Optical device, optical module and optical communication system

Abstract

The invention provides an optical device, an optical module and an optical communication system. The optical device provided by the invention comprises a tube body, and a first receiving packaging structure, a second receiving packaging structure and a first transmitting packaging structure which are mounted on the tube body. A first light receiving chip used for receiving light of a first wave band is packaged in the first receiving packaging structure. A second light receiving chip used for receiving light of a second wave band and a third light receiving chip used for receiving light of a third wave band are packaged in the second receiving packaging structure. A first light emitting chip used for emitting light of a fourth wave band and a second light emitting chip used for emitting light of a fifth wave band are packaged in the first emitting packaging structure. The optical device provided by the invention can integrate three receiving optical paths and three transmitting optical paths at the same time, and can realize compatibility of three generations of network services so as to realize smooth upgrading of different generations of network services, so that the compatibility of an optical module and an optical communication system applying the optical device to different generations of network services can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of optical devices, and in particular to an optical device, an optical module and an optical communication system. Background Art

[0002] In the long-term evolution of passive optical network (PON), the commercialization of GPON optical device products and 10G PON optical device products has been realized, thus realizing the leap from 100M to 1000M network. In the process of upgrading from GPON to 10G PON, industry manufacturers have effectively solved the problem of smooth upgrade of two generations of services by integrating the two generations of GPON and 10G PON services.

[0003] With the continuous increase in demand for optical networks, there is a demand for 50G PON, and the 50G PON standard is gradually becoming clear, and it is possible to achieve commercialization in the short term. In the process of upgrading the current optical device products compatible with GPON and 10G PON services to 50G PON, the industry manufacturers are basically concerned about achieving compatibility between 10G PON and 50G PON services. However, there are still a large number of GPON optical device products in the market, and they cannot be completely withdrawn from the market in the short term. Based on this, providing an optical device that is compatible with the three generations of GPON, 10GPON, and 50GPON services is a difficult problem that technicians in this field need to overcome urgently. Summary of the invention

[0004] The present application provides an optical device, an optical module and an optical communication system to achieve compatibility of multiple generations of PON services, thereby achieving smooth upgrade of different generations of PON services.

[0005] In the first aspect, the present application provides an optical device, which includes a tube body, a first receiving packaging structure, a second receiving packaging structure and a first transmitting packaging structure. The first receiving packaging structure includes a first tube seat, a first tube cap and a first light receiving chip, the first tube cap is arranged on the first tube seat, the first tube cap and the first tube seat form a first accommodating cavity, the first tube cap is installed on the tube body, and the end of the first tube cap used to connect to the tube body includes a first light receiving port. The first light receiving chip is accommodated in the first accommodating cavity, and the first light receiving chip is used to receive light of a first wavelength band from the first light receiving port. The second receiving packaging structure includes a second tube seat, a second tube cap, a second light receiving chip and a third light receiving chip, the second tube cap is arranged on the second tube seat, the second tube cap and the second tube seat form a second accommodating cavity, the second tube cap is installed on the tube body, and the end of the second tube cap used to connect to the tube body includes a second light receiving port. The second light receiving chip and the third light receiving chip are accommodated in the second accommodating cavity, the second light receiving chip is used to receive light of a second wavelength band from the second light receiving port, and the third light receiving chip is used to receive light of a third wavelength band from the third light receiving port. The first emission packaging structure includes a third tube seat, a third tube cap, a first light emitting chip and a second light emitting chip, the third tube cap is arranged on the third tube seat, the third tube cap and the third tube seat form a third accommodating cavity, the third tube cap is installed on the tube body, and the end of the third tube cap used for connecting with the tube body includes a first light emitting port. The first light emitting chip and the second light emitting chip are accommodated in the third accommodating cavity, the first light emitting chip is used to emit light of the fourth wavelength band to the first light emitting port, and the second light emitting chip is used to emit light of the fifth wavelength band to the first light emitting port.

[0006] The optical device provided by the present application can simultaneously integrate three receiving optical paths and three transmitting optical paths, which can achieve compatibility with three generations of network services, so as to achieve smooth upgrades of different generations of network services, thereby improving the compatibility of optical modules and optical communication systems using the optical device with different generations of network services. In addition, since the optical device encapsulates three receiving chips through the two receiving packaging structures of the first receiving packaging structure and the second receiving packaging structure, and encapsulates the first transmitting chip and the second transmitting chip through the first transmitting packaging structure, it is conducive to realizing the miniaturization design of the optical device.

[0007] In order to meet the optical device's requirement for emitting three light beams, in a possible implementation of the present application, the first emission packaging structure also includes a third light emission chip, which is accommodated in the third accommodating cavity, and the third light emission chip is used to emit light of the sixth wavelength band to the first light emission port. With such a design, three light emission chips are packaged simultaneously through one emission packaging structure, which can effectively improve the integration of the optical device, thereby facilitating the reduction of the size of the optical device.

[0008] In another possible implementation of the present application, the optical device also includes a second emission packaging structure, which includes a fourth tube seat, a fourth tube cap and a third emission chip, the fourth tube cap is arranged on the fourth tube seat, the fourth tube cap and the fourth tube seat form a fourth accommodating cavity, the fourth tube cap is installed on the tube body, and the end of the fourth tube cap used for connecting to the tube body includes a second light emission port. The third emission chip is accommodated in the fourth accommodating cavity, and the third emission chip is used to emit light of the sixth wavelength band to the second light emission port. With such a design, three emission chips are encapsulated by the first emission packaging structure and the second emission packaging structure, which not only realizes the emission of three-way light by the optical device, but also helps to improve the design flexibility of the optical device.

[0009] In the present application, the frequency bands of the light emitted by each emitting chip are not specifically limited, and they can be combined according to specific designs. For example, in one possible implementation, the light of the fourth band includes light with a wavelength of 1340nm to 1344nm, the light of the fifth band includes light with a wavelength of 1480nm to 1490nm, and the light of the sixth band includes light with a wavelength of 1575nm to 1580nm. Or in another possible implementation, the light of the fourth band includes light with a wavelength of 1340nm to 1344nm, the light of the fifth band includes light with a wavelength of 1575nm to 1580nm, and the light of the sixth band includes light with a wavelength of 1480nm to 1490nm. Or in another possible implementation, the light of the fourth wavelength band includes light of wavelengths of 1480nm to 1490nm, the light of the fifth wavelength band includes light of wavelengths of 1575nm to 1580nm, and the light of the sixth wavelength band includes light of wavelengths of 1340nm to 1344nm.

[0010] In a possible implementation of the present application, the first tube cap of the first receiving packaging structure and the second tube cap of the second receiving packaging structure are installed on the tube wall of the tube body, that is, the first receiving packaging structure and the second receiving packaging structure are both arranged on the side of the optical device, which is conducive to reducing the structural size of the optical device.

[0011] In a possible implementation of the present application, the third tube cap of the first emission packaging structure can be installed at one end of the tube body, that is, the axis of the first reflection packaging structure coincides with the axis of the main optical axis of the optical device. In this way, when the light in the fourth band or the light in the fifth band includes light with a wavelength of 1340nm to 1344nm, the emission light of the 50G PON can be transmitted along the main optical axis of the optical device, which is conducive to improving the high-frequency characteristics of the optical device.

[0012] In addition, the third tube cap of the first emission packaging structure can also be installed on the tube wall of the tube body to improve the arrangement flexibility of the optical device.

[0013] In a possible implementation of the present application, the optical device further includes an optical interface, which is installed at one end of the tube body and is used to receive light from outside the optical device. The light received by the optical interface includes light in the first wavelength band, light in the second wavelength band, and light in the third wavelength band.

[0014] In order to allow the light of the first wavelength band received by the optical interface to enter the first receiving packaging structure through the first light receiving port of the first tube cap, the light of the second wavelength band and the light of the third wavelength band received by the optical interface can enter the second receiving packaging structure through the second light receiving port of the second tube cap. In a possible implementation of the present application, the optical device also includes a first wave splitter component and a second wave splitter component. Along the axial direction of the tube body, the first wave splitter component is arranged close to the optical interface relative to the second wave splitter component, and the first wave splitter component and the second wave splitter component are installed on the tube wall of the tube body. Among them, the second wave splitter component is used to reflect the light received by the optical interface to the first wave splitter component, the first wave splitter component is used to reflect the light of the first wavelength band reflected by the second wave splitter component to the first light receiving port of the first tube cap, and the first wave splitter component is used to reflect the light of the second wavelength band and the light of the third wavelength band reflected by the second wave splitter component to the second light receiving port of the second tube cap.

[0015] When the first wave splitter assembly is specifically set, in a possible implementation of the present application, the first wave splitter assembly includes a first bracket, a first filter and a second filter, the tube wall includes a first mounting hole, the first bracket is mounted on the first mounting hole, the first filter is arranged on the first bracket, the first filter is used to transmit the light of the first wavelength band, and is used to reflect the light of the second wavelength band and the light of the third wavelength band to the second light receiving port of the second tube cap. The second filter is arranged close to the optical interface relative to the first filter, and the projection of the second filter on the first tube cap covers at least part of the first light receiving port, so that the second filter can be used to reflect the light of the first wavelength band transmitted by the first filter to the first light receiving port. In this way, during the preparation of the optical device, the assembly angle of the first filter can be adjusted by rotating the first bracket relative to the tube body, which can effectively compress the adjustment tolerance of the three-way receiving light to improve the splitting accuracy of the optical device.

