CN110456467A - A kind of optical module - Google Patents
A kind of optical module Download PDFInfo
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- CN110456467A CN110456467A CN201910860903.XA CN201910860903A CN110456467A CN 110456467 A CN110456467 A CN 110456467A CN 201910860903 A CN201910860903 A CN 201910860903A CN 110456467 A CN110456467 A CN 110456467A
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- light beam
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- 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
- G02B6/4206—Optical features
-
- 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
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
This application provides a kind of optical modules, including circuit board, lens subassembly, filtering reflective piece, LD and PD；LD and PD is mounted on the first surface of circuit board, and the light power of LD, which is greater than optical fiber transmission, allows optical power；Filtering reflective piece is embedded in lens subassembly, and lens subassembly cover is buckled in the top of LD and PD, and filtering reflective piece covers PD in the view field of circuit board；Filtering reflective piece includes substrate, multiplex film and decaying film, and multiplex film, which adheres to, is arranged in the one side of substrate, and the another side of substrate is arranged in decaying film attachment, and the one side of substrate and the another side of substrate are opposite, and the another side of substrate is towards PD.In optical module provided by the present application, the LD transmitting light beam penetrated from filtering reflective piece the light beam to be received with PD that filtering reflective piece waits being reflected is incident to is located in same optical path, the light beam and light beam PD to be received that LD transmitting can be achieved share an optical fiber, reach the function of single fiber bi-directional, improves fiber utilization.
Description
Technical field
This application involves technical field of photo communication more particularly to a kind of optical modules.
Background technique
In optical communication technique, optical signal is carried out high speed, long-time, reliable information and is passed by the carrier as information
It is defeated.Core component of the optical module as optical communication field is converted between photosignal for carrying out.
Include a series of elements in optical module, wherein most importantly LD (Laser Diode, semiconductor laser),
PD (Photo-Diode, photodiode), lens subassembly, circuit board etc..In general, one end of optical module is connected by golden finger
Host computer, the other end connect fibre ribbon.Circuit board in optical module receives the electric signal that host computer is sent by golden finger, and LD will
Power information is converted to optical signal and emits from LD, then collimation and convergence of the optical signal that LD is issued by lens subassembly arrive
Up to fibre ribbon；Lens subassembly is reached by the optical signal that fibre ribbon is transmitted to optical module simultaneously, lens subassembly carries out optical signal
Collimation and convergence reach PD, and PD converts optical signal into electric signal, is then transmitted to host computer by golden finger.
In existing optical module, LD and PD are typically provided in two parallel lines of circuit board length direction.From
And matched in optical module using the optical path of the middle optical path and a reception optical signal that will will form a transmitting optical signal to reach
The purpose of each optical path work is closed, optical fiber a part of fibre ribbon is for emitting optical signal a part for receiving optical signal.So
The utilization rate of fibre ribbon will be caused relatively low.
Summary of the invention
This application provides a kind of optical modules, help to improve the utilization rate of optical fiber.
This application provides a kind of optical modules, including circuit board, lens subassembly, filtering reflective piece, LD and PD；Wherein:
The LD and PD is mounted on the first surface of the circuit board, and the light power of the LD is greater than optical fiber transmission and allows
Optical power；
The filtering reflective piece is embedded in the lens subassembly, and the lens subassembly cover is buckled in the upper of the LD and PD
Side, the filtering reflective piece cover the PD in the view field of the circuit board；
The filtering reflective piece includes that the substrate is arranged in substrate, multiplex film and decaying film, the multiplex film plating
The another side of the substrate is arranged in one side, the decaying film plating, and the one side of the substrate is another with the substrate
One side is opposite；
For the light beam of the LD transmitting by injecting optical fiber after the decaying film, the light beam from optical fiber is anti-through the multiplex film
It is incident upon the PD.
