Optical device, optical module and optical communication system

Abstract

Provided in the present application are an optical device, an optical module and an optical communication system. The optical device provided in the present application comprises a tube body, and a first receiving encapsulation structure, a second receiving encapsulation structure and a first emitting encapsulation structure, which are installed on the tube body, wherein the first receiving encapsulation structure encapsulates a first light-receiving chip which is used for receiving light of a first wave band; the second receiving encapsulation structure encapsulates a second light-receiving chip which is used for receiving light of a second wave band, and a third light-receiving chip which is used for receiving light of a third wave band; and the first emitting encapsulation structure encapsulates a first light-emitting chip which is used for emitting light of a fourth wave band, and a second light-emitting chip which is used for emitting light of a fifth wave band. The optical device provided in the present application can integrates three receiving light paths together with three emitting light paths, and can realize the compatibility with regard to three generations of network services, so as to realize the smooth upgrade of different generations of network services, such that the compatibility of an optical module, to which the optical device is applied, and an optical communication system with regard to different generations of network services can be improved.

Description

Optical device, optical module and optical communication system

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on November 10, 2023, with application number 202311517131.2 and invention name "An optical device, optical module and optical communication system", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] 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

[0004] During the long evolution of passive optical networks (PON), GPON optical components and then 10G PON optical components have been commercialized, enabling the transition from 100M to 1G networks. During the GPON to 10G PON upgrade, industry vendors have effectively addressed the challenge of smooth transitions between GPON and 10G PON services by integrating the services of the two generations.

[0005] With the increasing demand for optical networks, there is a growing demand for 50G PON. As 50G PON standards become increasingly clear, it is likely to be commercialized in the near future. However, as optical devices currently compatible with both GPON and 10G PON services are upgraded to 50G PON, industry manufacturers are primarily focused on achieving compatibility between 10G PON and 50G PON services. However, a large number of GPON optical devices remain on the market, and their complete elimination is unlikely in the near future. Therefore, providing an optical device compatible with all three generations of GPON, 10G PON, and 50G PON services is a pressing challenge for those skilled in the art.

[0006] Summary of the Invention

[0007] 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 realizing smooth upgrades of different generations of PON services.

[0008] In a first aspect, the present application provides an optical device comprising a tube body, a first receiving package structure, a second receiving package structure, and a first transmitting package structure. The first receiving package structure comprises a first tube base, a first tube cap, and a first light receiving chip. The first tube cap is mounted on the first tube base, forming a first receiving cavity with the first tube base. The first tube cap is mounted on the tube body, and the end of the first tube cap for connection to the tube body includes a first light receiving port. The first light receiving chip is housed in the first receiving cavity and is configured to receive light of a first wavelength band from the first light receiving port. The second receiving package structure comprises a second tube base, a second tube cap, a second light receiving chip, and a third light receiving chip. The second tube cap is mounted on the second tube base, forming a second receiving cavity with the second tube base. The second tube cap is mounted on the tube body, and the end of the second tube cap for connection to the tube body includes a second light receiving port. The second and third light receiving chips are housed in the second receiving cavity. The second light receiving chip is configured to receive light of a second wavelength band from the second light receiving port, and the third light receiving chip is configured to receive light of a third wavelength band from the third light receiving port. The first light emitting package structure includes a third tube base, a third tube cap, a first light emitting chip, and a second light emitting chip. The third tube cap is mounted on the third tube base, and the third tube cap and the third tube base form a third receiving cavity. The third tube cap is mounted on the tube body, and the end of the third tube cap for connecting to the tube body includes a first light emitting port. The first light emitting chip and the second light emitting chip are housed in the third receiving cavity. The first light emitting chip is configured to emit light in a fourth wavelength band toward the first light emitting port, and the second light emitting chip is configured to emit light in a fifth wavelength band toward the first light emitting port.

[0009] The optical device provided in this application can simultaneously integrate three receiving optical paths and three transmitting optical paths, achieving compatibility with three generations of network services, enabling smooth upgrades between different generations of network services, and thereby improving the compatibility of optical modules and optical communication systems using the optical device with different generations of network services. Furthermore, because the optical device encapsulates three receiving chips using two receiving packaging structures—a first receiving packaging structure and a second receiving packaging structure—and encapsulates the first and second transmitting chips using a first transmitting packaging structure, it facilitates the miniaturization of the optical device.

[0010] To meet the optical device's requirement for three-way light emission, in one possible implementation of this application, the first emission packaging structure also includes a third light-emitting chip housed in a third cavity. The third light-emitting chip is configured to emit light in the sixth wavelength band toward the first light-emitting port. This design, by packaging three light-emitting chips within a single emission packaging structure, effectively improves the integration of the optical device, thereby facilitating its size reduction.

[0011] In another possible implementation of the present application, the optical device further includes a second emission packaging structure, which includes a fourth tube base, a fourth tube cap, and a third emission chip. The fourth tube cap is disposed on the fourth tube base, and the fourth tube cap and the fourth tube base form a fourth accommodating cavity. The fourth tube cap is mounted on the tube body, and the end of the fourth tube cap for connection to the tube body includes a second light emitting port. The third emission chip is accommodated in the fourth accommodating cavity and is configured to emit light in the sixth wavelength band toward the second light emitting port. With this design, three emission chips are encapsulated by the first emission packaging structure and the second emission packaging structure, which not only enables the optical device to emit three paths of light, but also helps to enhance the design flexibility of the optical device.

[0012] The present application does not specifically limit the frequency bands of the light emitted by each emitting chip, and they can be combined according to the specific design. For example, in one possible implementation, the light of the fourth wavelength band includes light with a wavelength of 1340nm to 1344nm, the light of the fifth wavelength band includes light with a wavelength of 1480nm to 1490nm, and the light of the sixth wavelength band includes light with a wavelength of 1575nm to 1580nm. Alternatively, in another possible implementation, the light of the fourth wavelength band includes light with a wavelength of 1340nm to 1344nm, the light of the fifth wavelength band includes light with a wavelength of 1575nm to 1580nm, and the light of the sixth wavelength band includes light with a wavelength of 1480nm to 1490nm. Or in another possible implementation, the light in the fourth band includes light with a wavelength of 1480nm to 1490nm, the light in the fifth band includes light with a wavelength of 1575nm to 1580nm, and the light in the sixth band includes light with a wavelength of 1340nm to 1344nm.

[0013] 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.

[0014] In one possible implementation of this application, the third cap of the first transmit package structure can be installed at one end of the tube body, aligning the axis of the first reflective package structure with the primary optical axis of the optical device. This allows the 50G PON transmit light to be transmitted along the primary optical axis of the optical device when the fourth or fifth wavelength band includes light with a wavelength of 1340nm to 1344nm, improving the high-frequency characteristics of the optical device.

[0015] In addition, the third tube cap of the first emission package structure can also be installed on the tube wall of the tube body to improve the installation flexibility of the optical device.

[0016] In one possible implementation of the present application, the optical device further includes an optical interface mounted at one end of the tube body and configured to receive light from outside the optical device. The light received by the optical interface includes light in a first wavelength band, light in a second wavelength band, and light in a third wavelength band.

