with glass insulators; a partition is provided on the shell 1 to isolate each transmitting end and 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 this embodiment is arranged on the corresponding cavity wall. In order to achieve corresponding optical path coupling, thereby realizing the demultiplexing of detection light and the combination of emission light, the corresponding filter needs to match the placement angle with the optical path of each detection component and the optical path of the laser component. In order to achieve this matching, there is no need to re-design the optical path coupling when actually installing the device. The structure of each cavity wall in this 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 such 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 for re-coupling 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 using the packaging component to package components, it is only necessary to bond or place the corresponding components in the corresponding positions, without having 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] Example 2:

[0084] This embodiment also provides a Combo PON OLT packaging assembly. In Example 1, to achieve coupling of the optical paths of the various filters, the optical path of the first detection assembly accommodating cavity 12 must be tilted, i.e., it cannot remain horizontal or perpendicular to the optical axis of the optical adapter port 11. In this implementation, stricter requirements are placed on the orientation of the insulator pins 6 in the first detection assembly accommodating cavity 12 and the mounting plate for mounting the PEI lens 4, and five filters are required to achieve the splitting of the various detection lights. Compared to the packaging assembly described in Example 1, this embodiment maintains the optical path of the first detection assembly accommodating cavity 12 parallel to the optical axis of the optical adapter port 11, thereby facilitating the internal design of the first detection assembly accommodating cavity 12. However, in contrast, to enable each filter to be directly mounted on the corresponding cavity wall, this embodiment uses two adjustment cavities 16 and four filters to achieve the splitting of the various detection lights. This reduces the number of filters used, but the cavity structure is more complex.

[0085] like Figure 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 used to accommodate the first detection component and the second detection component respectively; 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 further provided between the first detection component accommodating cavity 12 and the third detection component accommodating cavity 14, and a second adjustment cavity 161 is further 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 Figure 14 The division method is as follows: the light port 17 used to connect the first detection component accommodating cavity 12 and the first adjustment cavity 160 is used as the first light port 170, the light port 17 used to connect the second detection component accommodating cavity 13 and the second adjustment cavity 161 is used as the second light port 171, the light port 17 used to connect the third detection component accommodating cavity 14 and the first adjustment cavity 160 is used as the third light port 172, the light port 17 used to connect the laser component accommodating cavity 15 and the second adjustment cavity 161 is used as the fourth light port 173, and the light port 17 used to connect the first adjustment cavity 160 and the second adjustment cavity 161 is used as the fifth light port 174.

[0087] A first filter 180 is provided in the first adjustment cavity 160, and the first filter 180 is provided at the position of the first light opening 170 and the fifth light opening 174. Filters are provided at the positions of the second light opening 171 and the fourth light opening 173, respectively, which are the second filter 181 and the fourth filter 183. A third filter 182 is provided at the cavity wall position of the first adjustment cavity 160 opposite to the third light opening 172. The fourth filter 183 is provided 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 Plate 181 is used to transmit the second probe light, allowing it to reach the second detection assembly accommodating cavity 13, and to reflect the first and third probe lights, allowing them to reach the first filter 180 in the first adjustment cavity 160 through the fifth optical port 174. The first filter 180 is used to transmit the third probe light, allowing it to reach the third filter 182, and to reflect the first probe light, allowing it to reach the first detection assembly accommodating cavity 12 through the first optical port 170. The third filter 182 is used to reflect the third probe light, allowing it to reach the third detection assembly accommodating cavity 14 through the third optical port 172. Thus, the first and second adjustment cavities 160, 161 achieve wavelength splitting and reception of the probe lights. The structure of the laser assembly accommodating cavity 15 in Example 1 is also applicable to this embodiment and is not further described 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 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 structure as in embodiment 1.

[0089] Example 3:

[0090] This embodiment also provides a Combo PON OLT packaging component, which includes a housing 1 and a housing cover 2; Figure 15 As shown, the side wall of the shell 1 is provided with an optical adapter port 11 for setting the 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. 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 those skilled in the art based on the placement angle of each filter.