In optical module provided by the present application, including circuit board, lens subassembly, filtering reflective piece, LD and PD, LD and PD setting
On the same surface of circuit board, filtering reflective piece is embedded in lens subassembly, and lens subassembly cover is buckled in the top of LD and PD, and filtering is anti-
The view field that piece is penetrated in circuit board covers PD.And filtering reflective piece includes substrate, multiplex film and decaying film.In the application
In, the light beam of LD transmitting is incident to lens subassembly, reflexes to decaying film through lens subassembly, the light beam for the film decaying LD transmitting that decays,
The light beam of LD transmitting after decaying is incident to substrate, and multiplex film is incident to after substrate, finally injects optical fiber through multiplex film；Come
It is first incident to multiplex film from the light beam of optical fiber, then reflexes to PD through multiplex film.Permit since the light power of LD is greater than optical fiber transmission
Perhaps optical power, the light beam of decaying film decaying LD transmitting, therefore combine comprising substrate, multiplex film and decaying film from filtering reflective
Piece realizes the LD penetrated from filtering reflective piece transmitting light beam and is incident to PD that filtering reflective piece waits being reflected light beam to be received
In same optical path, realizes that the light beam of LD transmitting and light beam PD to be received share an optical fiber, that is, reach single fiber bi-directional
Function improves fiber utilization.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is optical communication terminal connection relationship diagram；
Fig. 2 is optical network unit structural schematic diagram；
Fig. 3 is a kind of structural schematic diagram of the optical module provided in the embodiment of the present application；
Fig. 4 is a kind of decomposition texture schematic diagram of the optical module provided in the embodiment of the present application；
Fig. 5 is a kind of main view of the circuit board provided in the embodiment of the present application；
Fig. 6 is a kind of top view of the circuit board provided in the embodiment of the present application；
Fig. 7 is a kind of structural schematic diagram of the lens subassembly provided in the embodiment of the present application；
Fig. 8 is a kind of partial sectional view of the optical module provided in the embodiment of the present application；
Fig. 9 is a kind of structural schematic diagram of the filtering reflective piece provided in the embodiment of the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The core link of fiber optic communication first is that the conversion of photosignal.Fiber optic communication is existed using the optical signal for carrying information
It is transmitted in optical fiber/optical waveguide, low cost may be implemented using the passive transmission characteristic of light in a fiber, low-loss information passes
It is defeated.And the information processing equipments such as computer are using electric signal, this just need to realize in signals transmission electric signal with
The mutual conversion of optical signal.
Optical module realizes above-mentioned photoelectric converting function in technical field of optical fiber communication, and optical signal and the mutual of electric signal turn
Change be optical module core function.Optical module realizes being electrically connected between external host computer by the golden finger on circuit board,
Main electrical connection includes power supply, I2C signal, transmission data-signal and ground connection etc., and the electric connection mode that golden finger is realized is
Through becoming the standard mode of optical module industry, based on this, circuit board is technical characteristic indispensable in most of optical module.
Fig. 1 is optical communication terminal connection relationship diagram.As shown in Figure 1, the connection of optical communication terminal mainly includes light net
Network unit 100, optical module 200, optical fiber 101 and cable 103；
One end of optical fiber connects remote server, and one end of cable connects local information processing equipment, local information processing
The connection of equipment and remote server is completed by the connection of optical fiber and cable；And the connection between optical fiber and cable is by with optical mode
The optical network unit of block is completed.
The optical port of optical module 200 is connect with optical fiber 101, is established two-way optical signal with optical fiber and is connect；The electricity of optical module 200
In mouth access optical network unit 100, two-way electric signal is established with optical network unit and is connect；Optical module realizes optical signal and telecommunications
Number mutual conversion, thus realize connection is established between optical fiber and optical network unit；Specifically, from the optical signals of optical fiber
Optical module is input in optical network unit 100 after being converted to electric signal, and the electric signal from optical network unit 100 is turned by optical module
Optical signal is changed to be input in optical fiber.Optical module 200 is the tool realizing photosignal and mutually converting, without processing data
Function, in above-mentioned photoelectric conversion process, information does not change.