[0017] 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 to 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 assembly and a second wave splitter assembly. Along the axial direction of the tube body, the first wave splitter assembly is arranged close to the optical interface relative to the second wave splitter assembly, and the first wave splitter assembly and the second wave splitter assembly are installed on the tube wall of the tube body. The second wave splitter assembly is used to reflect the light received by the optical interface to the first wave splitter assembly, the first wave splitter assembly is used to reflect the light of the first wavelength band reflected by the second wave splitter assembly to the first light receiving port of the first tube cap, and the first wave splitter assembly 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 assembly to the second light receiving port of the second tube cap.

[0018] When specifically setting up the first wave splitter assembly, in one 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 in the first mounting hole, and the first filter is mounted on the first bracket. The first filter is used to transmit light in the first wavelength band and to reflect light in the second wavelength band and light in the third wavelength band toward the second light receiving port of the second tube cap. The second filter is positioned relative to the first filter, closer to the optical interface, and the projection of the second filter on the first tube cap covers at least a portion of the first light receiving port, thereby allowing the second filter to reflect light in the first wavelength band transmitted by the first filter toward 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. This effectively reduces the adjustment tolerance of the three-way received light, thereby improving the optical device's splitting accuracy.

[0019] 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 spectroscopic effect of the optical device.

[0020] In one possible implementation of the present application, the second wave splitter assembly includes a second bracket and a third filter. The tube wall also includes a second mounting hole, with the first and second mounting holes arranged adjacent to each other along the axial direction of the tube, and the second bracket mounted to the second mounting hole. Furthermore, a third filter is mounted on the second bracket and is configured to reflect light received by the optical interface toward the first filter. Thus, during the optical device fabrication process, the assembly angle of the third filter can be adjusted by rotating the second bracket, thereby achieving effective splitting of the received light by the optical device.

[0021] The second wave splitter assembly can also be provided without the second bracket. In this case, the second wave splitter assembly only includes a third filter, which is disposed on the inner wall of the tube lumen of the tube body so as to reflect the light received by the optical interface toward the first filter. This effectively simplifies the structure of the optical device.

[0022] In one possible implementation of the present application, the acute angle between the plane on which the first filter resides and a plane perpendicular to the axis of the tube body is less than or equal to 25°; and the acute angle between the plane on which the third filter resides and a plane perpendicular to the axis of the tube body is less than or equal to 25°. This reduces the distance between the first and second wave splitting assemblies in all directions, thereby facilitating a reduction in the size of the optical device.

[0023] To achieve optical splitting of light received by the optical interface, in another possible implementation of the present application, the optical device further includes a zblock assembly and a sixth filter. The sixth filter is positioned axially along the tube body, relative to the zblock assembly, near the optical interface. The zblock assembly is mounted within the tube body's lumen, and the sixth filter is positioned on the inner wall of the tube body's lumen. The projection of the sixth filter on the first tube cap covers at least a portion of the first light receiving port. The zblock assembly is configured to reflect light in the first wavelength band received by the optical interface toward the sixth filter, and to reflect light in the second and third wavelength bands received by the optical interface toward the second light receiving port of the second tube cap. The sixth filter is configured to reflect light in the first wavelength band reflected by the zblock assembly toward the first light receiving port of the first tube cap. In this way, the multiple reflection characteristics of the zblock assembly can be utilized to achieve its narrowband band-stop splitting function, thereby improving the optical device's optical separation isolation performance and thereby enhancing the splitting accuracy of the three different wavelength bands of received light.

[0024] In one possible implementation of the present application, the first wavelength band includes light with a wavelength of 1284nm to 1288nm; the second wavelength band includes light with a wavelength of 1290nm to 1330nm; and the third wavelength band includes light with a wavelength of 1260nm to 1280nm. 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.

[0025] In one possible implementation of the present application, the first receiving package structure can be positioned closer to the optical interface than the second receiving package structure. Thus, when the light in the first wavelength band includes light in the range of 1284nm to 1288nm, the light in the first wavelength band can be preferentially separated, effectively reducing the overall size of the optical device to meet the requirements of miniaturized design of the optical device.

[0026] In one possible implementation of the present application, to allow light in the second wavelength band and light in the third wavelength band to enter the second receiving package structure through 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 lumen of the tube body, and its projection on the second tube cap covers at least a portion of the second light receiving port. The fourth filter is configured to reflect light in the second wavelength band and light in the third wavelength band toward the second light receiving port.

[0027] In a second aspect, the present application further provides an optical module comprising a housing and the optical device of the first aspect. The optical device is housed in the housing, and the housing has an optical port for connecting to a communication optical cable. The optical device can be connected to the communication optical cable via 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, thereby enabling smooth upgrades of different generations of network services.

[0028] In a third aspect, the present application further provides an optical communication system, comprising an optical line terminal device and an optical network unit (ONU), wherein the OLT is connected to the ONU via a passive distribution network device. The OLT comprises the optical device of the first aspect or the optical module of the second aspect, or the ONU 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, thereby enabling smooth upgrades between different generations of network services. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG1 is a schematic structural diagram of an optical communication system provided in an embodiment of the present application;

[0030] FIG2 is a schematic structural diagram of an optical module provided in an embodiment of the present application;

[0031] FIG3 is a schematic structural diagram of an optical device provided in an embodiment of the present application;

[0032] FIG4 is an AA cross-sectional view of the optical device shown in FIG3 ;

[0033] 5a to 5c are schematic diagrams of several structures of a first wave splitting component provided in an embodiment of the present application;

[0034] 6a to 6g are schematic structural diagrams of the first bracket shown in FIG5a at another angle;

[0035] 7a and 7b are schematic diagrams of several structures of a second wave splitting component provided in an embodiment of the present application;

[0036] FIG8 is a schematic diagram of a manufacturing process of an optical device provided in an embodiment of the present application;

[0037] FIG9 is a schematic diagram of a method for manufacturing an optical device provided in an embodiment of the present application;

[0038] FIG10 is a simplified structural diagram of the optical device shown in FIG4 ;

[0039] FIG11 is a cross-sectional view of another structure of an optical device provided in an embodiment of the present application;

[0040] FIG12 is a cross-sectional view of another structure of an optical device provided in an embodiment of the present application;

[0041] FIG13 is another schematic structural diagram of an optical device provided in an embodiment of the present application;

[0042] FIG14 is another schematic diagram of the structure of the optical device provided in an embodiment of the present application.