[0016] In the present application, the second filter can also be set on the first bracket. During the preparation of the optical device, the assembly angles of the first filter and the second filter can be synchronously adjusted by rotating the first bracket, which is beneficial to improving the splitting effect of the optical device.

[0017] In a possible implementation of the present application, the second wave splitter assembly includes a second bracket and a third filter. The tube wall of the tube body also includes a second mounting hole, the first mounting hole and the second mounting hole are arranged adjacent to each other along the axial direction of the tube body, and the second bracket is mounted on the second mounting hole. In addition, the third filter is arranged on the second bracket, and the third filter is used to reflect the light received by the optical interface to the first filter. In this way, during the preparation of the optical device, the assembly angle of the third filter can be adjusted by rotating the second bracket to achieve effective splitting of the received light by the optical device.

[0018] The second wave splitter assembly may also not be provided with the second bracket, in which case the second wave splitter assembly only includes the third filter, which is provided on the inner wall of the tube cavity of the tube body, so that the third filter is used to reflect the light received by the optical interface to the first filter. This can effectively simplify the structure of the optical device.

[0019] In a possible implementation of the present application, the acute angle between the plane where the first filter is located and the plane perpendicular to the axis of the tube body is less than or equal to 25°; the acute angle between the plane where the third filter is located and the plane perpendicular to the axis of the tube body is less than or equal to 25°. In this way, the spacing between the first splitter assembly and the second splitter assembly in each direction can be reduced, which is conducive to reducing the size of the optical device.

[0020] In order to achieve the splitting of the light received by the optical interface, in another possible implementation of the present application, the optical device also includes a zblock component and a sixth filter, wherein, along the axial direction of the tube body, the sixth filter is arranged close to the optical interface relative to the zblock component, the zblock component is installed in the tube cavity of the tube body, the sixth filter is arranged on the inner wall of the tube cavity of the tube body, and the projection of the sixth filter on the first tube cap covers at least part of the first light receiving port. The zblock component is used to reflect the light of the first band received by the optical interface to the sixth filter, and to reflect the light of the second band and the light of the third band received by the optical interface to the second light receiving port of the second tube cap. The sixth filter is used to reflect the light of the first band reflected by the zblock component to the first light receiving port of the first tube cap. In this way, the multiple reflection characteristics of the zblock component can be used to realize its narrowband band-stop splitting function, so as to improve the splitting isolation performance of the optical device, thereby improving the splitting accuracy of the received light of three different bands.

[0021] In a possible implementation of the present application, the light of the first wavelength band includes light of wavelengths of 1284nm to 1288nm; the light of the second wavelength band includes light of wavelengths of 1290nm to 1330nm; the light of the third wavelength band includes light of wavelengths of 1260nm to 1280nm. Then the first receiving package structure is a 50G PON receiving package structure, and the second receiving package structure is a GPON&10G PON two-in-one receiving package structure.

[0022] In a possible implementation of the present application, the first receiving package structure can be arranged close to the optical interface relative to the second receiving package structure. In this way, when the light in the first band includes light of 1284nm to 1288nm, the light in the first band can be separated preferentially, which can effectively compress the overall size of the optical device to meet the miniaturization design requirements of the optical device.

[0023] In a possible implementation of the present application, in order to allow the light of the second wavelength band and the light of the third wavelength band to enter the second receiving package structure from the second light receiving port of the second tube cap, the optical device further includes a fourth filter. The fourth filter is disposed on the inner wall of the tube cavity of the tube body, the projection of the fourth filter on the second tube cap covers at least part of the second light receiving port, and the fourth filter is used to reflect the light of the second wavelength band and the light of the third wavelength band to the second light receiving port.

[0024] In a second aspect, the present application further provides an optical module, the optical module comprising a housing and the optical device of the first aspect, the optical device being housed in the housing, and the housing having an optical port, the optical port being used to connect a communication optical cable, and the optical device being connected to the communication optical cable through the optical port, thereby enabling the optical device to receive light. The optical module provided by the present application can achieve compatibility with network services, so as to achieve smooth upgrades of different generations of network services.

[0025] In a third aspect, the present application further provides an optical communication system, the optical communication system comprising an optical line terminal device and an optical network unit, wherein the optical line terminal device is connected to the network unit via a passive distribution network device. The optical line terminal device comprises the optical device of the first aspect or the optical module of the second aspect, or the optical network unit comprises the optical device of the first aspect or the optical module of the second aspect. The optical communication system provided by the present application can achieve compatibility with three generations of network services to achieve smooth upgrades of different generations of network services. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of an optical communication system provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structure of an optical module provided in an embodiment of the present application;

[0028] Figure 3 A schematic diagram of the structure of an optical device provided in an embodiment of the present application;

[0029] Figure 4 for Figure 3 AA cross-sectional view of the optical device shown in;

[0030] Figure 5a to Figure 5c Several structural schematic diagrams of the first wave splitting component provided in the embodiments of the present application;

[0031] Figure 6a to Figure 6g for Figure 5a A schematic structural diagram of the first bracket at another angle shown;

[0032] Figure 7a and Figure 7b Several structural schematic diagrams of the second wave splitting component provided in the embodiments of the present application;

[0033] Figure 8 A schematic diagram of a preparation process of an optical device provided in an embodiment of the present application;

[0034] Fig. 9 A schematic diagram of a method for preparing an optical device provided in an embodiment of the present application;

[0035] Fig.10 for Figure 4 A simplified structural schematic diagram of an optical device shown;

[0036] Fig.11 A cross-sectional view of another structure of an optical device provided in an embodiment of the present application;

[0037] Fig.12 A cross-sectional view of another structure of an optical device provided in an embodiment of the present application;

[0038] Fig.13 Another schematic diagram of the structure of an optical device provided in an embodiment of the present application;

[0039] Fig.14 Another schematic diagram of the structure of an optical device provided in an embodiment of the present application.

[0040] Reference numerals:

[0041] 100-optical line terminal equipment; 200-optical network unit; 300-passive optical distribution network device;

[0042] 1- optical module; 101- housing; 1011- electrical port; 1012- optical port; 102- optical device; 1021- tube body; 10211- first mounting hole;

[0043] 10212 - second mounting hole; 1022 - first receiving packaging structure; 10221 - first tube seat; 10222 - first tube cap;

[0044] 102221-first light receiving port; 1023-second receiving packaging structure; 10231-second tube base; 10232-second tube cap;

[0045] 102321-second light receiving port; 1024-optical interface; 1025-first lens; 10261-first wave splitting component; 102611-first bracket;

[0046] 1026111-first mounting portion; 10261111-first mounting surface; 10261112-first supporting surface; 1026112-first adjusting portion;

[0047] 10261121a-square hole; 10261121b-hexagonal hole; 10261121c-cross hole; 10261121d-straight hole;

[0048] 10261121e-external hexagonal structure; 102612-first filter assembly; 1026121-first filter; 1026122-second filter;

[0049] 10262-second splitter assembly; 102621-second bracket; 1026211-second mounting portion; 1026212-second adjustment portion;

[0050] 102622-second filter assembly; 1026221-third filter; 10263-zblock assembly; 10264-sixth filter;

[0051] 10271- fourth filter; 10272- transmission filter; 10273- fifth filter; 1028- first emission packaging structure;

[0052] 10281-third tube base; 10282-third tube cap; 102821-first light emitting port; 1029-second emitting packaging structure;

[0053] 10291-fourth tube base; 10292-fourth tube cap; 102921-second light emitting port; 1030-second lens; 1031-first isolator;

[0054] 1032 - second isolator; 1033 - third transmitting packaging structure; 103 - optical module driving circuit; 2 - rotating tool. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as being limited to the embodiments described herein. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted. The words expressing position and direction described in the embodiments of the present application are all illustrated by taking the accompanying drawings as examples, but changes may be made as needed, and the changes made are all included in the scope of protection of the present application. The drawings of the embodiments of the present application are only used to illustrate the relative position relationship, and they do not represent the true proportion.

[0056] It should be noted that specific details are described in the following description to facilitate understanding of the present application. However, the present application can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific implementation methods disclosed below.

[0057] In order to facilitate the understanding of the optical device, optical module and optical communication system provided by the present application, the following first introduces their application scenarios. With the development of communication technology, the application of using optical signals to realize signal transmission has become more and more widespread. Figure 1 , Figure 1 A structural schematic diagram of an optical communication system provided in an embodiment of the present application. The optical communication system may include an optical line terminal device 100 and an optical network unit 200, wherein the optical line terminal device 100 may include an optical module 1, and the optical module 1 may be connected to a passive optical distribution network device 300 via a communication optical cable, and the passive optical distribution network device 300 may be used to distribute the light beam emitted by the optical module 1 to multiple optical network units 200, so that the optical line terminal device 100 is connected to the optical network unit 200 via the passive optical distribution network device 300.

[0058] It is understandable that the optical communication system may include multiple optical line terminal devices 100, and the optical line terminal devices 100 connected by the communication optical cable may exchange optical signals. In addition, each optical line terminal device 100 may include one or more optical modules 1, and the one or more optical modules 1 may be arranged on a single board of the optical line terminal device 100.

