CN114384650B - Optical module - Google Patents
Optical module Download PDFInfo
- Publication number
- CN114384650B CN114384650B CN202011141725.4A CN202011141725A CN114384650B CN 114384650 B CN114384650 B CN 114384650B CN 202011141725 A CN202011141725 A CN 202011141725A CN 114384650 B CN114384650 B CN 114384650B
- Authority
- CN
- China
- Prior art keywords
- optical
- light
- jack
- face
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4246—Bidirectionally operating package structures
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4215—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being wavelength selective optical elements, e.g. variable wavelength optical modules or wavelength lockers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4274—Electrical aspects
- G02B6/428—Electrical aspects containing printed circuit boards [PCB]
Abstract
The application discloses an optical module, wherein a light emitting device and an optical fiber adapter are respectively connected to two opposite end surfaces of a tube body, and a first light receiving device and a second light receiving device are arranged on the adjacent third end surface and the adjacent first end surface. The optical module provided by the application has the advantages that the incidence angles and the optical paths are the same when signal lights at different positions perpendicular to the first end face pass through the first optical filter in the light emission process, and the incidence angles and the optical paths are different when the signal lights pass through the second optical filter; the incident angles and the optical paths of the signal lights at different positions parallel to the first end face are different when the signal lights pass through the first optical filter, and the incident angles and the optical paths of the signal lights are the same when the signal lights pass through the second optical filter, so that the influence of the first optical filter and the second optical filter on the signal lights is consistent, the generated aberration is the same, astigmatism is avoided, and the coupling efficiency is improved.
Description
Technical Field
The application relates to the technical field of communication, in particular to an optical module.
Background
The optical module realizes the function of photoelectric conversion in the technical field of optical fiber communication, and the intensity of an optical signal input into an external optical fiber by the optical module directly influences the quality of optical fiber communication. With the development of optical communication technology, the optical module of the optical line terminal is required TO meet higher power budget, and the power requirements on the front-end chip, the TO and the OSA component are also improved, so that the improvement of the coupling efficiency of the OSA component is particularly important for meeting the power requirements of the module end.
In the optical component product, a mode of inserting an optical filter into an optical path is generally adopted to realize a wave splitting function, but the optical filter is inserted into a non-parallel light path to split light, and aberration is introduced due to different incidence angles of light rays with different aperture positions on the surface of the optical filter and different optical paths, so that coupling efficiency is finally reduced.
Disclosure of Invention
The application provides an optical module for improving optical coupling efficiency in the optical module.
In order to solve the technical problems, the embodiment of the application discloses the following technical scheme:
the embodiment of the application discloses an optical module, which comprises: a circuit board;
the optical transceiver component is electrically connected with the circuit board and is used for transmitting and receiving optical signals;
wherein, the optical transceiver module includes:
the pipe body is provided with a first jack and a second jack at opposite ends respectively, a third jack is arranged at a third end of the pipe body, a fourth jack is arranged at a fourth end of the pipe body, and the third end and the fourth end are arranged at two adjacent ends of the pipe body;
the light emitting device is inserted into the first jack and is electrically connected with the circuit board and used for emitting light signals;
the optical fiber adapter is inserted into the second jack and used for receiving the optical signal emitted by the light emitting device;
the first optical filter is arranged between the first jack and the second jack, is perpendicular to the third end face, has an included angle of 45 degrees with the first end face, and is used for transmitting optical signals emitted by the light emitting device and reflecting the optical signals from the optical fiber adapter;
the second optical filter is arranged between the first optical filter and the second jack, forms an included angle of 45 degrees with the third end face and the second end face respectively, and is used for transmitting the optical signals emitted by the light emitting device and reflecting the optical signals from the optical fiber adapter;
the first light receiving device is inserted into the third jack and is electrically connected with the circuit board, and is used for receiving the optical signals reflected by the second optical filter;
the second light receiving device is inserted into the fourth jack and is electrically connected with the circuit board and used for receiving the optical signals reflected by the first optical filter.
Optionally, the thickness of the first optical filter is the same as that of the second optical filter.
Optionally, the thicknesses of the first optical filter and the second optical filter are 0.2mm.
Optionally, the optical fiber adapter includes an optical fiber ferrule, where the optical fiber ferrule is disposed in the second jack and is configured to receive an optical signal emitted by the light emitting device.
Optionally, the end face of the optical fiber ferrule is an inclined end face, and the inclined end face is inclined upwards from the second optical filter to the direction of the second jack, so that an incident light path and a reflecting light path of the end face of the optical fiber ferrule are different.