[0043] Reference numerals:

[0044] 100-Optical Line Terminal Equipment; 200-Optical Network Unit; 300-Passive Optical Distribution Network Device;

[0045] 1 - optical module; 101 - housing; 1011 - electrical port; 1012 - optical port; 102 - optical device; 1021 - tube body; 10211 - first mounting hole;

[0046] 10212 - second mounting hole; 1022 - first receiving packaging structure; 10221 - first tube base; 10222 - first tube cap;

[0047] 102221 - first light receiving port; 1023 - second receiving packaging structure; 10231 - second tube base; 10232 - second tube cap;

[0048] 102321 - second light receiving port; 1024 - optical interface; 1025 - first lens; 10261 - first wave splitting component; 102611 - first bracket;

[0049] 1026111-first mounting portion; 10261111-first mounting surface; 10261112-first supporting surface; 1026112-first adjusting portion;

[0050] 10261121a-square hole; 10261121b-hexagonal hole; 10261121c-cross hole; 10261121d-slotted hole;

[0051] 10261121e-external hexagonal structure; 102612-first filter assembly; 1026121-first filter; 1026122-second filter;

[0052] 10262-second splitter assembly; 102621-second bracket; 1026211-second mounting portion; 1026212-second adjustment portion;

[0053] 102622-second filter assembly; 1026221-third filter; 10263-zblock assembly; 10264-sixth filter;

[0054] 10271-fourth filter; 10272-transmission filter; 10273-fifth filter; 1028-first emission packaging structure;

[0055] 10281 - third tube base; 10282 - third tube cap; 102821 - first light emitting port; 1029 - second emission packaging structure;

[0056] 10291 - fourth tube base; 10292 - fourth tube cap; 102921 - second light emitting port; 1030 - second lens; 1031 - first isolator;

[0057] 1032 - second isolator; 1033 - third emission packaging structure; 103 - optical module driving circuit; 2 - rotating tool. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solutions 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 understood as being limited to the embodiments set forth herein. The same figure marks 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 explained with reference to the accompanying drawings as examples, but changes can be made as needed, and the changes made are all included in the scope of protection of the present application. The drawings in the embodiments of the present application are only used to illustrate the relative position relationship and do not represent the true proportion.

[0059] It should be noted that the following description sets forth specific details to facilitate understanding of the present application. However, the present application can be implemented in a variety of other ways than those described herein, and those skilled in the art may make similar generalizations without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0060] In order to facilitate understanding of the optical devices, optical modules and optical communication systems provided by this application, their application scenarios are first introduced below. With the development of communication technology, the use of optical signals to achieve signal transmission has become more and more widespread. Referring to Figure 1, Figure 1 is a structural schematic diagram of the optical communication system provided by 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. The passive optical distribution network device 300 can 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 through the passive optical distribution network device 300.

[0061] It is understood that an optical communication system may include multiple optical line terminal devices 100, and optical signals can be exchanged between the optical line terminal devices 100 connected by communication optical cables. In addition, each optical line terminal device 100 may include one or more optical modules 1, which may be installed on a single board of the optical line terminal device 100.

[0062] Referring to Figure 2, Figure 2 is a schematic diagram of the structure 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 driver circuit 103. The optical device 102 and the optical module driver circuit 103 are housed in the housing 101. The housing 101 includes an electrical port 1011 and an optical port 1012. The optical module driver circuit 103 is connected to the electrical port 1011, and the optical module driver circuit 103 is connected to the optical device 102. The optical port 1012 is used to connect to a communication optical cable, and the optical device 102 is connected to the communication optical cable through the optical port 1012.

[0063] In this optical module 1, the optical module driver circuit 103 provides electrical signals to the optical device 102. The optical device 102 converts the electrical signals into optical signals, which are then transmitted via a communication optical cable connected to the optical port 1012. Furthermore, the optical device 102 receives external optical signals through the optical port 1012, converts the received optical signals into electrical signals, and transmits them to the optical module driver circuit 103 for processing. Therefore, it can be seen that the optical device 102 is a key component in the optical module 1 that enables optical signal transmission.

[0064] Currently, in the PON field, to meet the ever-increasing demand for optical networks, there are optical device products compatible with both GPON and 10G PON services, as well as optical device products compatible with both 10G PON and 50G PON services. However, in the current market situation, a large number of GPON optical device products still exist and are unlikely to be completely phased out in the short term. This means that for a long time, GPON, 10G PON, and 50G PON services will coexist.

[0065] In view of this, the optical device provided in the embodiment of the present application simultaneously integrates three receiving optical paths and three transmitting optical paths to achieve compatibility with three generations of services: GPON, 10G PON and 50G PON, thereby realizing smooth upgrades of different generations of PON services.

[0066] Currently, optical device packaging primarily includes coaxial packaging, box packaging, and chip-on-board (COB) packaging. The transistor-outline (TO) package is the foundational packaging structure for coaxial-type optical sub-assemblies.

[0067] In this application, the packaging form of the optical device is not limited. In order for the optical device to simultaneously integrate three receiving optical paths and three transmitting optical paths, the optical device needs to integrate multiple packages. Taking the TO package as an example, the TO package generally 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.

[0068] In this application, the packaging structure including multiple LDs is referred to as an all-in-one transmitting packaging structure, and the packaging structure including multiple PDs is referred to as an all-in-one receiving packaging structure. For example, the packaging structure including two LDs can be referred to as a two-in-one transmitting packaging structure, and the packaging structure including two PDs can be referred to as a two-in-one receiving packaging structure.

[0069] It is understandable that integrating multiple LDs or multiple PDs into 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 the 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 with reference to the accompanying drawings.

[0070] Referring to Figure 3, Figure 3 is a schematic diagram of the structure 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 mounted 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 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 scope of protection of the present application.

[0071] In the optical device 102 shown in FIG3 , the first receiving package structure 1022 may be a single receiving package structure. When specifically configuring the first receiving package structure 1022, reference may be made to FIG4 , which is a cross-sectional view taken along line AA of the optical device 102 shown in FIG3 . The first receiving package structure 1022 may include a first tube base 10221, a first tube cap 10222, and a first optical receiving chip (not shown in FIG4 ). The first tube cap 10222 is disposed on the first tube base 10221, and the first tube cap 10222 and the first tube base 10221 form a first receiving cavity. The first tube cap 10222 is mounted on the tube wall of the tube body 1021, thereby achieving the installation of the first receiving package structure 1022 with the tube wall of the tube body 1021. The first optical receiver chip is accommodated in the first accommodating cavity. Furthermore, the end of the first tube cap 10222 for connection to the tube body 1021 includes a first light receiving port 102221. The first optical receiver chip can be configured to receive light in a first wavelength band from the first light receiving port 102221. Exemplarily, the light in the first wavelength band includes light with a wavelength of 1284 nm to 1288 nm, and the first receiver package structure 1022 is a 50G PON receiver package structure.

[0072] The second receiving package structure 1023 is a two-in-one receiving package structure that can encapsulate a second optical receiving chip and a third optical receiving chip (not shown in FIG. 4 ). In a specific implementation, the second receiving package structure 1023 also includes a second tube base 10231 and a second tube cap 10232. The second tube cap 10232 is disposed on the second tube base 10231. The second tube cap 10232 and the second tube base 10231 form a second accommodating cavity. The second tube cap 10232 is mounted on the tube wall of the tube body 1021, thereby achieving the installation of the second receiving package structure 1023 and the tube wall of the tube body 1021. The second optical receiving chip is accommodated in the aforementioned second accommodating cavity. In addition, the end of the second tube cap 10232 for connection to the tube body includes a second light receiving port 102321. The second optical receiving chip is used to receive light in the second wavelength band from the second light receiving port 102321, and the third optical receiving chip is used to receive light in 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&10G PON two-in-one receiving packaging structure.