[0059] Reference Figure 2 , Figure 2A structural schematic diagram of an optical module provided in an embodiment of the present application. The optical module 1 generally includes a housing 101, an optical device 102 and an optical module driving circuit 103. The optical device 102 and the optical module driving circuit 103 are accommodated in the housing 101. The housing 101 includes an electrical port 1011 and an optical port 1012. The optical module driving circuit 103 is connected to the electrical port 1011, and the optical module driving circuit 103 is connected to the optical device 102. The optical port 1012 is used to connect a communication optical cable, and the optical device 102 is connected to the communication optical cable through the optical port 1012.

[0060] In the optical module 1, the optical module driving circuit 103 can provide an electrical signal to the optical device 102, and the optical device 102 can convert the electrical signal into an optical signal, which can be transmitted via a communication optical cable connected to the optical port 1012. In addition, the optical device 102 can receive an external optical signal through the optical port 1012, and convert the received optical signal into an electrical signal and transmit it to the optical module driving circuit 103 for processing. It can be seen that the optical device 102 is a key component for the optical module 1 to realize optical signal transmission.

[0061] At present, in the PON field, in order to adapt to the continuous improvement of optical network demand, there are optical device products compatible with GPON and 10G PON, as well as optical device products compatible with 10G PON and 50G PON. However, under the current market conditions, there are still a large number of GPON optical device products, and they cannot be completely withdrawn from the market in the short term, that is, GPON, 10G PON and 50GPON will coexist for a long time.

[0062] In view of this, the optical device provided in the embodiment of the present application integrates three receiving optical paths and three transmitting optical paths at the same time, so as to achieve compatibility with three generations of services, namely GPON, 10G PON and 50G PON, thereby realizing smooth upgrade of different generations of PON services.

[0063] At present, the packaging of optical devices mainly includes coaxial packaging, box packaging, chips on board (COB) packaging, etc. Transistor-outline (TO) packaging is the basic packaging structure of coaxial-type package optical sub-assembly.

[0064] In this application, the packaging form of the optical device is not limited. In order for the optical device to integrate three receiving optical paths and three transmitting optical paths at the same time, the optical device needs to integrate multiple packages. Taking the TO package as an example, the TO package usually includes a transmitting type and a receiving type, wherein a TO package may contain a laser chip (laser diode, LD) or a detector chip (photo diode, PD) for transmitting or receiving a single-channel / single-wavelength optical signal; or a TO package may contain multiple LDs or multiple PDs for transmitting or receiving multi-channel / multi-wavelength optical signals.

[0065] In the present application, a packaging structure including multiple LDs is referred to as an all-in-one transmitting packaging structure, and a packaging structure including multiple PDs is referred to as an all-in-one receiving packaging structure. For example, a packaging structure including two LDs can be referred to as a two-in-one transmitting packaging structure, and a packaging structure including two PDs can be referred to as a two-in-one receiving packaging structure.

[0066] It is understandable that integrating multiple LDs or multiple PDs in one packaging structure can effectively control the packaging size of the optical device, thereby meeting the miniaturization design requirements of the optical device. Based on this, the optical device provided in the embodiment of the present application may include an all-in-one transmitting packaging structure and an all-in-one receiving packaging structure. In addition, in the present application, the setting positions of multiple packaging structures in the optical device can be adjusted to form optical paths in multiple transmission directions in the optical device to realize the multi-directional transmission function of the optical device, which is conducive to reducing the volume of the optical device. The optical device provided in the embodiment of the present application will be described in detail below in conjunction with the accompanying drawings.

[0067] Reference Figure 3 , Figure 3 A structural schematic diagram of an optical device provided in an embodiment of the present application. The optical device 102 includes a tube body 1021, a first receiving package structure 1022, and a second receiving package structure 1023, wherein the first receiving package structure 1022 and the second receiving package structure 1023 are both installed on the tube wall of the tube body 1021, and the axis aa of the first receiving package structure 1022 does not coincide with the axis bb of the second receiving package structure 1023. In some other possible embodiments of the present application, the axis aa of the first receiving package structure 1022 and the axis bb of the second receiving package structure 1023 can also be made to coincide with each other according to the specific design requirements of the optical device, which should still be understood to fall within the protection scope of the present application.

[0068] exist Figure 3 In the optical device 102 shown in the figure, the first receiving package structure 1022 can be a single receiving package structure. When the first receiving package structure 1022 is specifically set, reference can be made to Figure 4 , Figure 4 for Figure 3The first receiving package structure 1022 may include a first tube seat 10221, a first tube cap 10222 and a first light receiving chip ( Figure 4 10221), the first tube cap 10222 is arranged on the first tube seat 10221, the first tube cap 10222 and the first tube seat 10221 form a first accommodating cavity, and the first tube cap 10222 is installed on the tube wall of the tube body 1021, so as to realize the installation of the first receiving package structure 1022 and the tube wall of the tube body 1021. The first light receiving chip is accommodated in the above-mentioned first accommodating cavity. In addition, the end of the first tube cap 10222 for connecting to the tube body 1021 includes a first light receiving port 102221, and the first light receiving chip can be used to receive light of the first wavelength band from the first light receiving port 102221. Exemplarily, the light of the first wavelength band includes light of wavelengths of 1284nm to 1288nm, and the first receiving package structure 1022 is a 50G PON receiving package structure.

[0069] The second receiving package structure 1023 is a two-in-one receiving package structure, which can package a second optical receiving chip and a third optical receiving chip ( Figure 4 ). In specific implementation, the second receiving package structure 1023 also includes a second tube seat 10231 and a second tube cap 10232. The second tube cap 10232 is arranged on the second tube seat 10231. The second tube cap 10232 and the second tube seat 10231 form a second accommodating cavity. The second tube cap 10232 is installed on the tube wall of the tube body 1021, so as to realize the installation of the second receiving package structure 1023 and the tube wall of the tube body 1021. The second light receiving chip is accommodated in the above-mentioned second accommodating cavity. In addition, the end of the second tube cap 10232 for connecting to the tube body includes a second light receiving port 102321. The second light receiving chip is used to receive light of the second wavelength band from the second light receiving port 102321. The third light receiving chip is used to receive light of the third wavelength band from the second light receiving port 102321. Among them, the light in the second band may include light with a wavelength of 1290nm~1330nm, and the light in the third band may include light with a wavelength of 1260nm~1280nm, then the second receiving packaging structure 1023 is a GPON&10GPON two-in-one receiving packaging structure.

[0070] You can continue to refer to Figure 3 , the optical device 102 may further include an optical interface 1024, which is connected to one end of the tube body 1021. The optical interface 1024 may be used to connect a communication optical cable, thereby receiving light from outside the optical device 102 through the communication optical cable. It is understood that in order to allow the light received by the optical interface 1024 to be transmitted along a set optical path into the tube body 1021, a collimating lens may be provided at the connection between the optical interface 1024 and the tube body 1021. In specific implementation, reference may be made to Figure 4 The optical device 102 includes a first lens 1025, which is accommodated in the tube cavity of the tube body 1021, and the first lens 1025 is connected to the part of the tube body 1021 used to connect the optical interface 1024, and the connection method can be but not limited to welding, bonding or clamping, so that the first lens 1025 is arranged adjacent to the optical interface 1024. In addition, the first lens 1025 is coaxially arranged with the optical interface 1024, so that the first lens 1025 can collimate the light received by the optical interface 1024. In another possible embodiment of the present application, the first lens 1025 can also be integrated with the optical interface 1024 to improve the integration of the optical device 102.

[0071] Since the light received by the optical interface 1024 includes light of multiple bands, in order to make the light of different bands enter the corresponding receiving packaging structure according to the set optical path, it is necessary to split the light of each band. At present, the splitting of the light of coaxial optical devices is mainly achieved by wavelength division multiplexing, that is, the light of each band is reflected and transmitted through multiple filters, so that the light of each band can be transmitted according to a specific optical path, thereby achieving the purpose of splitting the light of each band. However, since the wavelengths of the light of each band are relatively close, the splitting spacing of the light of each band is small. In order to achieve effective splitting of the light of each band, the filter itself is required to have a high splitting steepness, and the assembly tolerance of the filter in the optical device is required to be small. The splitting steepness of the filter itself and the assembly tolerance of the filter are key factors that restrict the integration of more optical paths in the optical device. In order to overcome this problem, the optical device 102 provided in the embodiment of the present application is provided with an adjustable wavelength splitter during the preparation process, so as to reduce the assembly tolerance of the filter by making the assembly angles of multiple filters adjustable, thereby achieving effective light splitting of each band. Figure 4The optical device 102 provided in the present application further includes a first wave splitter component 10261 and a second wave splitter component 10262 , and the first wave splitter component 10261 and the second wave splitter component 10262 are installed on the tube wall of the tube body 1021 . Among them, during the preparation process of the optical device 102, the transmission direction of the first band light, the second band light and the third band light received by the optical device 102 through the optical interface 1024 can be adjusted by rotating the first wave splitter component 10261 and the second wave splitter component 10262 relative to the tube body 1021, so that the first wave splitter component 10261 can reflect the first band light received by the optical device 102 through the optical interface 1024 to the first light receiving port 102221 of the first tube cap 10222 of the first receiving packaging structure 1022, and reflect the second band light and the third band light received by the optical device 102 through the optical interface 1024 to the second light receiving port 102321 of the second tube cap 10232 of the second receiving packaging structure 1023.