Optionally, an optical inlet is arranged at one end of the optical through hole, which is close to the first jack, and the optical through hole is communicated with the first jack through the optical inlet; and a light outlet is formed in one end, close to the first optical filter, of the first light through hole, and the size of the light inlet of the light through hole is larger than that of the light outlet.
Optionally, the central axis of the light through hole coincides with the central axis of the optical signal emitted by the light emitting device.
Optionally, the optical transceiver assembly further includes an adjusting ring, where the adjusting ring is disposed between the square tube body and the optical fiber adapter, and is used for adjusting a distance between the light emitting device and the optical fiber ferrule.
Compared with the prior art, the application has the beneficial effects that:
the application discloses an optical module, which is characterized in that a first jack and a second jack are respectively arranged at two opposite end surfaces of a pipe body, a third jack is arranged at a third end surface of the pipe body, a fourth jack is arranged at a fourth end surface of the pipe body, and the third end surface and the fourth end surface are two adjacent end surfaces of the pipe body. And the light emitting device is inserted into the first jack, is electrically connected with the circuit board and is used for emitting light signals. And the optical fiber adapter is inserted into the second jack and is used for receiving the optical signals emitted by the light emitting device. The first optical filter is arranged between the first jack and the second jack, is perpendicular to the third end face, and has an included angle of 45 degrees with the first end face, and is used for transmitting optical signals emitted by the light emitting device and reflecting optical signals from the optical fiber adapter. The second optical filter is arranged between the first optical filter and the second jack, forms an included angle of 45 degrees with the third end face and the second end face respectively, and is used for transmitting the optical signals emitted by the light emitting device and reflecting the optical signals from the optical fiber adapter. The first light receiving device is inserted into the third jack and is electrically connected with the circuit board, and the first light receiving device is used for receiving the optical signals reflected by the second optical filter. The second light receiving device is inserted into the fourth jack and is electrically connected with the circuit board and used for receiving the optical signals reflected by the first optical filter. The signal light emitted by the light emitting device sequentially passes through the first optical filter and the second optical filter and enters the light adapter. In the process, the incident angles and the optical paths of the signal lights at different positions perpendicular to the first end face are the same when the signal lights pass through the first optical filter, and the incident angles and the optical paths are different when the signal lights pass through the second optical filter; the incident angles and the optical paths of the signal lights at different positions parallel to the first end face are different when the signal lights pass through the first optical filter, and the incident angles and the optical paths of the signal lights are the same when the signal lights pass through the second optical filter, so that the influence of the first optical filter and the second optical filter on the signal lights is consistent, the generated aberration is the same, astigmatism is avoided, and the coupling efficiency is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
In order to more clearly illustrate the technical solution of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic diagram of a connection relationship between optical communication terminals according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an optical network terminal according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an optical module according to an embodiment of the present application;
fig. 4 is a schematic diagram of an exploded structure of an optical module according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an optical transceiver module according to an embodiment of the present application;
fig. 6 is an exploded view of an optical transceiver module according to an embodiment of the present application;
FIG. 7 is a schematic view of a pipe structure according to an embodiment of the present application;
fig. 8 is a schematic cross-sectional structure diagram of an optical transceiver module according to an embodiment of the present application;
fig. 9 is a schematic diagram of a cross-sectional structure of an optical transceiver module according to an embodiment of the present application;
fig. 10 is a first optical path diagram of an optical transmitting process of the optical transceiver module according to the embodiment of the present application;
FIG. 11 is a first optical path diagram of the optical receiving process of the optical transceiver component in the same direction as that of FIG. 10;
fig. 12 is a second optical path diagram of an optical transmitting process of the optical transceiver module according to the embodiment of the present application;
fig. 13 is a second optical path diagram of the optical receiving process of the optical transceiver module in the same direction as fig. 12.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
One of the key links of optical fiber communication is the mutual conversion of optical signals and electric signals. The optical fiber communication uses the optical signal carrying information to transmit in the information transmission equipment such as optical fiber/optical waveguide, and the information transmission with low cost and low loss can be realized by utilizing the passive transmission characteristic of the light in the optical fiber/optical waveguide; in order to establish an information connection between an information transmission device such as an optical fiber and an information processing device such as a computer, it is necessary to perform interconversion between an electric signal and an optical signal.