[0073] Continuing with FIG3 , the optical device 102 may further include an optical interface 1024 connected to one end of the tube body 1021. The optical interface 1024 may be used to connect to a communication optical cable, thereby receiving light from outside the optical device 102 via the communication optical cable. It will be appreciated that, in order to ensure that the light received by the optical interface 1024 is transmitted along a predetermined 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 a specific implementation, continuing with FIG4 , the optical device 102 may include a first lens 1025 housed within the lumen of the tube body 1021 and connected to the portion of the tube body 1021 intended for connection to the optical interface 1024. The connection method may include, but is not limited to, welding, bonding, or snap-fitting, so that the first lens 1025 is positioned 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.

[0074] Since the light received by the optical interface 1024 includes light of multiple wavelength bands, in order to allow light of different wavelength bands to enter the corresponding receiving packaging structure according to the set optical path, the light of each wavelength band needs to be split. At present, the splitting of light of coaxial optical devices is mainly achieved by wavelength division multiplexing, that is, the light of each wavelength band is reflected and transmitted by multiple filters so that the light of each wavelength band can be transmitted according to a specific optical path, thereby achieving the purpose of splitting the light of each wavelength band. However, since the wavelengths of the light of each wavelength band are relatively close, the splitting spacing of the light of each wavelength band is small. In order to achieve effective splitting of the light of each wavelength 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. Therefore, 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. To overcome this problem, the optical device 102 provided in the embodiment of the present application incorporates an adjustable wave splitter assembly during its manufacturing process. This allows for adjustable assembly angles of multiple filters, thereby reducing filter assembly tolerances and achieving effective splitting of light across various wavelength bands. In a specific implementation, referring again to FIG. 4 , the optical device 102 provided in the present application further includes a first wave splitter assembly 10261 and a second wave splitter assembly 10262, which are mounted on the wall of the tube body 1021. In which, during the preparation of the optical device 102, the transmission direction of the first band of light, the second band of light and the third band of light received by the optical device 102 through the optical interface 1024 can be adjusted by rotating the first wave splitting component 10261 and the second wave splitting component 10262 relative to the tube body 1021, so that the first wave splitting component 10261 can reflect the first band of 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 of light and the third band of 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.

[0075] When specifically arranging the first wave splitting assembly 10261 and the second wave splitting assembly 10262 , in the optical device 102 shown in FIG. 3 , along the axial direction of the tube body 1021 , the first wave splitting assembly 10261 is arranged closer to the optical interface 1024 than the second wave splitting assembly 10262 .

[0076] Referring to Figure 5a, Figure 5a is a schematic structural diagram of a first wave splitter assembly 10261 provided in an embodiment of the present application. First wave splitter assembly 10261 includes a first bracket 102611 and a first filter assembly 102612. First bracket 102611 is mounted on tube body 1021 shown in Figure 3, and first filter assembly 102612 is disposed on first bracket 102611. During the fabrication of optical device 102, first bracket 102611 can be rotated relative to tube body 1021 to drive rotation of first filter assembly 102612, thereby adjusting the angles of the filters in first filter assembly 102612.

[0077] In the optical device 102 provided in the embodiment of the present application, the specific configuration of the first wave splitter assembly 10261 is not limited. The first bracket 102611 includes a first mounting portion 1026111 and a first adjustment portion 1026112 connected thereto. The first mounting portion 1026111 may be 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 may be a portion of a cylindrical rod, and the first mounting portion 1026111 and the first adjustment portion 1026112 may be coaxially arranged, as long as the first mounting portion 1026111 can rotate synchronously with the first adjustment portion 1026112. Furthermore, the first mounting portion 1026111 may include a first mounting surface 10261111, and the first filter assembly 102612 is mounted on the first mounting surface 10261111.

[0078] In addition, in the first wave splitting component 10261 shown in Figure 5a, 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.

[0079] Referring to Figure 5b , Figure 5b is another schematic structural diagram of the first wave splitter assembly 10261 provided in an embodiment of the present application, which can be used to illustrate another configuration method for the first mounting portion 1026111. Compared to the first wave splitter assembly 10261 shown in Figure 5a , the first mounting portion 1026111 of the first wave splitter assembly 10261 shown in Figure 5b only has the first supporting surface 10261112 corresponding to a portion of the first mounting surface 10261111, which effectively simplifies the structure of the first bracket 1026111.

[0080] As shown in FIG5 c , the first mounting portion 1026111 of the first splitter assembly 10261 is not provided with the first supporting surface 10261112 , so as to further simplify the structure of the first bracket 102611 .

[0081] The first splitter assembly 10261 shown in Figures 5a to 5c above is only an exemplary description of the arrangement of the first mounting portion 1026111 of the first bracket 102611. 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.

[0082] Referring to Figure 6a, Figure 6a is a schematic structural diagram of the first bracket 102611 shown in Figure 5a from another angle, illustrating the arrangement of the first adjustment portion 1026112. The first adjustment portion 1026112 may be cylindrical. Furthermore, referring to Figure 3, the tube body 1021 may be provided with a first mounting hole 10211, and the first adjustment portion 1026112 may be mounted in the first mounting hole 10211, thereby allowing the first bracket 102611 to be mounted in the first mounting hole 10211. Thus, during the optical device manufacturing process, the first bracket 102611 may rotate relative to the tube body 1021 within the first mounting hole 10211, thereby driving the first filter assembly 102612 to rotate relative to the tube body 1021, thereby adjusting the mounting angle of the first filter assembly 102612.

[0083] In the present application, in addition to the configuration shown in FIG6 a , the first adjustment portion 1026112 of the first bracket 102611 may also be configured in other possible configurations. For example, in the first bracket 102611 shown in FIG6 b , the cross-sectional shape of the first adjustment portion 1026112 includes an arc, and the arc is a major arc. Thus, the first adjustment portion 1026112 is part of a cylindrical structure, which can reduce the material used in the first bracket 102611 and thus reduce the cost of the optical device 102. For another example, in the first bracket 102611 shown in FIG6 c , a square hole 10261121a is further provided at the center of the first adjustment portion 1026112. This allows the first adjustment portion 1026112 to be compatible with a rotary tool having a square plug connector. For example, in the first bracket 102611 shown in FIG6d , the center of the first adjustment portion 1026112 is further provided with an inner hexagonal hole 10261121b, so that the first adjustment portion 1026112 can be compatible with a rotary tool having an outer hexagonal plug connector. For another example, in the first bracket 102611 shown in FIG6e , the first adjustment portion 1026112 is provided with a cross-shaped hole 10261121c, which can be compatible with a rotary tool having a cross-shaped plug connector. For another example, in the first bracket 102611 shown in FIG6f , the first adjustment portion 1026112 is provided with a straight hole 10261121d, which can be compatible with a rotary tool having a straight plug connector. For example, in the first bracket 102611 shown in FIG6g , the first adjustment portion 1026112 includes, in addition to the cylindrical structure, an external hexagonal structure 10261121e disposed on the end surface of the cylindrical structure. This allows the first adjustment portion 1026112 to be compatible with a rotary tool having an internal hexagonal hole. Based on this, other variations of the first adjustment portion 1026112 of the first bracket 102611 are understood to fall within the scope of protection of this application and are not described individually here.