[0072] When the first splitter assembly 10261 and the second splitter assembly 10262 are specifically set, Figure 3 In the optical device 102 shown, along the axial direction of the tube body 1021 , the first wave splitting component 10261 is arranged close to the optical interface 1024 relative to the second wave splitting component 10262 .

[0073] Reference Figure 5a , Figure 5a A schematic diagram of the structure of the first wave splitter assembly 10261 provided in the embodiment of the present application. The first wave splitter assembly 10261 includes a first bracket 102611 and a first filter assembly 102612. The first bracket 102611 is installed at Figure 3 In the tube body 1021 shown in the figure, the first filter assembly 102612 is arranged on the first bracket 102611. In the process of preparing the optical device 102, the first filter assembly 102612 can be driven to rotate by rotating the first bracket 102611 relative to the tube body 1021, so as to adjust the angle of each filter in the first filter assembly 102612.

[0074] In the optical device 102 provided in the embodiment of the present application, the specific arrangement form of the first wave splitter assembly 10261 is not limited, wherein the first bracket 102611 includes a first mounting portion 1026111 and a first adjusting portion 1026112 connected to each other, and the first mounting portion 1026111 can be arranged in a rod-shaped structure. In the present application, the cross-sectional shape of the first mounting portion 1026111 is not limited. For example, the first mounting portion 1026111 can be a part of a cylindrical rod, and the first mounting portion 1026111 and the first adjusting portion 1026112 are arranged coaxially, as long as the first mounting portion 1026111 can rotate synchronously with the first adjusting portion 1026112. In addition, the first mounting portion 1026111 can include a first mounting surface 10261111, and the first filter assembly 102612 is mounted on the first mounting surface 10261111.

[0075] In addition, Figure 5a In the first wave splitter component 10261 shown, the first mounting portion 1026111 also includes a first supporting surface 10261112. The adjacent first mounting surface 10261111 and the first supporting surface 10261112 can be set at any angle, as long as the first supporting surface 10261112 can support the first filter assembly 102612, so as to improve the mounting accuracy and convenience of the first filter assembly 102612 and the first mounting surface 10261111, thereby improving the mounting tolerance of the first filter assembly 102612.

[0076] Reference Figure 5b , Figure 5b Another structural schematic diagram of the first wave splitter component 10261 provided in the embodiment of the present application can be used to illustrate another configuration method of the first mounting portion 1026111. Figure 5a Compared with the first wave splitter component 10261 shown, Figure 5b The first mounting portion 1026111 of the first wave splitter component 10261 shown in the figure is only provided with the first supporting surface 10261112 corresponding to a part of the first mounting surface 10261111 , which can effectively simplify the structure of the first bracket 102611 .

[0077] Another example Figure 5c In the first wave splitter assembly 10261 shown, the first mounting portion 1026111 is not provided with the first supporting surface 10261112 , so as to further simplify the structure of the first bracket 102611 .

[0078] Above Figure 5a to Figure 5cThe first wave splitter component 10261 shown is only an exemplary description of the arrangement of the first mounting portion 1026111 of the first bracket 102611, and in the optical device 102 provided in the present application, the arrangement of the first mounting portion 1026111 is not limited to this, and they are not listed one by one here, but they should all be understood to fall within the scope of protection of the present application.

[0079] Reference Figure 6a , Figure 6a for Figure 5a The schematic diagram of the structure of the first bracket 102611 at another angle shown in FIG. 1 can be used to illustrate the arrangement of the first adjustment portion 1026112. The first adjustment portion 1026112 can be a cylindrical structure. Figure 3 , the tube body 1021 may be provided with a first mounting hole 10211, and the first adjusting portion 1026112 may be installed in the first mounting hole 10211, so that the first bracket 102611 is installed in the first mounting hole 10211. In this way, during the preparation of the optical device, the first bracket 102611 may rotate relative to the tube body 1021 in the first mounting hole 10211, thereby driving the first filter assembly 102612 to rotate relative to the tube body 1021, so as to adjust the installation angle of the first filter assembly 102612.

[0080] In the present application, the first adjustment portion 1026112 of the first bracket 102611 can be Figure 6a In addition to the configuration shown in the figure, other possible configurations may also be used. For example, Figure 6b In the first bracket 102611 shown, the cross-sectional shape of the first adjustment portion 1026112 includes an arc, and the arc is a major arc, so the first adjustment portion 1026112 is a part of a cylindrical structure, which can reduce the material used for the first bracket 102611, thereby reducing the cost of the optical device 102. Figure 6c In the first bracket 102611 shown, a square hole 10261121a is further provided at the center of the first adjustment portion 1026112, so that the first adjustment portion 1026112 can be adapted to a rotating tool having a square plug connector. Figure 6d In the first bracket 102611 shown, a hexagonal hole 10261121b is further provided at the center of the first adjustment portion 1026112, so that the first adjustment portion 1026112 can be adapted to a rotating tool having an external hexagonal plug connector. Figure 6e In the first bracket 102611 shown, the first adjustment portion 1026112 is provided with a cross-shaped hole 10261121c, which can be adapted to a rotating tool having a cross-shaped plug-in portion. Figure 6fIn the first bracket 102611 shown in the figure, the first adjusting portion 1026112 is provided with a straight hole 10261121d, which can be matched with a rotating tool having a straight plug-in portion. Figure 6g In the first bracket 102611 shown, the first adjustment portion 1026112 includes not only a cylindrical structure but also an outer hexagonal structure 10261121e disposed on the end surface of the cylindrical structure, so the first adjustment portion 1026112 can be adapted to a rotating tool having an inner hexagonal hole. On this basis, other deformation configurations of the first adjustment portion 1026112 of the first bracket 102611 should be understood to fall within the protection scope of the present application, and will not be described one by one here.

[0081] In the present application, the second wave splitter component 10262 can be configured with reference to the first wave splitter component 10261. Figure 7a and Figure 7b , Figure 7a and Figure 7b Several structural schematic diagrams of the second wave splitter assembly 10262 provided in the embodiment of the present application. The second wave splitter assembly 10262 includes a second bracket 102621 and a second filter assembly 102622. The second bracket 102621 and the second filter assembly 102622 are Figure 3 The tube body 1021 shown in the figure is rotatably connected, and the second filter assembly 102622 is arranged on the second bracket 102621. The second bracket 102621 can drive the second filter assembly 102622 to rotate during the rotation relative to the tube body 1021, thereby adjusting the angle of each filter in the second filter assembly 102622.

[0082] You can continue to refer to Figure 7a and Figure 7b The second bracket 102621 includes a second mounting portion 1026211 and a second adjusting portion 1026212 connected to each other, wherein the second mounting portion 1026211 can be set with reference to the first mounting portion 1026111, as long as it can meet the mounting requirements of the second filter assembly 102622. The second adjusting portion 1026212 can be set with reference to the first adjusting portion 1026112, and will not be described in detail here. In addition, Figure 3As shown, the tube body 1021 of the optical device 102 may also be provided with a second mounting hole 10212, and the second mounting hole 10212 is arranged adjacent to the first mounting hole 10211 along the axial direction of the tube body 1021. Then the second adjustment portion 1026212 may be installed in the second mounting hole 10212, so that the second bracket 102621 is installed in the second mounting hole 10212. In this way, during the preparation of the optical device, the second bracket 102621 may rotate relative to the tube body 1021 in the second mounting hole 10212, thereby driving the second filter assembly 102622 to rotate relative to the tube body 1021, so as to adjust the installation angle of the second filter assembly 102622.

[0083] In addition, in this application, the type of the rotating tool is not limited. For example, Figure 8 , Figure 8 A schematic diagram of a preparation process of an optical device provided in an embodiment of the present application. The rotating tool 2 may be, for example, an adjusting device such as a screwdriver, so that a suitable screwdriver may be selected according to the specific setting of the first adjusting portion 1026112 of the first bracket 102611 and the second adjusting portion 1026212 of the second bracket 102621 as described above, so that the first bracket 102611 and the second bracket 102621 are driven to rotate relative to the tube body by plugging the screwdriver with the first adjusting portion 1026112 or the second adjusting portion 1026212 and rotating the screwdriver.

[0084] In some other possible embodiments of the present application, the rotating tool 2 can also be an adjusting device with an adsorption function, such as a suction nozzle, so as to adsorb the first adjustment part 1026112 of the first bracket 102611 or the second adjustment part 1026212 of the second bracket 102621 through the adjusting device, and drive the first bracket 102611 and the second bracket 102621 to rotate relative to the tube body through the rotation of the adjusting device.

[0085] The above is merely an exemplary description of the rotating tool used in the present application to realize the rotation of the first bracket 102611 and the second bracket 102621 relative to the tube body 1021. Other rotating tools that can be used to drive the first bracket 102611 and the second bracket 102621 to rotate relative to the tube body 1021 should also be understood to fall within the scope of protection of the present application and will not be introduced one by one here.