The optical module realizes the function of the mutual conversion of the optical signal and the electric signal in the technical field of optical fiber communication, and the mutual conversion of the optical signal and the electric signal is the core function of the optical module. The optical module is electrically connected with an external upper computer through a golden finger on an internal circuit board of the optical module, and main electrical connection comprises power supply, I2C signals, data information, grounding and the like; the electrical connection mode realized by the golden finger has become the mainstream connection mode of the optical module industry, and on the basis of the main connection mode, the definition of pins on the golden finger forms various industry protocols/specifications.
Fig. 1 is a schematic diagram of a connection relationship of an optical communication terminal. As shown in fig. 1, the connection of the optical communication terminal mainly includes the interconnection among the optical network terminal 100, the optical module 200, the optical fiber 101, and the network cable 103.
One end of the optical fiber 101 is connected with a remote server, one end of the network cable 103 is connected with local information processing equipment, and the connection between the local information processing equipment and the remote server is completed by the connection between the optical fiber 101 and the network cable 103; and the connection between the optical fiber 101 and the network cable 103 is made by the optical network terminal 100 having the optical module 200.
The optical port of the optical module 200 is externally connected to the optical fiber 101, and bidirectional optical signal connection is established with the optical fiber 101; the electrical port of the optical module 200 is externally connected into the optical network terminal 100, and bidirectional electrical signal connection is established with the optical network terminal 100; the optical module is internally provided with an optical module, and the optical module is internally provided with an optical signal and an electric signal, so that information connection between the optical fiber and the optical network terminal is established. Specifically, the optical signal from the optical fiber is converted into an electrical signal by the optical module and then input to the optical network terminal 100, and the electrical signal from the optical network terminal 100 is converted into an optical signal by the optical module and input to the optical fiber.
The optical network terminal is provided with an optical module interface 102, which is used for accessing the optical module 200 and establishing bidirectional electric signal connection with the optical module 200; the optical network terminal is provided with a network cable interface 104 which is used for accessing the network cable 103 and establishing bidirectional electric signal connection with the network cable 103; a connection is established between the optical module 200 and the network cable 103 through the optical network terminal 100. Specifically, the optical network terminal transmits a signal from the optical module to the network cable, transmits the signal from the network cable to the optical module, and monitors the operation of the optical module as an upper computer of the optical module.
So far, the remote server establishes a bidirectional signal transmission channel with the local information processing equipment through the optical fiber, the optical module, the optical network terminal and the network cable.
Common information processing apparatuses include routers, switches, electronic computers, and the like; the optical network terminal is an upper computer of the optical module, which provides data signals for the optical module and receives data signals from the optical module, and the common optical module upper computer also includes an optical line terminal and the like.
Fig. 2 is a schematic diagram of an optical network terminal structure. As shown in fig. 2, the optical network terminal 100 has a first circuit board 105, and a cage 106 is provided on a surface of the first circuit board 105; an electrical connector is arranged in the cage 106 and is used for accessing an optical module electrical port such as a golden finger; the cage 106 is provided with a radiator 107, and the radiator 107 has a convex portion such as a fin that increases a heat radiation area.
The optical module 200 is inserted into the optical network terminal 100, specifically, an electrical connector inside the cage 106 is inserted into an electrical port of the optical module, and the optical port of the optical module is connected to the optical fiber 101.
The cage 106 is positioned on the first circuit board, and the electrical connector on the first circuit board is wrapped in the cage, so that the electrical connector is arranged inside the cage; the light module is inserted into the cage, the light module is fixed by the cage, and the heat generated by the light module is conducted to the cage 106 and then diffused through the heat sink 107 on the cage.
Fig. 3 is a schematic structural diagram of an optical module provided by an embodiment of the present application, and fig. 4 is an exploded structural diagram of an optical module provided by an embodiment of the present application. As shown in fig. 3 and 4, the optical module 200 provided in the embodiment of the application includes an upper housing 201, a lower housing 202, an unlocking component 203, a circuit board 300, and an optical transceiver assembly 400.
The upper case 201 is covered on the lower case 202 to form a packing cavity having two openings; the outer contour of the wrapping cavity generally presents a square shape. Specifically, the lower housing 202 includes a main board and two side boards located at two sides of the main board and arranged perpendicular to the main board; the upper shell comprises a cover plate, and the cover plate covers the two side plates of the upper shell to form a wrapping cavity; the upper case may further include two sidewalls disposed at both sides of the cover plate and perpendicular to the cover plate, and the two sidewalls are combined with the two side plates to realize the covering of the upper case 201 on the lower case 202.