Optical network unit has optical module interface 102, for accessing optical module, establishes two-way electric signal with optical module and connects
It connects；There is optical network unit cable interface 104 to establish two-way electric signal for accessing cable with cable and connect；Optical module with
Connection is established by optical network unit between cable, specifically, the signal from optical module is passed to cable by optical network unit,
Signal from cable is passed into optical module, work of the optical network unit as the ipc monitor optical module of optical module.
So far, remote server is by optical fiber, optical module, optical network unit and cable, with local information processing equipment it
Between establish two-way signal transmission channels.
Common information processing equipment includes router, interchanger, electronic computer etc.；Optical network unit is optical module
Host computer provides data-signal to optical module, and receives the data-signal from optical module, and common optical module host computer is also
Optical line terminal etc..
Fig. 2 is optical network unit structural schematic diagram.As shown in Fig. 2, having circuit board 105, In in optical network unit 100
Cage 106 is arranged in the surface of circuit board 105；It is provided with electric connector in cage 106, for accessing the optical modules such as golden finger electricity
Mouthful；Radiator 107 is provided on cage 106, radiator 107 has the bulge-structures such as the fin of increasing heat radiation area.
Optical module 200 is inserted into optical network unit, specially the electric connector in the power port insertion cage 106 of optical module,
The optical port of optical module is connect with optical fiber 101.
Cage 106 is located on circuit board, and the electric connector on circuit board is wrapped in cage；Optical module is inserted into cage
In, by the fixed optical module of cage, the heat that optical module generates is conducted to cage by optical module shell, eventually by cage
Radiator 107 is diffused.
Fig. 3 is a kind of structural schematic diagram of optical module 200 provided by the embodiments of the present application, and Fig. 4 mentions for the embodiment of the present invention
For the decomposition texture schematic diagram of optical module 200.As shown in Figure 3 and Figure 4, optical module 200 provided by the embodiments of the present application includes upper
Shell 201, lower case 202, release lever 203 and circuit board 204.
Upper housing 201 and lower case 202 form tool there are two the package cavity being open, and specifically can be unidirectional
Both ends open (205,206) is also possible to be open at two in different directions；One of opening is power port 206, for inserting
Enter in the host computers such as optical network unit, another opening is optical port 205, is accessed for external fiber to connect internal optical fiber, electricity
The photoelectric devices such as road plate 204 are located in package cavity.
Upper housing 201 and lower case 202 generally use metal material, are conducive to realize electromagnetic shielding and heat dissipation；Using upper
The assembly method that shell 201, lower case 202 combine will not generally incite somebody to action convenient for the devices such as circuit board 204 are installed in shell
The shell of optical module is made of one structure, in this way in devices such as wiring harness plates, positioning element, heat dissipation and electromagnetic shielding knot
Structure can not be installed, and production automation is also unfavorable for.
Release lever 203 is located at the outer wall of package cavity/lower case 202, pulls the end of release lever that can make to solve
Handle is locked to relatively move in outer wall surface；Optical module is fixed on host computer by release lever 203 when optical module is inserted into host computer
Cage in, by pulling release lever 203 to release the snap-fit relationship of optical module and host computer, so as to by optical module from
It is extracted out in the cage of host computer.
Fig. 5 provides the main view of the circuit board 204 in optical module for the embodiment of the present application, and attached drawing 6 is the embodiment of the present application
The top view of the circuit board 204 in optical module is provided, wherein the optional pcb board of circuit board 204.As it can be seen in figures 5 and 6, the application is real
It applies and lens subassembly 401, filtering reflective piece 402, LD403 and PD404 is provided on the circuit board 204 of example offer.Implement in the application
In example, circuit board 204 is flat laminated structure, and LD403 and PD404 are mounted on the first surface of circuit board 204, i.e. LD403
It is coplanar with PD404.In the embodiment of the present application, circuit board 204 is usually single sided board, and the first surface of circuit board 204 is to fix
Close to the face that shell one side is opposite compared with when in shell.Preferably, LD403 and PD404 approximation is arranged along circuit board 204
On the same straight line that length direction extends, i.e. LD403 and PD404 are conllinear on 204 length direction of circuit board, so more just
The installation of sharp lens subassembly 401 and filtering reflective piece 402.