[0086] From the above description of the first wave splitter assembly 10261 and the second wave splitter assembly 10262, it can be known that since the first filter assembly 102612 is arranged on the first bracket 102611 and the second filter assembly 102622 is arranged on the second bracket 102621, when the first bracket 102611 rotates relative to the tube body 1021, the first filter assembly 102612 can be driven to rotate relative to the tube body 1021, thereby adjusting the assembly angle of the first filter assembly 102612 in the tube body 1021. Similarly, when the second bracket 102621 rotates relative to the tube body 1021, the second filter assembly 102622 can be driven to rotate relative to the tube body 1021, thereby adjusting the assembly angle of the second filter assembly 102622 in the tube body 1021.

[0087] In the present application, the number of filters in the first filter assembly 102612 can be selected according to the requirements for the transmission and reflection of light. For example, Figure 4 In the optical device shown, the first filter assembly 102612 includes a first filter 1026121 and a second filter 1026122. The first filter 1026121 and the second filter 1026122 can be arranged on the mounting surface of the first bracket 102611, and the second filter 1026122 is arranged close to the optical interface 1024 relative to the first filter 1026121. In the process of preparing the optical device, the assembly angle of the first filter 1026121 and the second filter 1026122 can be adjusted by rotating the first bracket 102611.

[0088] In the embodiment of the present application, the first filter 1026121 is used to transmit light of the first wavelength band. The projection of the second filter 1026122 on the first tube cap 10222 of the first receiving package structure 1022 covers at least a portion of the first light receiving port 102221, and the second filter 1026122 is used to reflect the light of the first wavelength band transmitted by the first filter 1026121 to the first light receiving port 102221.

[0089] You can continue to refer to Figure 4 , the second filter assembly 102622 includes a third filter 1026221. The third filter 1026221 can be arranged on the mounting surface of the second bracket 102621. In this way, during the preparation of the optical device, the assembly angle of the third filter 1026221 can be adjusted by rotating the second bracket 102621, so that the third filter 1026221 is arranged toward the first filter 1026121, so that the third filter 1026221 can reflect the light received by the optical interface 1024 to the first filter 1026121.

[0090] It is understandable that in Figure 3 and Figure 4 In the optical device 102 shown, since the first wave splitter component 10261 is arranged close to the optical interface 1024 relative to the second wave splitter component 10262, in order to allow the light of the first band reflected by the second filter 1026122 to enter the first receiving packaging structure 1022, the first receiving packaging structure 1022 is arranged close to the optical interface 1024 relative to the second receiving packaging structure 1023.

[0091] In addition, in order to enable the light of the second wavelength band and the light of the third wavelength band received by the optical interface 1024 to enter the second receiving packaging structure 1023 through the second light receiving port 102321 of the second tube cap 10232, the optical device 102 provided in the present application also includes a fourth filter 10271, which can be continued to refer to Figure 4 , the fourth filter 10271 is arranged on the inner wall of the tube cavity of the tube body 1021. In the present application, the first filter 1026121 can also be used to reflect the light of the second wavelength band and the light of the third wavelength band to the fourth filter 10271, and the fourth filter 10271 can be used to reflect the light of the second wavelength band and the light of the third wavelength band to the second light receiving port 102321. In specific implementation, the projection of the fourth filter 10271 on the second tube cap 10232 of the second receiving package structure 1023 covers at least part of the second light receiving port 102321. Based on this, in the process of preparing the optical device, the first wave splitter assembly 10261 and the second wave splitter assembly 10262 can be rotated to enable the first filter 1026121 to reflect the light of the second wavelength band and the light of the third wavelength band to the fourth filter 10271, so that the fourth filter 10271 reflects the light of the second wavelength band and the light of the third wavelength band to the second light receiving port 102321.

[0092] In addition, you can continue to refer to Figure 4 A transmission filter 10272 may also be provided at the first light receiving port 102221 of the first receiving package structure 1022. The transmission filter 10272 may be used to transmit light in the first wavelength band; or it may allow light of a specific wavelength to pass through according to specific needs. For example, when the light in the first wavelength band includes light with a wavelength of 1284nm to 1288nm, the transmission filter 10272 may be used to allow a wavelength of 1286nm to pass through and enter the first receiving package structure 1022.

[0093] In the optical device 102 provided in the above embodiment of the present application, the light in the first wavelength band can be preferentially separated, which can effectively compress the overall size of the optical device 102 to meet the miniaturized design requirements of the optical device 102 .

[0094] It can be understood from the introduction of the design principle of the optical device 102 in the above text of this application that in the process of preparing the optical device 102, the assembly angle of the first splitter component 10261 and the second splitter component 10262 can be adjusted to achieve the splitting of the receiving light of three different bands. Based on this, in addition to being a single receiving package structure encapsulated with an optical receiving chip, the first receiving package structure 1022 can also be a two-in-one receiving package structure. Exemplarily, the first receiving package structure 1022 can be a 50G PON&10G PON receiving package structure, or the first receiving package structure 1022 is a 50G PON&GPON receiving package structure. The second receiving package structure 1023 can be a single package structure. In other words, the first optical receiving chip, the second optical receiving chip and the third optical receiving chip can be combined in any form and then packaged in the first receiving package structure 1022 and the second receiving package structure 1023. They are not listed one by one here, but they should all be understood to fall within the scope of protection of this application.

[0095] You can continue to refer to Figure 3 The optical device 102 provided in this embodiment of the present application further includes a first emission packaging structure 1028 and a second emission packaging structure 1029. The first emission packaging structure 1028 is installed at the other end of the tube body 1021, and the first emission packaging structure 1028 and the optical interface 1024 are located at two opposite ends of the tube body 1021. Among them, the first emission packaging structure 1028 is coaxially arranged with the tube body 1021, and the first emission packaging structure 1028 is coaxially arranged with the optical interface 1024. The second emission packaging structure 1029 is installed on the tube wall of the tube body 1021. In addition, the second emission packaging structure 1029 is located on the side of the second wave splitter 10262 away from the optical interface 1024.

[0096] The first emission packaging structure 1028 packages a first light emitting chip and a second light emitting chip ( Figure 3 (not shown), the first emission package structure 1028 may be a two-in-one emission package structure. Figure 4The first emission package structure 1028 further includes a third tube seat 10281 and a third tube cap 10282. The third tube cap 10282 is disposed on the third tube seat 10281. The third tube cap 10282 and the third tube seat 10281 form a third accommodation cavity. The third tube cap 10282 is installed on the tube body 1021 to achieve the installation of the first emission package structure 1028 and the tube body 1021. The first light emitting chip and the second light emitting chip are accommodated in the third accommodation cavity. The end of the third tube cap 10282 for connecting with the tube body 1021 includes a first light emitting port 102821. The first light emitting chip is used to emit light of the fourth wavelength band to the first light emitting port 102821. The second light emitting chip is used to emit light of the fifth wavelength band to the first light emitting port 102821. Among them, the light of the fourth band may exemplarily include light of 1340nm~1344nm, and the light of the fifth band may exemplarily include light of 1480nm~1490nm, then the first transmitting packaging structure 1028 is a GPON&50G PON two-in-one transmitting packaging structure.

[0097] The second emission packaging structure 1029 packages a third light emitting chip ( Figure 3 ), when implementing it, please continue to refer to Figure 4 The second emission package structure 1029 further includes a fourth tube seat 10291 and a fourth tube cap 10292. The fourth tube cap 10292 is disposed on the fourth tube seat 10291. The fourth tube cap 10292 and the fourth tube seat 10291 form a fourth accommodation cavity. The fourth tube cap 10292 is installed on the tube body 1021 to achieve the installation of the second emission package structure 1029 and the tube body 1021. The third light emitting chip is accommodated in the fourth accommodation cavity. The end of the fourth tube cap 10292 for connecting with the tube body 1021 includes a second light emitting port 102921. The third light emitting chip is used to emit light of the sixth wavelength band to the second light emitting port 102921. The light of the sixth wavelength band may exemplarily include light of wavelengths of 1575nm to 1580nm. Then, the second emission package structure 1029 may be a 10G PON emission package structure.

[0098] It is worth mentioning that, since in the above-mentioned optical device 102 , the emission light of 50G PON is transmitted along the main optical path of the optical device 102 , it is beneficial to the high-frequency characteristics of the optical device 102 , thereby helping to solve the problem of insufficient performance margin of the optical device 102 . In addition, the light of the fourth band may include light of 1340nm~1344nm, the light of the fifth band may exemplarily include light of 1575nm~1580nm, and the light of the sixth band may exemplarily include light of wavelengths of 1480nm~1490nm, then the first emission packaging structure 1028 may also be a 10G PON&50G PON two-in-one emission packaging structure, and the second emission packaging structure 1029 may also be a GPON emission packaging structure; alternatively, the light of the fourth band may include light of 1480nm~1490nm, the light of the fifth band may exemplarily include light of 1575nm~1580nm, and the light of the sixth band may exemplarily include light of wavelengths of 1340nm~1344nm, then the first emission packaging structure 1028 may also be a 10G PON&GPON two-in-one emission packaging structure, and the second emission packaging structure 1029 may also be a 50G PON emission packaging structure. In addition, the first light emitting chip, the second light emitting chip and the third light emitting chip can also be packaged in the first emission packaging structure 1028 and the second emission packaging structure 1029 in any other combination, which are not listed here. In addition, in the above embodiment of the present application, the first emission packaging structure 1028 is installed at one end of the tube body 1021, and in other possible embodiments of the present application, the first emission packaging structure 1028 can also be installed on the tube wall of the tube body 1021.