[0091] 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 used to accommodate the first detection component and the second detection component respectively; at a corner position of the shell 1 away from the optical adapter port 11, a third detection component accommodating cavity 14 is provided, which is used to accommodate 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, which is used to accommodate various laser components; a first adjustment cavity 160 is further provided between the first detection component accommodating cavity 12 and the third detection component accommodating cavity 14, and a second adjustment cavity 161 is further 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 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 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 Figure 16The light port 17 used to connect the first detection component accommodating cavity 12 and the second adjustment cavity 161 is used as the first light port 170, the light port 17 used to connect the second detection component accommodating cavity 13 and the second adjustment cavity 161 is used as the second light port 171, the light port 17 used to connect the third detection component accommodating cavity 14 and the first adjustment cavity 160 is used as the third light port 172, the light port 17 used to connect the laser component accommodating cavity 15 and the second adjustment cavity 161 is used as the fourth light port 173, and the light port 17 used to connect the first adjustment cavity 160 and the second adjustment cavity 161 is used as the fifth light port 174. A first filter 180 is set at the cavity wall position of the second adjustment cavity 161 opposite to the first light opening 170, a second filter 181 and a fourth filter 183 are respectively set at the second light opening 171 and the fourth light opening 173 of the second adjustment cavity 161, a third filter 182 is set at the cavity wall position of the first adjustment cavity 160 opposite to the third light opening 172, and a fifth filter 184 is set at the position of the fifth light opening 174 in the second adjustment 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 assembly 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 assembly accommodating cavity 13 and reflect 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 reflect the first detection light to the first optical filter 180. The third filter 182 is used to reflect the third detection light so that the third detection light passes through the third optical port 172 and reaches the third detection assembly accommodating cavity 14. The first filter 180 is used to reflect the first detection light so that the first detection light passes through the first optical port 170 and reaches the first detection assembly accommodating cavity 12, thereby achieving wavelength demultiplexing 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 the first embodiment is also applicable to the present embodiment and will not be described in detail here.

[0094] In the packaging components provided in Examples 1 and 2, each filter can be implemented using an 8° filter. In this embodiment, a 13° filter is used to implement the fifth filter 184 to meet the reflection of light incident at a large angle, such as for 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 this embodiment is that for devices with a smaller wavelength coverage range, the 13° filter has a larger device size requirement, and the reflection times for the 1270nm and 1310nm channels are better, 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; Figure 17 As shown, the side wall of the shell 1 is provided with an optical adapter port 11 for setting the optical adapter component; a first detection component accommodating cavity 12 and a third detection component accommodating cavity 14 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 third detection component respectively; a laser component accommodating cavity 15 is provided on one side of the shell 1 away from the optical adapter port 11, 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, for accommodating the second detection component; between the first detection component accommodating cavity 12, the second detection component accommodating cavity 13, and the third detection component accommodating cavity 14, a second detection component accommodating cavity 15 is provided. 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 passes through the corresponding light-through port 17 to reach the corresponding detection component accommodating cavity.

[0097] Among them, according to Figure 18The optical port 17 used to connect the first detection assembly accommodating cavity 12 and the adjustment cavity 16 is designated as the first optical port 170, the optical port 17 used to connect the second detection assembly accommodating cavity 13 and the adjustment cavity 16 is designated as the second optical port 171, the optical port 17 used to connect the third detection assembly accommodating cavity 14 and the adjustment cavity 16 is designated as the third optical port 172, and the optical port 17 used to connect the laser assembly accommodating cavity 15 and the adjustment cavity 16 is designated as the fourth optical port 173. A second filter 181, a third filter 182, and a first filter 180 are respectively disposed on the cavity wall of the adjustment cavity 16 at the locations of the second optical port 171, the third optical port 172, and the fourth optical port 173. The first optical filter 180 is disposed on the optical axis of the optical adapter port 11 and is configured to allow the emission light emitted from the laser assembly accommodating cavity 15 to exit the optical adapter port 11 and reflect each detection light to the third optical filter 182. The third optical filter 182 is configured to transmit the third detection light so that it reaches the third detection assembly accommodating cavity 14 and reflect the first and second detection lights to the second optical filter 181. The second optical filter 181 is configured to transmit the second detection light so that it reaches the second detection assembly accommodating cavity 13 and reflect the first detection light so that it passes through the first optical port 170 and reaches the first detection assembly accommodating cavity 12. The structure of the laser assembly accommodating cavity 15 in Example 1 is also applicable to this embodiment and is not further described here.