In the embodiment of the present application, by the golden finger on circuit board 204 by external electric signal transmission to driving chip,
Driving chip generates driving signal based on the received electrical signal and is transmitted to LD403, and LD403 based on the received send out by driving signal
Penetrate optical signal；PD404 receives optical signal and converts optical signal into electric signal, then will by the golden finger on circuit board 204
Electric signal transmission is to the outside of optical module.
The cover of lens subassembly 401 is buckled on LD403 and PD404, and lens subassembly 401 includes collimation lens, reflecting mirror, condenser
Deng the collimation of the light beam to be received for the light beam and PD404 of LD403 transmitting and convergence.Attached drawing 7 is the embodiment of the present application example
A kind of cross-sectional view for lens subassembly 401 that formula provides, but the lens subassembly 401 in the embodiment of the present application is not limited only to this.It is such as attached
Shown in Fig. 7, the upper surface setting of lens subassembly 401 is fluted, forms the first inclined-plane 4011 and the second inclined-plane 4012 in a groove,
First inclined-plane 4011 has the function of reflected light, and hole 4013 is opened up on the second inclined-plane 4012, and the setting of filtering reflective piece 402 exists
On hole 4013.Further, the first plus lens 4014 and the second plus lens 4015 is arranged in the lower surface of lens subassembly 401.
First plus lens 4014 is located at the top of LD403, the light beam of convergence LD403 transmitting；The setting of second plus lens 4015 exists
Above PD404, light beam convergence PD404 to be received.
Attached drawing 8 provides the broken section structural schematic diagram of optical module for the embodiment of the present application.As shown in Fig. 8, filtering is anti-
Piece 402 is penetrated to be embedded in lens subassembly 401, if filtering reflective piece 402 is arranged on the hole 4013 of lens subassembly 401, filtering
Reflector plate 402 covers PD404 in the view field of circuit board 204.The light beam of LD403 transmitting is incident to lens subassembly 401, incident
Light beam to lens subassembly 401 reflexes to filtering reflective piece 402 through the first inclined-plane 4011 of lens subassembly 401, anti-through filtering
Piece 402 is penetrated, optical fiber is then coupled to, be transmitted through the fiber to the outside of optical module and is transmitted.Optionally, LD403 emits
Light beam be incident to lens subassembly 401, first pass through the first plus lens 4014 collimation and convergence, be incident to lens subassembly 401
The first inclined-plane 4011.Light beam PD404 to be received is transmitted in optical module from optical fiber, and the light beam from optical fiber is through filtering reflective
Piece 402 reflexes to PD404, and the optical signal received is converted electric signal by PD404.Optionally, light beam PD404 to be received exists
It is incident to filtering reflective piece 402, the second plus lens 4015 on lens subassembly 401 is entered after the reflection of filtering reflective piece 402,
It is collimated by the second plus lens 4015 on lens subassembly 401 and convergence is incident to PD404.Therefore, the embodiment of the present application mentions
The filtering reflective piece 402 of confession is used for the light beam of light beam and reflection from optical fiber through LD403 transmitting, helps to realize optical module
The light beam of transmitting and received light beam are total to optical path.