[0099] exist Figure 4 The optical device 102 shown in the figure further includes a second lens 1030, which is accommodated in the tube cavity of the tube body 1021, and is connected to the portion of the tube body 1021 used for connecting to the first emission package structure 1028, and the connection method thereof may be but is not limited to welding, bonding or clamping, so that the second lens 1030 is disposed adjacent to the first emission package structure 1028. In addition, the second lens 1030 is coaxially disposed with the first emission package structure 1028, so that the second lens 1030 can collimate the light emitted by the first emission package structure 1028, so that the light emitted by the first emission package structure 1028 can be transmitted to the outside of the optical device 102 through the optical interface 1024.

[0100] You can continue to refer to Figure 4, the optical device 102 may further include a first isolator 1031, which is accommodated in the tube cavity of the tube body 1021 and connected to the tube body 1021. The first isolator 1031 is coaxially arranged with the first emission package structure 1028, and the second lens 1030 is located between the first emission package structure 1028 and the first isolator 1031, and the second lens 1030 is arranged adjacent to the first isolator 1031. The first isolator 1031 may be used to reduce the light reflected from the optical device 102 to the first emission package structure 1028. It is worth mentioning that in some possible embodiments of the present application, the first isolator 1031 may also be located between the first emission package structure 1028 and the second lens 1030, which has no effect on the role played by the first isolator 1031 and the second lens 1030.

[0101] In addition, the optical device 102 may further include a second isolator 1032, which is accommodated in the tube cavity of the tube body 1021 and connected to a portion of the tube body 1021 used to connect to the second emission packaging structure 1029. The second isolator 1032 is coaxially arranged with the second emission packaging structure 1029, and the second isolator 1032 may be used to reduce the reflection of light in the optical device 102 to the second emission packaging structure 1029.

[0102] It is worth mentioning that in some possible embodiments of the present application, the first emission packaging structure 1028 and the second emission packaging structure 1029 may share the same isolator. In specific implementation, the second isolator 1032 may be omitted, and the first isolator 1031 may be moved toward the direction of the optical interface 1024, so that the first isolator 1031 separates the light emitting optical path and the light receiving optical path of the optical device 102, thereby reducing the number of components of the optical device 102 and reducing the cost of the optical device 102.

[0103] It can be understood that in the optical device 102 provided in the above embodiment of the present application, the light emitted by the first emission packaging structure 1028 can be directly transmitted to the optical interface 1024, so as to be transmitted to the outside of the optical device 102 through the optical interface 1024. Since the second emission packaging structure 1029 is arranged on the side of the tube body 1021, the transmission direction of the light emitted by the second emission packaging structure 1029 forms a certain angle with the axial direction of the optical interface 1024. In order to enable the light emitted by the second emission packaging structure 1029 to be transmitted to the optical interface 1024, the optical device 102 may further include a fifth filter 10273, which is arranged at the light emission port of the first emission packaging structure 1028, and the projection of the fifth filter 10273 on the second emission packaging structure 1029 covers at least part of the light emission port of the second emission packaging structure 1029. The fifth filter 10273 can be used to reflect the light emitted by the second emission package structure 1029 to the optical interface 1024. In addition, the fifth filter 10273 can also be used to allow the light emitted by the first emission package structure 1028 to pass through.

[0104] In the optical device 102 provided in the embodiment of the present application, the packaging of three optical receiving chips can be realized through the two receiving packaging structures of the first receiving packaging structure 1022 and the second receiving packaging structure 1023, so as to realize the reception of three different wavelength bands of light, which can be conducive to the miniaturization design of the optical device 102. And in the process of preparing the optical device 102, the adjustment of the assembly angle of multiple filters can be realized through the design of the first splitter component 10261 and the second splitter component 10262, which can effectively compress the adjustment tolerance of the three-way receiving light, thereby realizing the effective splitting of the three-way receiving light. In addition, the optical device 102 also realizes the packaging of three optical transmitting chips through the two receiving packaging structures of the first transmitting packaging structure 1028 and the second transmitting packaging structure 1029, so as to realize the emission of three non-passing wavelength bands of light. Therefore, the optical device 102 provided in the embodiment of the present application can simultaneously integrate three receiving optical paths and three transmitting optical paths, so as to realize the compatibility of three generations of network services, so as to realize the smooth upgrade of different generations of network services.

[0105] After understanding the structure of the optical device 102 provided in the embodiment of the present application and the principle that it can split the receiving optical paths of three different bands, the preparation method of the optical device 102 is briefly described below. Fig. 9 , Fig. 9 A schematic diagram of a method for preparing an optical device provided in an embodiment of the present application. To understand the method, please refer to Fig.10 , Fig.10 for Figure 4 A simplified structural diagram of the optical device 102 is shown in FIG. Fig.10The tube body is omitted. Then the preparation method may include the following steps:

[0106] Step S101: Fig.10 As shown, a light beam including light of a first wavelength band, light of a second wavelength band, and light of a third wavelength band may be introduced into the optical device 102 through the optical interface 1024;

[0107] Step S102: rotating at least one of the first wave splitting assembly 10261 and the second wave splitting assembly 10262 relative to the tube body 1021;

[0108] For specific implementation, please refer to Figure 3 and Figure 4 In the optical device 102 shown in FIG. 1 , in step S102, at least one of the first bracket 102611 and the second bracket 102621 can be rotated relative to the tube body 1021 by a rotating tool to adjust the assembly angles of the first filter 1026121, the second filter 1026122, and the third filter 1026221, thereby achieving the following: Fig.10 The angle α1 between the incident direction of the light beam shown in the figure and the reflection direction of the light beam reflected by the third filter 1026221, as well as the angle α2 of the light of the first wavelength band reflected by the second filter 1026122 are adjusted, so that the light of the first wavelength band can be transmitted to the first receiving package structure 1022. In addition, in the process of adjusting the first splitter assembly 10261 and the second splitter assembly 10262, the reflection angle of the first filter 1026121 to the light of the second wavelength band and the light of the third wavelength band can also be adjusted, so that the light of the second wavelength band and the light of the third wavelength band reflected by the first filter 1026121 can enter the second receiving package structure 1023.

[0109] In the embodiment of the present application, during the adjustment of the first bracket 102611 and the second bracket 102621, the acute angle between the plane where the first filter 1026121 is located and the plane perpendicular to the axis of the tube body 1021 can be made less than or equal to 25°, and the acute angle between the plane where the third filter 1026221 is located and the plane perpendicular to the axis of the tube body 1021 can be made less than or equal to 25°. This can reduce the spacing between the first splitter assembly 10261 and the second splitter assembly 10262 in all directions, thereby facilitating the reduction of the size of the optical device 102.

[0110] In addition, in the present application, the optical device 102 may include a fourth filter 10271, which can be used to reflect the light of the second band and the light of the third band to the second receiving packaging structure 1023. In the above step S102, while the first splitter component 10261 and the second splitter component 10262 are rotated relative to the tube body 1021, the setting position and setting angle of the fourth filter 10271 in the tube cavity of the tube body 1021 can also be adjusted, so that the light of the second band and the light of the third band reflected by the first filter 1026121 can enter the fourth filter 10271, so that the fourth filter 10271 can reflect the light of the second band and the light of the third band to the second receiving packaging structure 1023.

[0111] Step S103 : when it is detected that the first receiving package structure 1022 receives the light of the first wavelength band, and it is detected that the second receiving package structure 1023 receives the light of the second wavelength band and the light of the third wavelength band, the first splitter component 10261 and the second splitter component 10262 are fixed to the tube body 1021 .

[0112] It is worth mentioning that the present application does not limit the fixing method of the first wave splitter assembly 10261 and the second wave splitter assembly 10262 to the tube body 1021, and examples thereof may be bonding, welding, or fastener locking.

[0113] Based on the description of the structures of the first splitter assembly 10261 and the second splitter assembly 10262 and the light splitting principle thereof in the above embodiments of the present application, some adaptive deformations can be made to the configuration of the first splitter assembly 10261 and the second splitter assembly 10262. Fig.11 , Fig.11 This is a cross-sectional view of another structure of the optical device 102 provided in an embodiment of the present application. Figure 4 Compared with the optical devices shown, Fig.11 In the optical device 102 shown, the third filter 1026221 of the second wave splitter assembly 10262 is directly disposed on the inner wall of the tube cavity of the tube body 1021, that is, the second bracket 102621 is omitted. Fig.11 The first demultiplexing component 10261 of the optical device 102 shown in FIG. Figure 4 The optical device 102 shown is configured and will not be described in detail here.

[0114] Understandably, Fig.11 During the preparation of the optical device 102 shown, it is only necessary to rotate the first bracket 102611 of the first wave splitting component 10261 , which can effectively simplify the preparation steps of the optical device 102 . Fig.11 Other structures of the optical device 102 shown in FIG. Figure 4 In addition, in a possible embodiment of the present application, the first wave splitter assembly 10261 of the optical device 102 may not be provided with the first bracket 102611, while the second wave splitter assembly 10262 is provided with the second bracket 102621. In the process of preparing the optical device 102, it is only necessary to rotate the second bracket 102621 of the second wave splitter assembly 10262 to simplify the preparation steps of the optical device 102.