[0084] In the present application, the second wave splitter assembly 10262 can be configured with reference to the first wave splitter assembly 10261. For example, referring to Figures 7a and 7b, Figures 7a and 7b are schematic diagrams of several structures of the second wave splitter assembly 10262 provided in embodiments 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 is rotatably connected to the tube body 1021 shown in Figure 3, and the second filter assembly 102622 is disposed on the second bracket 102621. The second bracket 102621 can drive the second filter assembly 102622 to rotate during its rotation relative to the tube body 1021, thereby adjusting the angles of the filters in the second filter assembly 102622.

[0085] Continuing with Figures 7a and 7b , the second bracket 102621 includes a second mounting portion 1026211 and a second adjustment portion 1026212 connected to each other. The second mounting portion 1026211 can be configured similarly to the first mounting portion 1026111, as long as it meets the mounting requirements of the second filter assembly 102622. The second adjustment portion 1026212 can be configured similarly to the first adjustment portion 1026112, and further details thereof are omitted here. Furthermore, as shown in Figure 3 , the tube body 1021 of the optical device 102 can also be provided with a second mounting hole 10212, which is arranged adjacent to the first mounting hole 10211 along the axial direction of the tube body 1021. The second adjustment portion 1026212 can then be mounted in the second mounting hole 10212, allowing the second bracket 102621 to be mounted in the second mounting hole 10212. In this way, during the preparation of the optical device, the second bracket 102621 can 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 to adjust the installation angle of the second filter assembly 102622.

[0086] In addition, in the present application, the type of rotating tool is not limited. For example, reference may be made to FIG8 , which is 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. In this way, an appropriate 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 described above, so that the screwdriver is plugged into the first adjusting portion 1026112 or the second adjusting portion 1026212, and the first bracket 102611 and the second bracket 102621 are driven to rotate relative to the tube body by rotating the screwdriver.

[0087] 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.

[0088] The above is merely an exemplary description of the rotating tool used in this 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 this application and will not be introduced one by one here.

[0089] As can be seen from the above description of the first wave splitter assembly 10261 and the second wave splitter assembly 10262, since the first filter assembly 102612 is disposed on the first bracket 102611 and the second filter assembly 102622 is disposed on the second bracket 102621, the rotation of the first bracket 102611 relative to the tube body 1021 can drive the first filter assembly 102612 to rotate relative to the tube body 1021, thereby adjusting the assembly angle of the first filter assembly 102612 within the tube body 1021. Similarly, the rotation of the second bracket 102621 relative to the tube body 1021 can drive the second filter assembly 102622 to rotate relative to the tube body 1021, thereby adjusting the assembly angle of the second filter assembly 102622 within the tube body 1021.

[0090] In the present application, the number of filters in the first filter assembly 102612 can be selected based on the requirements for light transmission and reflection. For example, in the optical device shown in Figure 4, 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 closer to the optical interface 1024 relative to the first filter 1026121. During the preparation of 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.

[0091] In the embodiment of the present application, the first filter 1026121 is configured to transmit light within a first wavelength band. The projection of the second filter 1026122 on the first cap 10222 of the first receiving package structure 1022 covers at least a portion of the first light receiving port 102221. The second filter 1026122 is configured to reflect the light within the first wavelength band transmitted by the first filter 1026121 back to the first light receiving port 102221.

[0092] Continuing with FIG4 , the second filter assembly 102622 includes a third filter 1026221. The third filter 1026221 can be mounted on the mounting surface of the second bracket 102621. Thus, during the optical device fabrication process, the assembly angle of the third filter 1026221 can be adjusted by rotating the second bracket 102621, so that the third filter 1026221 is positioned toward the first filter 1026121. This allows the third filter 1026221 to reflect light received by the optical interface 1024 toward the first filter 1026121.

[0093] It can be understood that in the optical device 102 shown in Figures 3 and 4, since the first wave splitting component 10261 is arranged close to the optical interface 1024 relative to the second wave splitting component 10262, in order to enable 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.

[0094] Furthermore, to allow the light in the second wavelength band and the light in the third wavelength band received by the optical interface 1024 to enter the second receiving package structure 1023 through the second light receiving port 102321 of the second tube cap 10232, the optical device 102 provided in the present application further includes a fourth filter 10271. Referring again to FIG. 4 , the fourth filter 10271 is disposed on the inner wall of the lumen of the tube body 1021. In the present application, the first filter 1026121 can also be used to reflect the light in the second wavelength band and the light in the third wavelength band toward the fourth filter 10271, which in turn can be used to reflect the light in the second wavelength band and the light in the third wavelength band toward the second light receiving port 102321. In a 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 a portion of the second light receiving port 102321. Based on this, during the preparation of the optical device, the first wave splitting component 10261 and the second wave splitting component 10262 can be rotated so that the first filter 1026121 can reflect the light of the second band and the light of the third band to the fourth filter 10271, thereby enabling the fourth filter 10271 to reflect the light of the second band and the light of the third band to the second light receiving port 102321.

[0095] In addition, referring to Figure 4, a transmission filter 10272 can also be provided at the first light receiving port 102221 of the first receiving package structure 1022. The transmission filter 10272 can be used to transmit light in the first wavelength band; or it can 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 can be used to allow a wavelength of 1286nm to pass through and enter the first receiving package structure 1022.

[0096] 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 miniaturization design requirements of the optical device 102.

[0097] As can be understood from the design principles of optical device 102 described above, during the fabrication of optical device 102, the assembly angles of first and second wave splitting assemblies 10261, 10262 can be adjusted to achieve splitting of three different wavelength bands of received light. Therefore, first receiving package structure 1022 can be a single receiving package structure encapsulating a single optical receiver chip, or a two-in-one receiving package structure. For example, first receiving package structure 1022 can be a 50G PON & 10G PON receiving package structure, or a 50G PON & GPON receiving package structure. Second receiving package structure 1023 can be a single package structure. In other words, the first, second, and third optical receiver chips can be combined in any manner and then packaged in the first and second receiving package structures 1022, 1023. While all of these combinations are not listed here, they should all be considered to fall within the scope of protection of this application.

[0098] Continuing with FIG3 , 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 mounted at the other end of the tube body 1021, and the first emission packaging structure 1028 and the optical interface 1024 are located at opposite ends of the tube body 1021. The first emission packaging structure 1028 is coaxially disposed with the tube body 1021, and the first emission packaging structure 1028 and the optical interface 1024 are coaxially disposed. The second emission packaging structure 1029 is mounted on the tube wall of the tube body 1021 and is located on a side of the second wave splitter assembly 10262 facing away from the optical interface 1024.

[0099] The first emission package structure 1028 encapsulates a first light emitting chip and a second light emitting chip (not shown in FIG3 ), and thus the first emission package structure 1028 can be a two-in-one emission package structure. In a specific implementation, referring to FIG4 , the first emission package structure 1028 also includes a third tube base 10281 and a third tube cap 10282 . The third tube cap 10282 is disposed on the third tube base 10281 , and the third tube cap 10282 and the third tube base 10281 form a third receiving cavity. The third tube cap 10282 is mounted on the tube body 1021 to facilitate the installation of the first emission package structure 1028 with the tube body 1021 . The first and second light emitting chips are housed in the third accommodating cavity. The end of the third tube cap 10282, which is connected to the tube body 1021, includes a first light emitting port 102821. The first light emitting chip is configured to emit light of the fourth wavelength band toward the first light emitting port 102821, and the second light emitting chip is configured to emit light of the fifth wavelength band toward the first light emitting port 102821. The light of the fourth wavelength band may exemplarily include light of 1340 nm to 1344 nm, and the light of the fifth wavelength band may exemplarily include light of 1480 nm to 1490 nm. Thus, the first transmitting package structure 1028 is a GPON & 50G PON two-in-one transmitting package structure.

[0100] The second emitter package structure 1029 encapsulates a third light emitting chip (not shown in FIG. 3 ). For specific implementations, referring to FIG. 4 , the second emitter package structure 1029 also includes a fourth tube base 10291 and a fourth tube cap 10292. The fourth tube cap 10292 is mounted on the fourth tube base 10291, forming a fourth receiving cavity with the fourth tube base 10291. The fourth tube cap 10292 is mounted on the tube body 1021 to facilitate the mounting of the second emitter package structure 1029 with the tube body 1021. The third light emitting chip is housed within the fourth receiving cavity. The end of the fourth tube cap 10292, which is connected to the tube body 1021, includes a second light emitting port 102921. The third light emitting chip is configured to emit light in the sixth wavelength band toward the second light emitting port 102921. Light in the sixth wavelength band may illustratively include light with a wavelength of 1575 nm to 1580 nm. Therefore, the second emitter package structure 1029 may be a 10G PON emitter package structure.

[0101] 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 in the fourth wavelength band may include light in the range of 1340nm to 1344nm, the light in the fifth wavelength band may exemplarily include light in the range of 1575nm to 1580nm, and the light in the sixth wavelength band may exemplarily include light in the range of 1480nm to 1490nm. In this case, 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 in the fourth wavelength band may include light in the range of 1480nm to 1490nm, the light in the fifth wavelength band may exemplarily include light in the range of 1575nm to 1580nm, and the light in the sixth wavelength band may exemplarily include light in the range of 1340nm to 1344nm. In this case, 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 may 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 mounted on one end of the tube body 1021. In other possible embodiments of the present application, the first emission packaging structure 1028 may also be mounted on the tube wall of the tube body 1021.

[0102] The optical device 102 shown in FIG4 further includes a second lens 1030. The second lens 1030 is housed within the lumen of the tube body 1021 and is connected to the portion of the tube body 1021 that is connected to the first emission package structure 1028. This connection may be by, but is not limited to, welding, gluing, or clamping, so that the second lens 1030 is positioned adjacent to the first emission package structure 1028. Furthermore, the second lens 1030 is coaxially disposed with the first emission package structure 1028 to collimate light emitted by the first emission package structure 1028, allowing the light emitted by the first emission package structure 1028 to be transmitted to the exterior of the optical device 102 through the optical interface 1024.

[0103] Continuing with FIG. 4 , the optical device 102 may further include a first isolator 1031, which is housed within the lumen of the tube body 1021 and connected to the tube body 1021. The first isolator 1031 is coaxially disposed with the first emission package structure 1028. The second lens 1030 is positioned between the first emission package structure 1028 and the first isolator 1031, and the second lens 1030 is adjacent to the first isolator 1031. The first isolator 1031 may be used to reduce light reflected from the optical device 102 to the first emission package structure 1028. It is worth noting that in some possible embodiments of the present application, the first isolator 1031 may be positioned between the first emission package structure 1028 and the second lens 1030, without affecting the functions of the first isolator 1031 and the second lens 1030.

[0104] In addition, the optical device 102 may further include a second isolator 1032, which is housed within the lumen of the tube body 1021 and connected to the portion of the tube body 1021 that is connected to the second emission package structure 1029. The second isolator 1032 is coaxially disposed with the second emission package structure 1029 and can be used to reduce reflection of light from the optical device 102 to the second emission package structure 1029.

[0105] It is worth noting that, in some possible embodiments of the present application, the first emission package structure 1028 and the second emission package structure 1029 can share the same isolator. In specific implementations, the second isolator 1032 can be omitted, and the first isolator 1031 can be moved toward the optical interface 1024 so that the first isolator 1031 separates the light emitting path and the light receiving path of the optical device 102. This can reduce the number of components in the optical device 102 and lower the cost of the optical device 102.

[0106] It is understood that in the optical device 102 provided in the above-described embodiment of the present application, the light emitted by the first emission package structure 1028 can be directly transmitted to the optical interface 1024, and then transmitted to the outside of the optical device 102 through the optical interface 1024. Since the second emission package structure 1029 is disposed on the side of the tube body 1021, the transmission direction of the light emitted by the second emission package 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 package structure 1029 to be transmitted to the optical interface 1024, the optical device 102 may further include a fifth filter 10273. The fifth filter 10273 is disposed at the light emission port of the first emission package structure 1028, and the projection of the fifth filter 10273 on the second emission package structure 1029 covers at least a portion of the light emission port of the second emission package 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.

[0107] In the optical device 102 provided in the embodiment of the present application, the two receiving packaging structures, namely the first receiving packaging structure 1022 and the second receiving packaging structure 1023, enable the packaging of three optical receiving chips, thereby enabling the reception of three paths of light in different wavelength bands. This facilitates the miniaturization of the optical device 102. Furthermore, during the manufacturing process of the optical device 102, the design of the first and second wave splitting assemblies 10261 and 10262 enables the adjustment of the assembly angles of multiple filters, effectively reducing the adjustment tolerance of the three paths of received light, thereby achieving effective splitting of the three paths of received light. Furthermore, the optical device 102 also utilizes the two receiving packaging structures, namely the first transmitting packaging structure 1028 and the second transmitting packaging structure 1029, to package three optical transmitting chips, thereby enabling the transmission of three paths of light in different wavelength bands. 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, thereby achieving compatibility with three generations of network services and enabling smooth upgrades of different generations of network services.

[0108] After understanding the structure of the optical device 102 provided in the embodiment of the present application and the principle by which it can split the receiving optical paths of three different bands, the following briefly describes the method for manufacturing the optical device 102. Referring to Figure 9, Figure 9 is a schematic diagram of a method for manufacturing the optical device provided in the embodiment of the present application. To understand the manufacturing method, refer to Figure 10, which is a simplified structural schematic diagram of the optical device 102 shown in Figure 4, in which the tube body is omitted. The manufacturing method may include the following steps:

[0109] Step S101: As shown in FIG10 , 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 ;

[0110] 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;

[0111] During specific implementation, reference may be made to the optical device 102 shown in Figures 3 and 4. In step S102, at least one of the first bracket 102611 and the second bracket 102621 may 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 adjustment of the angle α1 between the incident direction of the light beam as shown in Figure 10 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, so that the light of the first wavelength band can be transmitted to the first receiving packaging structure 1022. In addition, in the above-mentioned process of adjusting the first wave splitting component 10261 and the second wave splitting component 10262, the reflection angle of the first filter 1026121 to the light of the second band and the light of the third band 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 second receiving packaging structure 1023.

[0112] 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 on which 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 on which 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 distance between the first and second wave splitting assemblies 10261 and 10262 in all directions, thereby facilitating a reduction in the size of the optical device 102.