Attached drawing 9 is a kind of structural schematic diagram of filtering reflective piece 402 provided by the embodiments of the present application.As shown in Fig. 9, In
In the embodiment of the present application, filtering reflective piece 402 includes decaying film 501, substrate 502 and multiplex film 503, and decay film 501 and multiplex
The opposite two sides of substrate 502 are arranged in the attachment of film 503.Preferably, multiplex film 503 is towards PD404.Specifically, multiplex film 503
Attachment is arranged in the first side of substrate 502, and decaying film 501 adheres to the second side that substrate 502 is arranged in, and the of substrate 502
One side is opposite with the second side of substrate 502.
In actual use, the luminous power of LD403 is too big, and light power specification actually required is low, or, LD403
Light power be greater than optical fiber transmission and allow optical power, therefore the filtering reflective piece 402 in the embodiment of the present application need to have decaying
Function, for the light beam in the LD403 transmitting that decays to a certain degree or in ratio.For realize filtering reflective piece 402 attenuation function,
Decaying film 501 is provided on filtering reflective piece 402 provided by the embodiments of the present application.Decaying film 501 is for absorbing or reflecting incidence
To its light beam, so that the light intensity through its light beam be made to reduce.In the embodiment of the present application, preferably decay 501 pairs of incidences of film
Light beam to it has absorption, can effectively avoid adverse effect caused by the reflected beams.Optionally, decaying film 501 is optional
Ag decaying film etc..
The light beam of LD403 transmitting reflexes to the decaying film 501 through the first inclined-plane 4011 of lens subassembly 401, described to decline
Subtract film 501 to decay the light beam of LD403 transmitting, the light beam for transmiting the LD403 transmitting of the decaying film 501 is incident to institute
Substrate 502 is stated, then the light beam of the LD403 transmitting is incident to the multiplex film 503 through the substrate 502, finally penetrates
Multiplex film 503 is incident to optical fiber.The light beam for needing PD404 to be received from optical fiber reflexes to the PD404 through multiplex film 503, i.e.,
Light beam from optical fiber reflexes to PD404 through multiplex film 503.
Substrate 502 has translucency, and there is the material of good light permeability to make for optional transparent plastic, glass etc..Preferably,
Substrate 502 is glass substrate.Multiplex film 503, which adheres to, is arranged in the first side of the glass substrate, and the of the glass substrate
For one side towards PD404, film 501 of decaying adheres to the second side that the glass substrate is arranged in.Optionally, glass substrate is
The glass substrate of WMS-15 glass baseplate.
To realize, there is filtering reflective piece 402 light beam and reflected P D404 through LD403 transmitting to wait in the embodiment of the present application
Received effect, is provided with multiplex film 503 on filtering reflective piece 402, multiplex film 503 may be selected the light beam through specific wavelength with
And the light beam of selection reflection specific wavelength.Assuming that optical module launch wavelength provided by the embodiments of the present application be λ 1 optical signal and
The optical signal of a length of λ 2 of received wave, i.e. it is λ 2 that the wavelength of LD403 transmitting light beam, which is the wavelength that λ 1, PD404 receive light beam, then closing
Wave film 503 is by the light beam that transmission peak wavelength is λ 1, the light beam that reflection wavelength is λ 2.Wavelength is λ 1 and 2 light beam of λ is not definite value, in fact
Actual value determines by the wavelength of the optical signal of optical module actual transmissions, such as: optical signal and reception of the optical module with launch wavelength 850nm
Wavelength is the optical signal of 908nm, then λ 1 is 850nm, and λ 2 is 908nm.
Optionally, multiplex film 503 is that the light beam of λ 1 has the transmissivity greater than 90%, multiplex film pair to the wavelength for being incident to it
The wavelength for being incident to it is that the light beam of λ 2 has the reflectivity greater than 90%, and then realizes that multiplex film is high to the light beam that wavelength is λ 1 thoroughly
The light beam high reflectance penetrated rate and be λ 2 to wavelength.In the embodiment of the present application, multiplex film 503 includes several layers with a thickness of four
The film of/mono- λ 1 forms, and film can be alternately stacked for titanium dioxide and magnesium fluoride, tantalum pentoxide and silica etc.