[0098] This embodiment also provides another optional structure of the laser component accommodating cavity 15, such as Figure 18 As shown, a fourth filter 183 is provided 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 provided on the cavity wall of the laser component accommodating cavity 15 and at a position opposite to the second laser component 55, and a sixth filter 185 is provided 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 emitted light and reflect the third emitted light, so that the second emitted light and the third emitted light are combined and transmitted to the fifth filter 184. The fifth filter 184 is used to reflect the second emitted light and the third emitted light, so that the second emitted light and the third emitted light reach the fourth filter 183. The fourth filter 183 is used to transmit the first emitted light and reflect the second emitted light and the third emitted light, so that the first emitted light, the second emitted light and the third emitted 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 filter 183 , the fifth 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. However, due to the large angle, it is also unable to fully cover the GPON1310±20nm requirement. In this implementation, each detection component uses a coaxial glass insulator pin 6 to connect to the external connection, and its radio frequency performance is worse than that of the third detection component in Examples 1-3, which uses a ceramic pin to connect to the external connection. In addition, four filters are used in the laser component housing 15 of this embodiment, which is one more than in Examples 1-3, resulting in increased cost. In this embodiment, the relative distance between the detection components is closer than in Examples 1-3, resulting in a poorer crosstalk isolation effect than in Examples 1-3. 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 testing the coupling performance of the optical path.

[0100] Example 5:

[0101] Currently, there is no mature 6-way Combo PON OLT design in the industry. If the coaxial packaging of 4-way devices is continued, there will be 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 of 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 requirements.

[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 the 1577nm and 1342nm lasers are narrowband and wavelength-adjustable, they require TEC control. If a coaxial package is used, two separate TECs are required to control the laser temperature. This 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, the TEC has no direct contact with the TO base, but dissipates heat through the outer diameter of the TO, which greatly reduces the effect.

[0105] (4) There is a large electrical crosstalk 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 crosstalk and optical crosstalk.

[0106] (6) Limited RF performance: The current OSA design of Combo PON OLT is composed of 4 TO sockets and some other structural parts. Its maximum rate is only 10Gb / s. For devices with a rate of 50Gb / s, its bandwidth generally needs to meet the requirement of 35GHz. In particular, multi-directional devices with coaxial packaging 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 the embodiment 1 to the embodiment 4, further provides a Combo PON OLT optical device, such as Figure 19 As shown, the optical device includes the Combo PON OLT package assembly described in any one of Examples 1-4, and a first detection assembly 51, a second detection assembly 52, a third detection assembly 53, a first laser assembly 54, a second laser assembly 55, a third laser assembly 56, and an optical adapter 57 encapsulated in the Combo PON OLT package assembly. The arrangement 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] Another preferred embodiment is that 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 their optical axes are offset. Since both are arranged in the same housing, using the same TEC assembly can reduce costs and overall power consumption while providing good heat dissipation for the first laser assembly 54 and the second laser assembly 55.