The two openings can be two ends openings (204, 205) in the same direction or two openings in different directions; one opening is an electric port 204, and a golden finger of the circuit board extends out of the electric port 204 and is inserted into an upper computer such as an optical network terminal; the other opening is an optical port 205, which is used for external optical fiber access to connect with the optical transceiver assembly 400 inside the optical module; the circuit board 300, the optical transceiver assembly 400, and other optoelectronic devices are located in the encapsulation cavity.
The upper shell and the lower shell are combined to be assembled, so that devices such as the circuit board 300, the optical transceiver assembly 400 and the like can be conveniently installed in the shells, and the upper shell and the lower shell form an encapsulation protection shell of the outermost layer of the module; the upper shell and the lower shell are made of metal materials, electromagnetic shielding and heat dissipation are realized, the shell of the optical module is not made into an integral part, and therefore, when devices such as a circuit board and the like are assembled, the positioning part, the heat dissipation and the electromagnetic shielding part cannot be installed, and the production automation is not facilitated.
The unlocking component 203 is located on the outer wall of the lower housing 202, and is used for realizing or releasing the fixed connection between the optical module and the host computer.
The unlocking part 203 is provided with a clamping part matched with the upper computer cage; pulling the end of the unlocking member can relatively move the unlocking member on the surface of the outer wall; the optical module is inserted into a cage of the upper computer, and the optical module is fixed in the cage of the upper computer by a clamping component of the unlocking component; the unlocking part is pulled, and the clamping part of the unlocking part moves along with the unlocking part, so that the connection relation between the clamping part and the upper computer is changed, the clamping relation between the optical module and the upper computer is relieved, and the optical module can be pulled out of the cage of the upper computer.
The circuit board 300 is provided with circuit wiring, electronic components (such as capacitor, resistor, triode, MOS tube) and chips (such as MCU, laser driving chip, limiting amplifying chip, clock data recovery CDR, power management chip, data processing chip DSP), etc.
The circuit board 300 connects the electrical devices in the optical module together according to a circuit design through circuit wiring, so as to realize electrical functions such as power supply, electrical signal transmission, grounding and the like.
The circuit board is generally a hard circuit board, and the hard circuit board can also realize bearing effect due to the relatively hard material of the hard circuit board, for example, the hard circuit board can stably bear chips; when the optical transceiver component is positioned on the circuit board, the hard circuit board can provide stable bearing; the hard circuit board can also be inserted into an electric connector in the upper computer cage, specifically, a metal pin/golden finger is formed on the end surface of one side of the hard circuit board and is used for being connected with the electric connector; these are all inconvenient to implement with flexible circuit boards.
A flexible circuit board is also used in part of the optical modules and is used as a supplement of the hard circuit board; the flexible circuit board is generally used in cooperation with the hard circuit board, for example, the hard circuit board and the optical transceiver assembly can be connected by using the flexible circuit board.
The optical transceiver component comprises two parts, namely a light emitting device and a light receiving device, which are respectively used for realizing the emission of optical signals and the reception of the optical signals. The optical transceiver module 400 in the optical module 200 includes an optical module for performing optical signal and electrical signal conversion, the optical module including: the light emitting device, the tube body, the light receiving device and the optical fiber adapter, one end of the light emitting device is connected with the circuit board 300, and the other end of the light emitting device is fixed in the tube body; the optical fiber adapter is fixed at the other end of the pipe body, and an optical signal emitted by the light emitting device enters an optical fiber core insert in the optical fiber adapter through the pipe body; the light receiving device is fixed at the third end of the tube body, the central axis of the light receiving device is generally perpendicular to the central axis of the light emitting device, and the optical signal emitted by the optical fiber insert core in the optical fiber adapter enters the light receiving device after being reflected by the optical filter in the tube body.
The optical transceiver assembly 400 further comprises an adjusting ring 406, the adjusting ring 406 is disposed between the square tube body and the optical fiber adapter 405, the adjusting ring 406 is screwed on the square tube body, and the distance between the light emitting device 401 and the optical fiber insert 4051 in the optical fiber adapter 405 can be adjusted through the adjusting ring 406.
Fig. 5 is a schematic structural diagram of an optical transceiver component according to an embodiment of the present application, and fig. 6 is an exploded structural diagram of an optical transceiver component according to an embodiment of the present application; fig. 7 is a schematic view of a tube structure according to an embodiment of the present application.