Film.
In the embodiment of the present application, according to the light power of LD403, film 501 of decaying, which can decay, is incident to its LD403 transmitting
The beam energy that wavelength is λ 1 is absorbed a part by the light of the 10%-90% of light beam, i.e. decaying film 501, absorbs energy PIt absorbsZhan is total
Energy P0Proportional region can be 10%-90% arbitrary value, but mainly also need consider LD403 practical light power.
In the embodiment of the present application, prepared by the method that magnetron sputtering can be used in film 501 and multiplex film 503 that decays.
Optical fiber is arranged along 204 length direction of circuit board, i.e. optical fiber light that it is transmitted to received from 204 length direction of circuit board
Signal and the optical signal outside optical module is transmitted to optical module along 204 length direction of circuit board.Therefore by LD403 and
PD404 is arranged on the same straight line of 204 length direction of circuit board extension, can be waiting by the LD403 light beam emitted and PD404
The light beam of receipts is located in same optical path from filtering reflective piece 402 to optical fiber, and then realizes that the light beam of LD403 transmitting is waited for PD404
Received light beam shares an optical fiber, that is, reaches the function of single fiber bi-directional, be served only for some direction light beam compared to optical fiber
Transmission, improves the utilization rate of optical fiber.
In the embodiment of the present application, filtering reflective piece 402 is tilted toward optical module incoming fiber optic volume one end.Such as filtering reflective piece
The angle of plane is 35-55 ° where 402 and PD404.Optionally, the angle of plane where filtering reflective piece 402 and PD404 is
40-50°.Preferably, filtering reflective piece 402 and the angle of the place PD404 plane are 45 °, i.e. filtering reflective piece 402 and circuit board
Angle formed by 204 is 45 °, and so the light beam edge convenient for guarantee through filtering reflective piece 402 is parallel to 204 direction of circuit board biography
Defeated and process filtering reflective piece 402 reflexes to the light beams such as PD404 and transmits along the direction perpendicular to circuit board 204.
It in the embodiment of the present application, is the installation convenient for lens subassembly 401, in addition to collimation lens, anti-on lens subassembly 401
It is outer to penetrate mirror, condenser etc., further includes lens carrier.Lens carrier is used for orderly fixation collimation lens, reflecting mirror, condenser
Deng, and lens carrier can also be used in fixed filtering reflective piece 402, and filtering reflective piece 402 is facilitated to install.
Further, optical module provided by the embodiments of the present application further includes structure of fiber_optic 405, is used to set on structure of fiber_optic 405
Optical fiber 406 is set, structure of fiber_optic 405 is detachably connected lens carrier, is so easy to implement the connection of optical fiber.Optionally, optical fiber 406
For fibre ribbon.
In addition, the optional doped-glass plate of substrate 502, the absorbable light beam for being incident to it of doped-glass plate, reach further
The LD403 that decays emits the purpose of light beam.Doped-glass plate, which refers to, adds stone in its raw material during making glass plate
The dopants such as ink, carbon or metal oxide increase transparency glass plate to being incident to it by adding dopant in glass raw material
The absorptivity of light beam, and then the purpose of further decaying LD403 transmitting light beam may be implemented, it cooperates well with decaying film 501
It completes decaying LD403 and emits light beam.The occupancy volume of dopant is bigger in usual doped-glass plate, and the doped-glass plate of acquisition declines
The ability of dim light beam is stronger.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments, and related place is referring to side
The part of method embodiment illustrates.It should be noted that those skilled in the art are considering the hair of specification and practice here
After bright, other embodiments of the present invention will readily occur to.This application is intended to cover any modification of the invention, purposes or fit
Answering property changes, these variations, uses, or adaptations follow general principle of the invention and do not invent including the present invention
Common knowledge or conventional techniques in the art.The description and examples are only to be considered as illustrative, the present invention
True scope and spirit be indicated by the following claims.