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

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

[0111] The wavelength of 1342 nm emitted by the first laser assembly 54 is directly output from the optical port after being transmitted through the sixth filter 185 and the second filter 181; the wavelength of 1577 nm emitted by the second laser assembly 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 as an example 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. Figure 10The optical path diagram shown uses the example of a first laser with a central wavelength of 1490 nm, a second laser with a central wavelength of 1342 nm, and a third laser with a central wavelength of 1577 nm. The light emitted by the first, second, and third lasers, respectively, is shaped into approximately parallel light after passing through the first, second, and third lenses. The two parallel light beams emitted by the second and third lenses are then combined by the seventh filter 186 to form a single beam of parallel light. This combined beam of parallel light passes through an optical isolator and a sixth filter 185. It is then combined with the parallel light emitted by the first lens and passed through a collimating lens, and then by the sixth filter 185. Finally, the combined beam of parallel light passes through the second filter 181, is transmitted through the second filter 181, and is then shaped by the third lens. The parallel light is then converted into convergent light and coupled to the optical fiber in the optical fiber ferrule of the optical adapter 57 for output.

[0114] In an embodiment of the present invention, a BOX structure is adopted, eliminating the cap design of the TO package. Three transmit optical ports and three receive optical ports are concentrated within a single housing, making the overall OSA compact and smaller, leaving ample space for the module PCB. The laser and detector components are placed in separate partitions separated by partitions to prevent the entry of optical signals not belonging to the respective partitions, minimize the shared path of optical signals, and thus reduce crosstalk between optical signals. Furthermore, the laser and detector components are placed in separate partitions, and the corresponding metal traces are separated as much as possible to reduce electrical crosstalk. Furthermore, at high-speed 50G rates, the high-frequency performance of the BOX package's ceramic traces is superior to the TO package's glass insulator traces. While the present invention not only offers cost and performance compatibility with the glass insulator pin traces of lower-speed channels, but also considers ceramic traces for 50G and future higher speeds, combining the two in the implementation of the invention. Finally, the BOX package's larger contact area offers advantages over the TO package in terms of heat dissipation, contributing to improved overall device performance.

[0115] In this embodiment, each detection component can be an avalanche photodiode APD (Avalanche PhotonDiode, avalanche photodiode), 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 as an example for explanation. The RX part includes a light receiving component consisting of two avalanche photodiodes APD1 (first detection component 51), avalanche photodiodes APD2 (second detection component 52), and avalanche photodiodes APD3 (third detection component 53). Avalanche photodiodes APD1, Avalanche photodiodes APD2, and APD3 receive light with wavelengths of 1310nm, 1270nm, and 1286nm, respectively. Figure 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. Three combined beams of light with wavelengths of 1270 nm, 1286 nm, and 1310 nm are incident from the optical fiber in the fiber optic ferrule. After being shaped by the lens, the divergent light is converted into parallel light. The three 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 1286 nm, which is received by APD3. The third filter 182 reflects the light with wavelengths of 1270 nm and 1310 nm to the fifth filter 184. The fifth filter 184 reflects the light with wavelengths of 1270 nm and 1310 nm to the first filter 180. The light with wavelengths of 1270 nm is transmitted by the first filter 180 and received by APD2. The light with wavelengths of 1310 nm is reflected to the first detection assembly cavity 12 and 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, and the central wavelength of the third laser 330 is 1577nm. The first detection component 51 receives 1310nm light, the second detection component 52 receives 1270nm light, and the third detection component 53 receives 1310nm light. 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 cooler, 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 reflow, the side of this 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 blocking 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 a SOA, an aluminum nitride heat sink, a backlight monitoring device (MPD), and a lens (first lens 221). The functions of these components 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 also has circuits installed on its surface to achieve circuit connections; the backlight monitoring device (MPD) is used to monitor the output light of the 1490 laser; the lens can be made of silicon or optical glass and is used to convert the light emitted by the 1490 laser into collimated light before it enters the subsequent optical path.

[0119] The 1270nm receiver assembly consists of an APD chip, a TIA chip, several capacitors, a PEI lens, and a filter. The features and functions of each component are as follows: the APD chip receives light and converts it into an electrical signal; the TIA chip amplifies the electrical signal with a certain intensity and low noise; the capacitors filter the power supply; the filter transmits only 1270nm light at 0° incidence and reflects all other light; the PEI lens, such as 4, Figure 8 As shown, the material is PEI and is characterized by 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 a 45° angle, and the third optical surface 43 is a plane with an aspheric lens. The first optical surface 41 serves as a carrier, with a filter bonded to the plane. Light is incident vertically, passes through the filter and the first optical surface in sequence, and then passes through the second optical surface 42 at a 45° angle, where it is fully reflected. The light then turns 90° and enters 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 receiver assembly consists of an APD chip, a TIA chip, several capacitors, a PEI lens, and a filter. The characteristics and functions of each component are as follows: the APD chip receives light and converts it into an electrical signal; the TIA chip amplifies the electrical signal with a certain intensity and low noise; the capacitor is used for power filtering; the filter is a filter that transmits only 1310nm light at 0° incidence and reflects other light; the PEI lens 4, such as Figure 8 As shown, the material is PEI and is characterized by having three optical surfaces: a first optical surface 41, a plane perpendicular to the direction of the incident light; a second optical surface 42, a plane at a 45° angle; and a third optical surface 43, a plane with an aspheric lens. The first optical surface 41 serves as a carrier, with a filter bonded to the plane. Light is incident vertically, passes through the filter and first optical surface 41 in sequence, and then passes through the second optical surface 42 at a 45° angle, where it is fully reflected. The light then turns 90° and enters 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 receiver assembly consists of an APD chip, a TIA chip, several capacitors, a PEI lens, and a filter. The features and functions of each component are as follows: the APD chip receives light and converts it into an electrical signal; the TIA chip amplifies the electrical signal with a certain intensity and low noise; the capacitors filter the power supply; the filter transmits only 1286nm light at 0° incidence and reflects all other light; the PEI lens, such as 4, Figure 10 As shown, the material is PEI and is characterized by having three optical surfaces: a first optical surface 41, a plane perpendicular to the direction of the incident light; a second optical surface 42, a plane at a 45° angle; and a third optical surface 43, a plane with an aspheric lens. The first optical surface 41 serves as a carrier, with a filter bonded to the plane. Light is incident vertically, passes through the filter and first optical surface 41 in sequence, and then passes through the second optical surface 42 at a 45° angle, where it is fully reflected. The light then turns 90° and enters 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 entry of optical signals that do not belong to the partition, minimize the shared path of the optical signals, and achieve the purpose of reducing mutual crosstalk between optical signals. At the same time, the laser assembly and the detection assembly are arranged in different partitions, and the corresponding metal traces are also separated as much as possible to reduce electrical crosstalk. Furthermore, a metal cavity is also set between the high-speed transmitting and receiving component porcelain parts to shield the signals and prevent mutual crosstalk of the signals from the gold wire bonding area. At the high-speed 50G rate, the high-frequency performance of the BOX package ceramic traces will be better than the TO package glass insulator traces. This embodiment is compatible with the glass insulator pin traces of the low-speed channel in terms of cost and performance, and also considers the ceramic trace method for 50G and future higher rates, and combines the two in the implementation of this 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 scope of protection 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 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; and 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; An adjustment cavity (16) is further 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 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 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 positions 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 optical port (170), the second optical filter (181) is arranged at the position of the second optical port (171), and the third optical filter (182) is arranged at the position of the third optical port (172). A fourth optical filter (183) and a fifth optical filter (184) are arranged at 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); 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 optical port (173), so that the first detection light is transmitted from the fourth optical 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 adjustment 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 paths of the emitted lights so that the emitted lights of different wavelengths are combined and emitted from the light port (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 provided at the location of the fifth light passage (174), and a seventh filter (186) is provided 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 regulating chamber (152); 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).

5. The Combo PON OLT packaging component according to claim 3, characterized in that: A bayonet (19) and a movable clamping 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 cavity (14) and the laser component accommodating cavity (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) 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 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 platforms, 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 provided 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), wherein 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 package component according to 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) encapsulated in the Combo PON OLT package 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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