As shown in connection with fig. 5, 6 and 7, the optical transceiver module includes: a tube 402, a light emitting device 401, a light adapter 405. The tube body 402 is provided with a first jack 40211 and a second jack 40221 opposite to the first end face 4021 and the second end face 4022, and the light emitting device 401 is inserted into the first jack 40211 and electrically connected to the circuit board 300 for emitting light signals. The light emitting device 401 includes a condensing lens 4011, light emitted from the laser is divergent light, and after passing through the lens 4011, light of the condensed light beam is condensed, and a spot of the condensed light beam is gradually changed from a large spot to a small spot. The optical fiber adapter 405 is plugged into the second jack 40221 and is used for receiving the optical signal emitted by the light emitting device 401. The tube body 402 is used for realizing the fixed connection between the light emitting device 401 and the optical fiber adapter 405, the optical signal is transmitted into the optical fiber adapter 405 by the tube body 402, the optical fiber adapter 405 is internally provided with the optical fiber insert 4051, the optical fiber insert 4051 is an optical fiber wrapped by ceramic, and the optical fiber insert 4051 realizes the emission of the optical signal.
The end face of the optical fiber ferrule 4051 is an inclined end face, which is inclined upward from the first end face 4021 toward the second end face 4022 so that the incident light path of the end face of the optical fiber ferrule is different from the reflected light path.
The optical module provided in this embodiment realizes light emission and dual reception through the same optical fiber, so the optical transceiver module 400 further includes: a first light receiving device 403 and a second light receiving device 404. The third end surface 4023 of the pipe body 402 is provided with a third jack 40231, the fourth end surface 4024 is provided with a fourth jack 40241, and the third end surface 4023 and the fourth end surface 4024 are two adjacent end surfaces of the pipe body 402. The first light receiving device 403 is inserted into the third insertion hole 40231 and electrically connected to the circuit board 300. The second light receiving device 404 is inserted into the fourth insertion hole 40241 and electrically connected to the circuit board 300.
The optical signals converted by the electrical signals can be transmitted in the tube body 402 and emitted by the optical fiber ferrule 4051, and the optical signals transmitted by the optical fiber ferrule 4051 can be sent to the first optical receiving device 403 and the second optical receiving device 404 and converted into the electrical signals by the first optical receiving device 403 and the second optical receiving device 404. For this reason, the light emitting device 401, the first light receiving device 403, the second light receiving device 404, and the optical fiber adapter 405 are all fixed to the pipe body.
The pipe body 402 comprises a hollow square pipe body and a hollow round pipe body, and the square pipe body and the round pipe body are both provided with cavities. The circular tube body and the square tube body can be assembled together through welding, and in order to ensure the structural strength of the optical module, a circle of black glue is required to be smeared at the joint of the circular tube body and the square tube body for solidification in the specific assembly process.
The pipe body is fixed at the lateral wall of the side body of side, and the axis of the pipe body is perpendicular with the lateral wall of the side body of side, and the pipe body communicates with the side body of side. The circular tube body is connected with the light emitting device 401 in a nested way, the light emitting device 401 is arranged in the circular tube body, and the size of the circular tube body can be used for adjusting the distance between the light emitting device 401 and the optical fiber insert 4051 so as to meet the focal length requirement of converging light.
Fig. 8 is a schematic cross-sectional structure diagram of an optical transceiver module according to an embodiment of the present application; fig. 9 is a schematic diagram of a cross-sectional structure of an optical transceiver module according to an embodiment of the present application. A light-transmitting hole 4025 is arranged between the first jack 40211 of the tube body and the first optical filter 407, the light-transmitting hole is communicated with the first jack 40211, and a light signal emitted by the light emitting device 401 can be transmitted to the first optical filter 407 through the light-transmitting hole and coupled to the optical fiber insert 4051 through the first optical filter 407 and the first optical filter 408.
The light through hole provided in this example may have a tapered structure, that is, one end of the light through hole, which is close to the light emitting device 401, is provided with a light inlet, and the light through hole is communicated with the first jack 40211 through the light inlet; the light hole is close to one end of the first optical filter 407 and is provided with a light outlet, and the size of the light inlet is larger than that of the light outlet. The cross-sectional area of the inner wall of the light through hole is gradually reduced from the light inlet to the light outlet, so that the light through hole has a structure with one large end and one small end. In order to avoid the loss of the converging light beam emitted by the light emitting device 401 in the light passing hole, the central axis on the light emitting surface of the light passing hole coincides with the central axis of the light signal emitted by the light emitting device, so that the converging light beam is ensured to be incident to the optical fiber smoothly through the light passing hole.