[0115] Based on the configuration of the optical device 102 provided in the above embodiment, in a possible embodiment of the present application, the second filter 1026122 of the first wave splitter assembly 10261 can be directly disposed on the inner wall of the lumen of the tube body 1021 in addition to being disposed on the first bracket 102611. On this basis, the optical device 102 provided in the embodiment of the present application can also be subjected to other possible deformations, which will not be introduced one by one here.

[0116] Reference Fig.12 , Fig.12 This is a cross-sectional view of another structure of the optical device 102 provided in an embodiment of the present application. Fig.12 In the optical device 102 shown, the optical device 102 includes a zblock component 10263 and a sixth filter 10264, wherein the sixth filter 10264 is arranged near the optical interface 1024 relative to the zblock component 10263, the zblock component 10263 is installed in the tube cavity of the tube body 1021, and during the preparation of the optical device 102, the zblock component 10263 can rotate relative to the tube body 1021 or move in any direction relative to the tube body 1021. The sixth filter 10264 can be arranged on the inner wall of the tube cavity of the tube body 1021, and the projection of the sixth filter 10264 on the first tube cap 10222 of the first receiving packaging structure 1022 covers at least part of the first light receiving port 102221.

[0117] In addition, Fig.12 Based on the structural design of the optical device 102 shown, some adaptive deformations can be made. For example, the optical device 102 can also include a third bracket, and the third bracket can be set with reference to the first bracket and the second bracket in the above embodiment, which will not be described in detail here. Then the sixth filter 10264 can be set on the third bracket, so that during the preparation process of the optical device 102, the angle of the sixth filter 10264 can be adjusted by rotating the third bracket to improve the accuracy of the light splitting of the optical device 102.

[0118] exist Fig.12In the optical device 102 shown, the zblock component 10263 is used to reflect the light of the first wavelength band received by the optical interface 1024 to the sixth filter 10264, and to reflect the light of the second wavelength band and the light of the third wavelength band received by the optical interface 1024 to the fourth filter 10271. In addition, the sixth filter 10264 is used to reflect the light of the first wavelength band reflected by the zblock component 10263 to the first light receiving port 102221 of the first tube cap 10222 of the first receiving package structure 1022.

[0119] In addition, the fourth filter 10271 of the optical device 102 can be used to reflect the light of the second wavelength band and the light of the third wavelength band reflected by the zblock component 10263 to the second light receiving port 102321 of the second tube cap 10232 of the second receiving package structure 1023. The fourth filter 10271 can be set with reference to the above embodiment, and will not be described in detail here.

[0120] exist Fig.12 In the optical device 102 shown, the multiple reflection characteristics of the zblock component 10263 can be used to realize its narrowband band-stop splitting function, so as to improve the splitting isolation performance of the optical device 102, thereby improving the splitting accuracy of the three-way received light of different wavelengths. It can effectively compress the adjustment tolerance of the three-way received light, thereby realizing effective splitting of the three-way received light.

[0121] Fig.12 Other structures of the optical device 102 shown in the figure can be arranged with reference to the optical device 102 provided in any of the above embodiments, and will not be described in detail here.

[0122] The light splitting method of the optical device 102 provided in the embodiment of the present application is not limited thereto, and those skilled in the art may make a series of modifications based on this, but they should all be understood to fall within the protection scope of the present application.

[0123] In addition, in the embodiment of the present application, in order to reduce the size of the optical device 102, the emission packaging structure of the optical device 102 may also include only the first emission packaging structure 1028, such as Fig.13 In the optical device 102 shown in FIG. 1 , the first emission packaging structure 1028 can simultaneously package the first light emitting chip, the second light emitting chip, and the third light emitting chip, which can effectively reduce the size of the optical device 102. It is worth mentioning that in Fig.13 In the optical device 102 shown, the first emission packaging structure 1028 may be a BOX packaging structure. In other possible embodiments, the first emission packaging structure 1028 may also be other possible forms of packaging structures, which are not listed here one by one. Fig.13Other structures of the optical device 102 shown in the figure can be arranged with reference to the optical device 102 provided in any of the above embodiments, and will not be described in detail here.

[0124] In addition, refer to Fig.14 , Fig.14 Another structural schematic diagram of the optical device 102 provided in an embodiment of the present application. The optical device 102 may include a first emission packaging structure 1028, a second emission packaging structure 1029, and a third emission packaging structure 1033. The first emission packaging structure 1028 is still disposed at the other end of the tube body 1021 and is coaxially disposed with the tube body 1021. The second emission packaging structure 1029 and the third emission packaging structure 1033 may be installed on the tube wall of the tube body 1021.

[0125] In addition, Fig.14 In the optical device 102 shown, the first emission packaging structure 1028 only packages the first light emitting chip, the second emission packaging structure 1029 packages the second light emitting chip, and the third emission packaging structure 1033 packages the third light emitting chip. The first emission packaging structure 1028, the second emission packaging structure 1029, and the third emission packaging structure 1033 are all single emission packaging structures, which can make the arrangement of each emission packaging structure more flexible while enabling the optical device 102 to integrate three receiving optical paths at the same time.

[0126] The optical device 102 provided in the embodiment of the present application can be applied to Figure 2 The optical module 1 shown can achieve compatibility with three generations of network services, since the optical device 102 provided in the present application can simultaneously integrate three receiving optical paths and three transmitting optical paths, so as to achieve a smooth upgrade of different generations of network services, thereby improving the compatibility of the optical module 1 with different generations of network services.

[0127] In addition, the optical device 102 provided in the embodiment of the present application can be applied to an optical network device, which can specifically be an optical line terminal 100 or an optical network unit 200. Since the optical device 102 provided in the present application can simultaneously integrate three receiving optical paths and three transmitting optical paths, it can achieve compatibility with three generations of network services, so as to achieve smooth upgrades of different generations of network services, thereby improving the compatibility of the optical network device with different generations of network services.

[0128] The optical device 102 and the optical module 1 provided in the embodiment of the present application can be applied to Figure 1In the optical communication system shown, specifically, the optical line terminal device 100 may include the above-mentioned optical device 102 or optical module 1, or the optical network unit 200 may include the above-mentioned optical device 102 or optical module 1. In the optical communication system provided by the present application, the optical line terminal device 100 is connected to multiple optical network units 200 in a point-to-multipoint form through a passive optical distribution network device 300. The optical line terminal device 100 and the optical network unit 200 can communicate using a TDM mechanism, a WDM mechanism, or a TDM / WDM hybrid mechanism. Among them, the direction from the optical line terminal device 100 to the optical network unit 200 is defined as the downlink direction, and the direction from the optical network unit 200 to the optical line terminal device 100 is the uplink direction.

[0129] The passive optical communication system may be a communication network that does not require any active devices to realize data distribution between the optical line terminal device 100 and the optical network unit 200. In a specific embodiment, the data distribution between the optical line terminal device 100 and the optical network unit 200 may be realized by a passive optical distribution network device 300. The passive optical communication system may be an asynchronous transfer mode passive optical network (ATM PON) system or a broadband passive optical network (BPON) system defined by the ITU-T G.983 standard, a gigabit passive optical network (GPON) system defined by the ITU-T G.984 series of standards, an Ethernet passive optical network (EPON) defined by the IEEE 802.3ah standard, a wavelength division multiplexing passive optical network (WDM PON) system, or a next generation passive optical network (NGA PON system, such as an XGPON system defined by the ITU-T G.987 series of standards, a 10GEPON system defined by the IEEE 802.3av standard, a TDM / WDM hybrid PON system, etc.). The entire contents of the various passive optical communication systems defined by the above standards are incorporated by reference in this application document.

[0130] The optical line terminal device 100 is usually located in a central location (e.g., a central office (CO)), which can uniformly manage multiple optical network units 200. The optical line terminal device 100 can act as a medium between the optical network unit 200 and the upper network (not shown), forwarding the data received from the upper network as downlink data to the optical network unit 200, and forwarding the uplink data received from the optical network unit 200 to the upper network. The specific structural configuration of the optical line terminal device 100 may vary depending on the specific type of the passive optical communication system. In one embodiment, the optical line terminal device 100 includes an optical device 102 and a data processing module (not shown), and the optical device 102 can convert the downlink data processed by the data processing module into a downlink optical signal, and send the downlink optical signal to the optical network unit 200 through the passive optical distribution network device 300, and receive the uplink optical signal sent by the optical network unit 200 through the passive optical distribution network device 300, and convert the uplink data signal into an electrical signal and provide it to the data processing module for processing.

[0131] The optical network unit 200 may be distributedly arranged at a user side location (such as a user premises). The optical network unit 200 may be a network device for communicating with the optical line terminal device 100 and the user. Specifically, the optical network unit 200 may act as a medium between the optical line terminal device 100 and the user. For example, the optical network unit 200 may forward the downlink data received from the optical line terminal device 100 to the user, and forward the data received from the user as uplink data to the optical line terminal device 100. The specific structural configuration of the optical network unit 200 may vary depending on the specific type of the passive optical communication system. In one embodiment, the optical network unit 200 includes an optical device 102, which is used to receive the downlink data signal sent by the optical line terminal device 100 through the passive optical distribution network device 300, and send the uplink data signal to the optical line terminal device 100 through the passive optical distribution network device 300.