[0113] 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 wave splitting component 10261 and the second wave splitting 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.

[0114] Step S103 : When it is detected that the first receiving package structure 1022 receives light of the first wavelength band, and it is detected that the second receiving package structure 1023 receives light of the second wavelength band and light of the third wavelength band, the first and second wave splitting components 10261 and 10262 are fixed to the tube body 1021 .

[0115] It is worth mentioning that the present application does not limit the fixing method of the first wave splitting component 10261 and the second wave splitting component 10262 to the tube body 1021, and examples thereof may be bonding, welding, or fastener locking.

[0116] Based on the description of the structures of the first and second wave splitting assemblies 10261, 10262, and their light splitting principles in the above-mentioned embodiments of the present application, some adaptive variations can be made to the configuration of the first and second wave splitting assemblies 10261, 10262. For example, reference can be made to FIG11, which is a cross-sectional view of another structure of the optical device 102 provided in an embodiment of the present application. Compared to the optical device shown in FIG4 above, in the optical device 102 shown in FIG11, the third filter 1026221 of the second wave splitting assemblies 10262 is directly disposed on the inner wall of the lumen of the tube body 1021, i.e., the second bracket 102621 is omitted. Furthermore, the first wave splitting assemblies 10261 of the optical device 102 shown in FIG11 can be configured similarly to the optical device 102 shown in FIG4, and a detailed description thereof will not be given here.

[0117] It is understood that during the preparation process of the optical device 102 shown in FIG11 , only the first bracket 102611 of the first wave splitter assembly 10261 needs to be rotated, which can effectively simplify the preparation steps of the optical device 102. The other structures of the optical device 102 shown in FIG11 can be set with reference to the optical device 102 shown in FIG4 , and are not described in detail here. In addition, in a possible embodiment of the present application, the first wave splitter assembly 10261 of the optical device 102 can be provided without the first bracket 102611, while the second wave splitter assembly 10262 is provided with the second bracket 102621. In this case, during the preparation process of the optical device 102, only the second bracket 102621 of the second wave splitter assembly 10262 needs to be rotated, thereby simplifying the preparation steps of the optical device 102.

[0118] Based on the configuration of the optical device 102 provided in the above embodiment, in one possible embodiment of the present application, the second filter 1026122 of the first wave splitter assembly 10261 can be disposed not only on the first bracket 102611 but also directly on the inner wall of the lumen of the tube body 1021. Furthermore, the optical device 102 provided in the embodiment of the present application can also be subjected to other possible variations, which will not be described here one by one.

[0119] Referring to Figure 12, Figure 12 is a cross-sectional view of another structure of an optical device 102 provided in an embodiment of the present application. In the optical device 102 shown in Figure 12, the optical device 102 includes a zblock assembly 10263 and a sixth filter 10264. The sixth filter 10264 is positioned relative to the zblock assembly 10263 and adjacent to the optical interface 1024. The zblock assembly 10263 is mounted within the lumen of the tube body 1021. During the manufacturing process of the optical device 102, the zblock assembly 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 positioned on the inner wall of the lumen of the tube body 1021, and its projection on the first cap 10222 of the first receiving package structure 1022 covers at least a portion of the first light receiving port 102221.

[0120] Furthermore, based on the structural design of the optical device 102 shown in FIG. 12 , other adaptive modifications may be made. For example, the optical device 102 may further include a third bracket. The third bracket may be configured with reference to the first and second brackets in the above-described embodiment, and further description thereof is omitted here. The sixth filter 10264 may then be mounted on the third bracket. During the fabrication process of the optical device 102, the angle of the sixth filter 10264 may be adjusted by rotating the third bracket, thereby improving the accuracy of the light separation of the optical device 102.

[0121] In the optical device 102 shown in FIG12 , the zblock assembly 10263 is used to reflect light in the first wavelength band received by the optical interface 1024 toward the sixth filter 10264, and to reflect light in the second wavelength band and light in the third wavelength band received by the optical interface 1024 toward the fourth filter 10271. Furthermore, the sixth filter 10264 is used to reflect light in the first wavelength band reflected by the zblock assembly 10263 toward the first light receiving port 102221 of the first cap 10222 of the first receiving package structure 1022.

[0122] In addition, the fourth filter 10271 of the optical device 102 can be used to reflect the light in the second wavelength band and the light in the third wavelength band reflected by the zblock assembly 10263 to the second light receiving port 102321 of the second cap 10232 of the second receiving package structure 1023. The fourth filter 10271 can be configured with reference to the above embodiment and will not be described in detail here.

[0123] In optical device 102 shown in FIG12 , the multiple reflection characteristics of zblock assembly 10263 can be utilized to achieve narrowband band-stop splitting, thereby improving the optical isolation performance of optical device 102 and thereby enhancing the splitting accuracy of three different wavelength received light paths. This effectively reduces the adjustment tolerance of the three received light paths, thereby achieving effective splitting of the three received light paths.

[0124] Other structures of the optical device 102 shown in FIG. 12 may be configured with reference to the optical device 102 provided in any of the above embodiments, and will not be described in detail here.

[0125] 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 scope of protection of the present application.

[0126] 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 can also include only the first emission packaging structure 1028. For example, in the optical device 102 shown in FIG13, the first emission packaging structure 1028 can simultaneously encapsulate 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 the optical device 102 shown in FIG13, the first emission packaging structure 1028 can be a BOX packaging structure. In other possible embodiments, the first emission packaging structure 1028 can also be other possible packaging structures, which are not listed here one by one. The other structures of the optical device 102 shown in FIG13 can be configured with reference to the optical device 102 provided in any of the above embodiments, and are not described in detail here.

[0127] In addition, referring to Figure 14 , Figure 14 is a schematic diagram of another structure of an optical device 102 provided in an embodiment of the present application. Optical device 102 may include a first emission packaging structure 1028, a second emission packaging structure 1029, and a third emission packaging structure 1033. First emission packaging structure 1028 is still disposed at the other end of tube body 1021 and is coaxial with tube body 1021. Second emission packaging structure 1029 and third emission packaging structure 1033 may be mounted on the tube wall of tube body 1021.

[0128] Furthermore, in the optical device 102 shown in FIG14 , the first emission package structure 1028 encapsulates only the first light emitting chip, the second emission package structure 1029 encapsulates the second light emitting chip, and the third emission package structure 1033 encapsulates the third light emitting chip. Thus, the first emission package structure 1028, the second emission package structure 1029, and the third emission package structure 1033 are all single-emission package structures. This allows optical device 102 to simultaneously integrate three receiving optical paths while also providing greater flexibility in the configuration of each emission package structure.

[0129] The optical device 102 provided in the embodiment of the present application can be applied to the optical module 1 shown in Figure 2. 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 to achieve smooth upgrades of different generations of network services, thereby improving the compatibility of the optical module 1 with different generations of network services.

[0130] 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, thereby achieving smooth upgrades of different generations of network services, thereby improving the compatibility of the optical network device with different generations of network services.

[0131] The optical device 102 and optical module 1 provided in the embodiments of the present application can be applied to the optical communication system shown in Figure 1. 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 in the present application, the optical line terminal device 100 is connected to multiple optical network units 200 in a point-to-multipoint manner through a passive optical distribution network device 300. Communication between the optical line terminal device 100 and the optical network unit 200 can be carried out using a TDM mechanism, a WDM mechanism, or a TDM / WDM hybrid mechanism. 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 defined as the uplink direction.