The light emitted by the laser is divergent light, and after passing through the lens 4011, the light spots of the convergent light beams are gradually converted into small light spots from large light spots, the light inlet of the light passing hole is larger than the light outlet, the light inlet can accommodate the light beams with the large light spots to enter, and the small light spots are emitted from the light outlet. In the transition process from the light inlet to the light outlet, the light spot of the converging light beam is gradually reduced, the outer contour of the shape of the converging light beam is the same as the inner contour of the inner cavity of the light passing hole, so that most of the light waves converged by the lens 4011 can pass through the light passing hole, and no loss is generated to the light.
Fig. 8 and 9 are cross-sectional views of the optical transceiver at different angles, and in combination with fig. 8 and 9, in order to realize that the optical signal transmitted into the pipe body by the optical fiber ferrule 4051 is transmitted into the first optical receiving device 403 and the second optical receiving device 404, a first optical filter 407 and a second optical filter 408 are required to be disposed in the square pipe body. The first optical filter 407 and the second optical filter 408 are sequentially disposed between the light emitting device 401 and the optical fiber ferrule 4051. The first optical filter 407 is perpendicular to the third end surface 4023, and is installed at an angle of 45 ° with respect to the first end surface 4021. The second optical filter 408 is disposed between the first optical filter 407 and the second receptacle 40221, and forms an included angle of 45 ° with the third end surface 4023 and the second end surface 4022, and is configured to transmit the optical signal emitted by the light emitting device 401 and reflect the optical signal from the optical fiber adapter 405.
Fig. 10 is a first optical path diagram of an optical transmitting process of the optical transceiver module according to the embodiment of the present application, and fig. 11 is a first optical path diagram of an optical receiving process of the optical transceiver module in the same direction as that of fig. 10. As shown in fig. 10 and 11, in the present embodiment, the first optical filter 407 is perpendicular to the third end surface 4023, and the direction from the light emitting device 401 to the optical fiber ferrule 4051 is inclined, and the optical signal from the optical fiber adapter 405 enters the second light receiving device after being reflected by the first optical filter 407. In the process of transmitting the optical signal emitted by the light emitting device 401 through the first optical filter 407 and then entering the optical fiber ferrule 4051, the incident angles and the optical paths of the signal lights at different positions perpendicular to the first end face are the same when the signal lights pass through the first optical filter 407, and the incident angles and the optical paths of the signal lights at different positions parallel to the first end face are different when the signal lights pass through the first optical filter 407.
Fig. 12 is a second optical path diagram of an optical transmitting process of the optical transceiver module according to the embodiment of the present application, and fig. 13 is a second optical path diagram of an optical receiving process of the optical transceiver module in the same direction as that of fig. 12. As shown in fig. 12 and 13, in the present embodiment, the second optical filter 408 is perpendicular to the fourth end surface 4024, and the direction from the light emitting device 401 to the optical fiber ferrule 4051 is inclined, and the optical signal from the optical fiber adapter 405 enters the first light receiving device after being reflected by the second optical filter 408. In the process of transmitting the optical signal emitted by the light emitting device 401 through the second optical filter 408 and entering the optical fiber ferrule 4051, the incident angles and the optical paths of the signal lights at different positions perpendicular to the first end face are different when the signal lights pass through the second optical filter 408, and the incident angles and the optical paths of the signal lights at different positions parallel to the first end face are the same when the signal lights pass through the second optical filter 408.
The optical module provided by the embodiment of the application is characterized in that a first jack and a second jack are respectively arranged on two opposite end surfaces of a tube body, a third jack is arranged on a third end surface of the tube body, a fourth jack is arranged on a fourth end surface of the tube body, and the third end surface and the fourth end surface are two adjacent end surfaces of the tube body. And the light emitting device is inserted into the first jack, is electrically connected with the circuit board and is used for emitting light signals. And the optical fiber adapter is inserted into the second jack and is used for receiving the optical signals emitted by the light emitting device. The first optical filter is arranged between the first jack and the second jack, is perpendicular to the third end face, and has an included angle of 45 degrees with the first end face, and is used for transmitting optical signals emitted by the light emitting device and reflecting optical signals from the optical fiber adapter. The second optical filter is arranged between the first optical filter and the second jack, forms an included angle of 45 degrees with the third end face and the second end face respectively, and is used for transmitting the optical signals emitted by the light emitting device and reflecting the optical signals from the optical fiber adapter. The first light receiving device is inserted into the third jack and is electrically connected with the circuit board, and the first light receiving device is used for receiving the optical signals reflected by the second optical filter. The second light receiving device is inserted into the fourth jack and is electrically connected with the circuit board and used for receiving the optical signals reflected by the first optical filter. The signal light emitted by the light emitting device sequentially passes through the first optical filter and the second optical filter and enters the light adapter. In the process, the incident angles and the optical paths of the signal lights at different positions perpendicular to the first end face are the same when the signal lights pass through the first optical filter, and the incident angles and the optical paths are different when the signal lights pass through the second optical filter; the incident angles and the optical paths of the signal lights at different positions parallel to the first end face are different when the signal lights pass through the first optical filter, and the incident angles and the optical paths of the signal lights are the same when the signal lights pass through the second optical filter, so that the influence of the first optical filter and the second optical filter on the signal lights is consistent, the generated aberration is the same, astigmatism is avoided, and the coupling efficiency is improved. Since the foregoing embodiments are all described in other modes by reference to the above, the same parts are provided between different embodiments, and the same and similar parts are provided between the embodiments in the present specification. And will not be described in detail herein.