[0132] The passive optical distribution network device 300 may be a data distribution system, which may include optical fibers, optical couplers, optical combiners / demultiplexers, optical splitters and / or other devices. In one embodiment, the optical fibers, optical couplers, optical combiners / demultiplexers, optical splitters and / or other devices may be passive optical devices. Specifically, the optical fibers, optical couplers, optical combiners / demultiplexers, optical splitters and / or other devices may be devices that do not require power support to distribute data signals between the optical line terminal device 100 and the optical network unit 200. In addition, in other embodiments, the passive optical distribution network device 300 may also include one or more processing devices, such as optical amplifiers or relay devices. In the example of Figure 1In the branching structure shown, the passive optical distribution network device 300 can specifically extend from the optical line terminal equipment 100 to multiple optical network units 200, but can also be configured into any other point-to-multipoint structure.

[0133] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An optical device, characterized in that: It includes a tube body, a first receiving packaging structure, a second receiving packaging structure and a first transmitting packaging structure, wherein: The first receiving packaging structure includes a first tube seat, a first tube cap and a first light receiving chip, wherein the first tube cap is arranged on the first tube seat, the first tube cap and the first tube seat form a first accommodating cavity, the first tube cap is installed on the tube body, and an end of the first tube cap used for connecting with the tube body includes a first light receiving port; the first light receiving chip is accommodated in the first accommodating cavity, and the first light receiving chip is used for receiving light of a first wavelength band from the first light receiving port; The second receiving packaging structure comprises a second tube seat, a second tube cap, a second light receiving chip and a third light receiving chip, wherein the second tube cap is arranged on the second tube seat, the second tube cap and the second tube seat form a second accommodating cavity, the second tube cap is mounted on the tube body, and an end of the second tube cap used for connecting with the tube body comprises a second light receiving port; the second light receiving chip and the third light receiving chip are accommodated in the second accommodating cavity, the second light receiving chip is used for receiving light of a second wavelength band from the second light receiving port, and the third light receiving chip is used for receiving light of a third wavelength band from the second light receiving port; The first emission packaging structure includes a third tube seat, a third tube cap, a first light emitting chip and a second light emitting chip, the third tube cap is arranged on the third tube seat, the third tube cap and the third tube seat form a third accommodating cavity, the third tube cap is installed on the tube body, and the end of the third tube cap used for connecting with the tube body includes a first light emitting port; the first light emitting chip and the second light emitting chip are accommodated in the third accommodating cavity, the first light emitting chip is used to emit light of a fourth band to the first light emitting port, and the second light emitting chip is used to emit light of a fifth band to the first light emitting port.

2. The optical device according to claim 1, characterized in that The first emission packaging structure further includes a third light emitting chip, the third light emitting chip is accommodated in the third accommodating cavity, and the third light emitting chip is used to emit light of a sixth wavelength band to the first light emitting port.

3. The optical device according to claim 1, characterized in that The optical device also includes a second emission packaging structure, which includes a fourth tube seat, a fourth tube cap and a third light emitting chip. The fourth tube cap is arranged on the fourth tube seat, and the fourth tube cap and the fourth tube seat form a fourth accommodating cavity. The fourth tube cap is installed on the tube body, and the end of the fourth tube cap used for connecting with the tube body includes a second light emitting port; the third light emitting chip is accommodated in the fourth accommodating cavity, and the third light emitting chip is used to emit light in the sixth band to the second light emitting port.

4. The optical device according to claim 2 or 3, characterized in that: The light of the fourth wavelength band includes light of wavelengths of 1340nm to 1344nm, the light of the fifth wavelength band includes light of wavelengths of 1480nm to 1490nm, and the light of the sixth wavelength band includes light of wavelengths of 1575nm to 1580nm; Or the light of the fourth wavelength band includes light of wavelengths of 1340nm to 1344nm, the light of the fifth wavelength band includes light of wavelengths of 1575nm to 1580nm, and the light of the sixth wavelength band includes light of wavelengths of 1480nm to 1490nm; Or the light of the fourth wavelength band includes light of wavelengths of 1480nm to 1490nm, the light of the fifth wavelength band includes light of wavelengths of 1575nm to 1580nm, and the light of the sixth wavelength band includes light of wavelengths of 1340nm to 1344nm.

5. The optical device according to any one of claims 1 to 4, characterized in that: The first tube cap of the first receiving packaging structure and the second tube cap of the second receiving packaging structure are installed on the tube wall of the tube body.

6. The optical device according to any one of claims 1 to 5, characterized in that: The third tube cap of the first emission packaging structure is installed on one end of the tube body, or the third tube cap of the first emission packaging structure is installed on the tube wall of the tube body.

7. The optical device according to any one of claims 1 to 6, characterized in that: The optical device further comprises an optical interface, which is installed at one end of the tube body and is used to receive light from outside the optical device.

8. The optical device according to claim 7, characterized in that: The optical device also includes a first wave splitter component and a second wave splitter component. Along the axial direction of the tube body, the first wave splitter component is arranged close to the optical interface relative to the second wave splitter component, and the first wave splitter component and the second wave splitter component are installed on the tube wall of the tube body; the second wave splitter component is used to reflect the light received by the optical interface to the first wave splitter component, the first wave splitter component is used to reflect the light of the first band reflected by the second wave splitter component to the first light receiving port of the first tube cap, and the first wave splitter component is used to reflect the light of the second band and the light of the third band reflected by the second wave splitter component to the second light receiving port of the second tube cap.

9. The optical device according to claim 8, characterized in that: The first wave splitter assembly includes a first bracket, a first filter and a second filter. The tube wall includes a first mounting hole. The first bracket is installed on the first mounting hole. The first filter is arranged on the first bracket. The first filter is used to transmit the light of the first wavelength band and to reflect the light of the second wavelength band and the light of the third wavelength band to the second light receiving port of the second tube cap. The second filter is arranged close to the optical interface relative to the first filter. The projection of the second filter on the first tube cap covers at least part of the first light receiving port. The second filter is used to reflect the light of the first wavelength band transmitted by the first filter to the first light receiving port.

10. The optical device according to claim 9, characterized in that: The second filter is arranged on the first bracket, or the second filter is arranged on the inner wall of the lumen of the tube body.

11. The optical device according to any one of claims 8 to 10, characterized in that: The second wave splitting component includes a second bracket and a third filter; The tube wall of the tube body also includes a second mounting hole, the first mounting hole and the second mounting hole are arranged adjacent to each other along the axial direction of the tube body, and the second bracket is installed on the second mounting hole; the third filter is arranged on the second bracket, and the third filter is used to reflect the light received by the optical interface to the first filter.

12. The optical device according to any one of claims 8 to 10, characterized in that: The second wave splitting component includes a third filter, which is arranged on the inner wall of the tube cavity of the tube body, and is used to reflect the light received by the optical interface to the first filter.

13. The optical device according to claim 11 or 12, characterized in that: The acute angle between the plane where the first filter is located and the plane perpendicular to the axis of the tube body is less than or equal to 25°; the acute angle between the plane where the third filter is located and the plane perpendicular to the axis of the tube body is less than or equal to 25°.

14. The optical device according to claim 7, characterized in that: The optical device comprises a zblock assembly and a sixth filter, and along the axial direction of the tube body, the sixth filter is arranged close to the optical interface relative to the zblock assembly; the zblock assembly is installed in the tube cavity of the tube body; the sixth filter is arranged on the inner wall of the tube cavity of the tube body, and the projection of the sixth filter on the first tube cap covers at least part of the first light receiving port; The zblock component is used to reflect the light of the first wavelength band received by the optical interface to the sixth filter, and is used to reflect the light of the second wavelength band and the light of the third wavelength band received by the optical interface to the second light receiving port of the second tube cap; the sixth filter is used to reflect the light of the first wavelength band reflected by the zblock component to the first light receiving port of the first tube cap.

15. The optical device according to any one of claims 7 to 14, characterized in that: Along the axial direction of the tube body, the first receiving packaging structure is arranged closer to the optical interface relative to the second receiving packaging structure.

16. The optical device according to any one of claims 1 to 15, characterized in that: The optical device also includes a fourth filter, which is arranged on the inner wall of the tube cavity of the tube body, and the projection of the fourth filter on the second tube cap covers at least a portion of the second light receiving port; the fourth filter is used to reflect the light of the second wavelength band and the light of the third wavelength band to the second light receiving port.

17. The optical device according to any one of claims 1 to 16, characterized in that: The light in the first waveband includes light with a wavelength of 1284nm to 1288nm; the light in the second waveband includes light with a wavelength of 1290nm to 1330nm; and the light in the third waveband includes light with a wavelength of 1260nm to 1280nm.

18. An optical module, characterized in that: It comprises a housing and the optical device according to any one of claims 1 to 17, wherein the optical device is accommodated in the housing, and the housing has an optical port, and the optical port is used to connect a communication optical cable.

19. An optical communication system, comprising an optical line terminal device and an optical network unit, wherein the optical line terminal device is connected to the optical network unit via a passive optical distribution network device, characterized in that: The optical line terminal equipment includes the optical device according to any one of claims 1 to 17 or the optical module according to claim 18, or the optical network unit includes the optical device according to any one of claims 1 to 17 or the optical module according to claim 18.

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