It should be understood that the application is not limited to the precise structure that has been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.Scope of the present application is only limited by the accompanying claims.
Claims (10)
1. a kind of optical module, which is characterized in that including circuit board, lens subassembly, filtering reflective piece, LD and PD；Wherein:
The LD and PD is mounted on the first surface of the circuit board, and the light power of the LD, which is greater than optical fiber transmission, allows light function
Rate；
The filtering reflective piece is embedded in the lens subassembly, and the lens subassembly cover is buckled in the top of the LD and PD, institute
The view field that filtering reflective piece is stated in the circuit board covers the PD；
The filtering reflective piece includes substrate, multiplex film and decaying film, and the side of the substrate is arranged in the multiplex film attachment
The another side of the substrate, the other side of the one side of the substrate and the substrate is arranged in face, the decaying film attachment
Face is opposite；
The light beam of the LD transmitting is by injecting optical fiber after the decaying film；Light beam from optical fiber is reflexed to through the multiplex film
The PD.
2. optical module according to claim 1, which is characterized in that the substrate is glass substrate, the multiplex film attachment
The first side of the glass substrate is set, and towards the PD, the decaying film adheres to the first side of the glass substrate
The second side of the glass substrate, the second side phase of the first side of the glass substrate and the glass substrate are set
It is right.
3. optical module according to claim 2, which is characterized in that the glass substrate is the glass of WMS-15 glass baseplate
Substrate.
4. optical module according to claim 1, which is characterized in that the substrate filtering reflective piece and the place PD plane
Angle be 40-50 °.
5. optical module according to claim 4, which is characterized in that the folder of the filtering reflective piece and the place PD plane
Angle is 45 °.
6. optical module according to claim 2, which is characterized in that the decaying film is decayed the light beam of LD transmitting
10%-90%.
7. optical module according to claim 1, which is characterized in that the multiplex film transmission emits the LD for reaching it
Light beam have the transmissivity greater than 90%.
8. optical module according to claim 1, which is characterized in that the multiplex film receives the PD for reaching it
Light beam has the reflectivity greater than 90%.
9. optical module according to claim 1, which is characterized in that the lens subassembly includes lens carrier, the filtering
Reflector plate is arranged on the lens carrier.
10. optical module according to claim 9, which is characterized in that the optical module further includes structure of fiber_optic, the optical fiber
Optical fiber is set on bracket, and the structure of fiber_optic is detachably connected the lens carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910860903.XA CN110456467A (en) | 2019-09-11 | 2019-09-11 | A kind of optical module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910860903.XA CN110456467A (en) | 2019-09-11 | 2019-09-11 | A kind of optical module |
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| CN110456467A true CN110456467A (en) | 2019-11-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021163953A1 (en) * | 2020-02-20 | 2021-08-26 | 华为技术有限公司 | Optical coupling system, optical module and optical communication device |
| WO2022267805A1 (en) * | 2021-06-22 | 2022-12-29 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN116184585A (en) * | 2023-02-21 | 2023-05-30 | 讯芸电子科技(中山)有限公司 | Single-fiber bidirectional 800G optical module |
-
2019
- 2019-09-11 CN CN201910860903.XA patent/CN110456467A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021163953A1 (en) * | 2020-02-20 | 2021-08-26 | 华为技术有限公司 | Optical coupling system, optical module and optical communication device |
| CN114902102A (en) * | 2020-02-20 | 2022-08-12 | 华为技术有限公司 | Optical coupling system, optical module and optical communication device |
| WO2022267805A1 (en) * | 2021-06-22 | 2022-12-29 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN116184585A (en) * | 2023-02-21 | 2023-05-30 | 讯芸电子科技(中山)有限公司 | Single-fiber bidirectional 800G optical module |
| CN116184585B (en) * | 2023-02-21 | 2023-11-14 | 讯芸电子科技(中山)有限公司 | Single-fiber bidirectional 800G optical module |
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