It should be noted that in this specification, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a circuit structure, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such circuit structure, article, or apparatus. Without further limitation, the statement "comprises" or "comprising" a … … "does not exclude that an additional identical element is present in a circuit structure, article or apparatus that comprises the element.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure of the application herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
The embodiments of the present application described above do not limit the scope of the present application.
Claims (9)
1. An optical module, comprising: a circuit board;
the optical transceiver component is electrically connected with the circuit board and is used for transmitting and receiving optical signals;
wherein, the optical transceiver module includes:
the first end face and the second end face which are opposite are respectively provided with a first jack and a second jack, the third end face is provided with a third jack, the fourth end face is provided with a fourth jack, and the third end face and the fourth end face are arranged at two adjacent end faces of the pipe body;
the light emitting device is inserted into the first jack and is electrically connected with the circuit board and used for emitting light signals;
the optical fiber adapter is inserted into the second jack and used for receiving the optical signal emitted by the light emitting device;
the first optical filter is arranged between the first jack and the second jack, is perpendicular to the third end face, has an included angle of 45 degrees with the first end face, and is used for transmitting the optical signals emitted by the light emitting device and reflecting part of the optical signals from the optical fiber adapter;
the second optical filter is arranged between the first optical filter and the second jack, forms an included angle of 45 degrees with the third end face and the second end face respectively, and is used for transmitting the optical signals emitted by the light emitting device and reflecting the optical signals from the optical fiber adapter;
the first light receiving device is inserted into the third jack and is electrically connected with the circuit board, and is used for receiving the optical signals reflected by the second optical filter;
the second light receiving device is inserted into the fourth jack and is electrically connected with the circuit board and used for receiving the optical signals reflected by the first optical filter.
2. The light module of claim 1 wherein the first filter is the same thickness as the second filter.
3. The optical module of claim 2, wherein the first filter and the second filter are each 0.2mm thick.
4. The optical module of claim 1, wherein a light through hole is disposed between the first jack and the second jack, the light through hole being in communication with the first jack.
5. The optical module of claim 1, wherein the fiber optic adapter includes a fiber stub disposed within the second receptacle for receiving the optical signal emitted by the light emitting device.
6. The optical module of claim 5, wherein the end face of the fiber stub is an angled end face that is angled upward from the second optical filter in the direction of the second receptacle such that an incident optical path and a reflected optical path of the fiber stub end face are different.
7. The optical module according to claim 1, wherein a light through hole is arranged between the first jack and the first optical filter, a light inlet is arranged at one end of the light through hole, which is close to the first jack, and the light through hole is communicated with the first jack through the light inlet; and a light outlet is formed in one end, close to the first optical filter, of the light through hole, and the size of the light inlet of the light through hole is larger than that of the light outlet.
8. The light module of claim 7 wherein the central axis of the light passing hole coincides with the central axis of the light signal emitted by the light emitting device.