[0132] The passive optical communication system can be a communication network that does not require any active devices to achieve 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 can be achieved through a passive optical distribution network device 300. The passive optical communication system can 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 (NGAPON system, such as the XGPON system defined by the ITU-T G.987 series of standards, the 10G EPON system defined by the IEEE 802.3av standard, a TDM / WDM hybrid PON system, etc.). The entire contents of various passive optical communication systems defined in the above standards are incorporated into this application document by reference.

[0133] The optical line terminal device 100 is typically located in a central location (e.g., a central office (CO)), which can centrally 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 data received from the upper network as downlink data to the optical network unit 200, and forwarding 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 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). 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.

[0134] The optical network unit 200 can be distributed and arranged at a user-side location (such as a user premises). The optical network unit 200 can be a network device used to communicate with the optical line terminal device 100 and the user. Specifically, the optical network unit 200 can act as an intermediary between the optical line terminal device 100 and the user. For example, the optical network unit 200 can forward downlink data received from the optical line terminal device 100 to the user, and forward 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 passive optical communication system. In one embodiment, the optical network unit 200 includes an optical device 102, which is used to receive downlink data signals sent by the optical line terminal device 100 via the passive optical distribution network device 300, and to send uplink data signals to the optical line terminal device 100 via the passive optical distribution network device 300.

[0135] The passive optical distribution network device 300 can be a data distribution system, which may include optical fibers, optical couplers, optical multiplexers / demultiplexers, optical splitters, and / or other devices. In one embodiment, the optical fibers, optical couplers, optical multiplexers / demultiplexers, optical splitters, and / or other devices can be passive optical devices. Specifically, the optical fibers, optical couplers, optical multiplexers / demultiplexers, optical splitters, and / or other devices can be devices that do not require power 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 can also include one or more processing devices, such as optical amplifiers or relay devices. In the branching structure shown in Figure 1, the passive optical distribution network device 300 can specifically extend from the optical line terminal device 100 to multiple optical network units 200, but can also be configured into any other point-to-multipoint structure.

[0136] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An optical device, characterized in that, It includes a tube body, a first receiving package structure, a second receiving package structure, and a first transmitting package structure, where: The first receiving package structure includes a first base, a first cap, and a first optical receiving chip. The first cap is disposed on the first base, and the first cap and the first base form a first receiving cavity. The first cap is installed on the tube body, and the end of the first cap for connecting to the tube body includes a first light receiving port. The first optical receiving chip is received in the first receiving cavity, and the first optical receiving chip is used to receive light of a first wavelength band from the first light receiving port; The second receiving package structure includes a second base, a second cap, a second optical receiving chip, and a third optical receiving chip. The second cap is disposed on the second base, and the second cap and the second base form a second receiving cavity. The second cap is installed on the tube body, and the end of the second cap for connecting to the tube body includes a second light receiving port. The second optical receiving chip and the third optical receiving chip are received in the second receiving cavity. The second optical receiving chip is used to receive light of a second wavelength band from the second light receiving port, and the third optical receiving chip is used to receive light of a third wavelength band from the second light receiving port; The first transmitting package structure includes a third base, a third cap, a first optical transmitting chip, and a second optical transmitting chip. The third cap is disposed on the third base, and the third cap and the third base form a third receiving cavity. The third cap is installed on the tube body, and the end of the third cap for connecting to the tube body includes a first light transmitting port. The first optical transmitting chip and the second optical transmitting chip are received in the third receiving cavity. The first optical transmitting chip is used to emit light of a fourth wavelength band to the first light transmitting port, and the second optical transmitting chip is used to emit light of a fifth wavelength band to the first light transmitting port.

2. The optical device according to claim 1, wherein, The first transmitting package structure further includes a third optical transmitting chip. The third optical transmitting chip is received in the third receiving cavity, and the third optical transmitting chip is used to emit light of a sixth wavelength band to the first light transmitting port.

3. The optical device according to claim 1, characterized in that, The optical device further includes a second transmitting package structure. The second transmitting package structure includes a fourth base, a fourth cap, and a third optical transmitting chip. The fourth cap is disposed on the fourth base, and the fourth cap and the fourth base form a fourth receiving cavity. The fourth cap is installed on the tube body, and the end of the fourth cap for connecting to the tube body includes a second light transmitting port. The third optical transmitting chip is received in the fourth receiving cavity, and the third optical transmitting chip is used to emit light of a sixth wavelength band to the second light transmitting port.

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

5. The optical device according to any one of claims 1 to 4, characterized in that, The first cap of the first receiving package structure and the second cap of the second receiving package 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 cap of the first transmitting package structure is installed at one end of the tube body, or the third cap of the first transmitting package 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 includes an optical interface, which is installed at one end of the tube body, and the optical interface is used to receive light from outside the optical device.

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

9. The optical device according to claim 8, characterized in that, The first wavelength division component includes a first bracket, a first filter and a second filter. The tube wall includes a first mounting hole, the first bracket is installed in the first mounting hole, the first filter is arranged on the first bracket, and the first filter is used to transmit the light of the first band and reflect the light of the second band and the light of the third band to the second light receiving port of the second cap; the second filter is arranged closer to the optical interface than the first filter, and the projection of the second filter on the first cap covers at least part of the first light receiving port, and the second filter is used to reflect the light of the first 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 wavelength division component includes a second bracket and a third filter; The tube wall of the tube body further 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 in 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 wavelength division component includes a third filter, and the third filter is disposed on the inner wall of the lumen of the tube body, and the third filter is configured 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, wherein The optical device includes a zblock component and a sixth filter. Along the axial direction of the tube body, the sixth filter is disposed closer to the optical interface than the zblock component; the zblock component is installed in the lumen of the tube body; the sixth filter is disposed on the inner wall of the lumen of the tube body, and the projection of the sixth filter on the first tube cap covers at least a part of the first light receiving port. The zblock component is configured to reflect the light of the first wavelength band received by the optical interface to the sixth filter, and is configured 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 configured 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 and packaging structure is disposed closer to the optical interface than the second receiving and packaging structure.

16. The optical device according to any one of claims 1 to 15, characterized in that, The optical device further includes a fourth filter, and the fourth filter is disposed on the inner wall of the lumen of the tube body, and the projection of the fourth filter on the second tube cap covers at least a part of the second light receiving port; the fourth filter is configured 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 of the first wavelength band includes light with a wavelength of 1284 nm to 1288 nm; the light of the second wavelength band includes light with a wavelength of 1290 nm to 1330 nm; the light of the third wavelength band includes light with a wavelength of 1260 nm to 1280 nm.

18. An optical module, characterized in that, It includes a housing and the optical device according to any one of claims 1 to 17, the optical device is accommodated in the housing, and the housing has an optical port for connecting a communication optical cable.

19. An optical communication system, the optical communication system comprising an optical line terminal device and an optical network unit, the optical line terminal device being connected to the optical network unit through a passive optical distribution network device, characterized in that, The optical line terminal device 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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