9. The optical module of claim 5, wherein the optical transceiver assembly further comprises an adjustment ring disposed between the tube and the fiber optic adapter for adjusting a distance between the light emitting device and the fiber optic ferrule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011141725.4A CN114384650B (en) | 2020-10-22 | 2020-10-22 | Optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011141725.4A CN114384650B (en) | 2020-10-22 | 2020-10-22 | Optical module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114384650A CN114384650A (en) | 2022-04-22 |
| CN114384650B true CN114384650B (en) | 2023-09-15 |
Family
ID=81194846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011141725.4A Active CN114384650B (en) | 2020-10-22 | 2020-10-22 | Optical module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114384650B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009037174A (en) * | 2007-08-06 | 2009-02-19 | Sumitomo Electric Ind Ltd | Single-core bidirectional optical module |
| JP2009093041A (en) * | 2007-10-11 | 2009-04-30 | Sumitomo Electric Ind Ltd | Optical module |
| CN201273946Y (en) * | 2008-09-19 | 2009-07-15 | 飞康技术(深圳)有限公司 | Single fiber bi-direction three-terminal transceiving component arrangement |
| JP2011065150A (en) * | 2009-08-21 | 2011-03-31 | Sumitomo Electric Ind Ltd | Single-core bidirectional optical module |
| CN208488575U (en) * | 2018-07-24 | 2019-02-12 | 厦门市贝莱通信设备有限公司 | A kind of single fiber three-way BOSA component |
| CN110471148A (en) * | 2019-09-02 | 2019-11-19 | 青岛海信宽带多媒体技术有限公司 | A kind of optical module |
| CN110673278A (en) * | 2019-11-15 | 2020-01-10 | 深圳市亚派光电器件有限公司 | Optical transceiver |
| CN110806623A (en) * | 2019-11-15 | 2020-02-18 | 深圳市亚派光电器件有限公司 | Optical transceiver |
| CN111198420A (en) * | 2018-11-19 | 2020-05-26 | 中兴通讯股份有限公司 | Coupling position adjusting method and device, optical assembly, storage medium and single board |
| CN111239923A (en) * | 2020-02-11 | 2020-06-05 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN210775927U (en) * | 2019-10-22 | 2020-06-16 | 青岛海信宽带多媒体技术有限公司 | Optical module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4428274B2 (en) * | 2005-04-04 | 2010-03-10 | 住友電気工業株式会社 | Bidirectional optical module |
-
2020
- 2020-10-22 CN CN202011141725.4A patent/CN114384650B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009037174A (en) * | 2007-08-06 | 2009-02-19 | Sumitomo Electric Ind Ltd | Single-core bidirectional optical module |
| JP2009093041A (en) * | 2007-10-11 | 2009-04-30 | Sumitomo Electric Ind Ltd | Optical module |
| CN201273946Y (en) * | 2008-09-19 | 2009-07-15 | 飞康技术(深圳)有限公司 | Single fiber bi-direction three-terminal transceiving component arrangement |
| JP2011065150A (en) * | 2009-08-21 | 2011-03-31 | Sumitomo Electric Ind Ltd | Single-core bidirectional optical module |
| CN208488575U (en) * | 2018-07-24 | 2019-02-12 | 厦门市贝莱通信设备有限公司 | A kind of single fiber three-way BOSA component |
| CN111198420A (en) * | 2018-11-19 | 2020-05-26 | 中兴通讯股份有限公司 | Coupling position adjusting method and device, optical assembly, storage medium and single board |
| CN110471148A (en) * | 2019-09-02 | 2019-11-19 | 青岛海信宽带多媒体技术有限公司 | A kind of optical module |
| CN210775927U (en) * | 2019-10-22 | 2020-06-16 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN110673278A (en) * | 2019-11-15 | 2020-01-10 | 深圳市亚派光电器件有限公司 | Optical transceiver |
| CN110806623A (en) * | 2019-11-15 | 2020-02-18 | 深圳市亚派光电器件有限公司 | Optical transceiver |
| CN111239923A (en) * | 2020-02-11 | 2020-06-05 | 青岛海信宽带多媒体技术有限公司 | Optical module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114384650A (en) | 2022-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111239934B (en) | Optical module | |
| CN211603627U (en) | Optical module | |
| CN111474644A (en) | Optical module | |
| CN111239930A (en) | Optical module | |
| CN111239923A (en) | Optical module | |
| CN212083740U (en) | Optical module | |
| CN111007601A (en) | Optical module | |
| CN215181032U (en) | Optical module | |
| CN112965190A (en) | Optical module | |
| CN212031793U (en) | Optical module | |
| CN111458816A (en) | Optical module | |
| CN111061019A (en) | Optical module | |
| CN111458815A (en) | Optical module | |
| WO2022057621A1 (en) | Optical module | |
| WO2020248642A1 (en) | Optical module | |
| CN114384650B (en) | Optical module | |
| CN113534359A (en) | Optical module | |
| CN110989103A (en) | Optical module | |
| CN214795316U (en) | Optical module | |
| CN214278494U (en) | Optical module | |
| WO2021218462A1 (en) | Optical module | |
| CN212083739U (en) | Optical module | |
| CN113484960A (en) | Optical module | |
| CN113568112A (en) | Optical module | |
| CN111239932A (en) | Optical module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |