CN109814223A - A kind of WDM device and method for optical module - Google Patents
A kind of WDM device and method for optical module Download PDFInfo
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- CN109814223A CN109814223A CN201910141737.8A CN201910141737A CN109814223A CN 109814223 A CN109814223 A CN 109814223A CN 201910141737 A CN201910141737 A CN 201910141737A CN 109814223 A CN109814223 A CN 109814223A
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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Abstract
The present invention relates to optical communication fields, and in particular to a kind of WDM device and method for optical module.Wherein WDM device includes at least two light splitting slots, and the optical signal to specified wavelength of the light splitting slot selectivity is totally reflected or total transmissivity；The light splitting slot respective optical path input port and optical output mouth position are used for transmission the radiated element of corresponding position setting or the optical signal of receiving element.The present invention in WDM device main body by being arranged light splitting slot, and respective optical element and circuit element are used cooperatively, construct specific light path system, so that WDM device is completed point multiplexing of different wave length optical signal, the transmitting-receiving of multiple signals is completed on an optical fiber, and pass through the design to WDM device body shape and structure, improve the integrated level of WDM device, optical path installation difficulty is reduced, ensure that the transmission quality of optic communication, reduces the cost of optic communication.
Description
[technical field]
The present invention relates to optical communication fields, more particularly to a kind of WDM device and method for optical module.
[background technique]
In recent years, data information demand largely increases, optical module in data communication using more and more extensive, to optical mode
Transmission performance, stability, ease for use, cost of block etc. are proposed high requirement.In order to improve communication bandwidth, reduce communication at
This, at present in short range data transmission, is especially widely used multimode fibre in data center and carries out data transmission, to want
It asks optical module to have transmission and transmits the ability of multichannel different wave length optical signal.
In order to solve the light splitting multiplying question of optical module, the wavelength-division multiplex technique of single mode optical fiber is usually used for reference at present, more
WDM device is added in mould optical module, light splitting multiplexing is carried out to multichannel different wave length optical signal using plane beam splitter group.
But optical device is more in light splitting multiplexed light system, and optical path precise requirements are higher, installation and debugging are all relatively complicated tired
Difficulty, and easily damaged during installing and using leads to the integrated level of the WDM device for optical module, stability and general
Property is lower.
In consideration of it, how to overcome defect present in the prior art, solve to divide using the higher light path system of integrated level
Mating plate versatility problem difficult to install and for different wave length, provide be easier to use, be more stable, cost it is lower for optical module
WDM device, be the art urgent problem to be solved.
[summary of the invention]
Aiming at the above defects or improvement requirements of the prior art, the present invention solves the reality of wavelength-division multiplex function in optical module
Existing and integration problem.
The embodiment of the present invention adopts the following technical scheme that
In a first aspect, the present invention provides a kind of WDM device for optical module, the WDM device is set
At least two light splitting slots are set, the optical signal to specified wavelength of the light splitting slot selectivity is totally reflected or total transmissivity；The light splitting
Slot respective optical path input port and/or optical output mouth position, are used for transmission the radiated element and/or connect that corresponding position is correspondingly arranged
Receive the optical signal of element；Wherein, the optical path input port is for optical signal to be input in WDM device；The optical path is defeated
Outlet from WDM device for exporting optical signal.
Preferably, incident optical signal is divided into reflected light and transmitted light by the light splitting slot of optical path input port, and the transmitted light is logical
It crosses corresponding optical path delivery outlet and injects back light detector.
It preferably, further include reflecting surface group, the transmitted light is penetrated after the reflection of reflecting surface group by corresponding optical path delivery outlet
Enter back light detector.
Preferably, radiated element is also contained at least two, wavelength-division multiplex emitter is constituted；Or, also containing at least two
Receiving element, structure wavelength-division multiplex reception device；Or, also being constituted comprising at least one radiated element and at least one receiving element
Wavelength-division multiplex R-T unit；The two components transmitting or received wavelength of optical signal are different, and handled optical signal wave
The wavelength of optical signal of long corresponding corresponding position light splitting slot transmission.
Preferably, holding tank is arranged in the face of the WDM device respective optical path input/output port, for placing transmitting
Element, receiving element and/or back light detector.
Preferably, the holding tank is that multilayer concentric is ladder-like, and wherein internal layer ladder accommodates radiated element, receiving element
And/or back light detector, outer layer ladder accommodate associated peripheral circuits.
Preferably, the receiving channel opening is closed, the radiated element, receiving element and/or back light detector, and related
Peripheral circuit is encapsulated in holding tank.
Preferably, light splitting piece or semi-permeable membrane, pair of the light splitting piece or semi-permeable membrane selectivity are provided in the light splitting slot
The optical signal of specified wavelength is totally reflected or total transmissivity.
Preferably, the light splitting slot lower half portion is matched with the light splitting plate shape, and top half is truncated rectangular pyramids, truncated rectangular pyramids
Bottom surface is the light splitting slot insert port, and the upper bottom surface of truncated rectangular pyramids is connected with light splitting slot lower half portion.
On the other hand, the present invention provides a kind of wavelength-division multiplex methods of optical module, it is characterised in that: uses claim
It is used for the WDM device of optical module described in any one of 1-9, a point multiplexing is carried out to the optical signal transmitted in optical fiber.
Compared with prior art, the beneficial effect of the embodiment of the present invention is: by setting in WDM device main body
Being used cooperatively for light splitting slot and respective optical element and circuit element is set, specific light path system is constructed, fills wavelength-division multiplex
Point multiplexing that can complete different wave length optical signal is set, the transmitting-receiving of multiple signals is completed on an optical fiber, and by wavelength-division
The design of multiplexer body shape and structure improves the integrated level of WDM device, reduces optical path installation difficulty, protects
The transmission quality for having demonstrate,proved optic communication reduces the cost of optic communication.
The present invention provides a kind of WDM device and method for optical module, new its purpose is to provide one kind
WDM device integrating device and method carry out a point multiplexing to the optical signal of multichannel different wave length in the optical module of place, improve
Communication efficiency reduces communications cost.
[Detailed description of the invention]
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described.It should be evident that drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of WDM device structural schematic diagram for optical module provided in an embodiment of the present invention；
Fig. 2 is a kind of WDM device structural schematic diagram for optical module provided in an embodiment of the present invention；
Fig. 3 is another WDM device structural schematic diagram for being used for optical module provided in an embodiment of the present invention；
Fig. 4 is another WDM device structural schematic diagram for being used for optical module provided in an embodiment of the present invention；
Fig. 5 is partial structural diagram in a kind of WDM device for optical module provided in an embodiment of the present invention；
Fig. 6 is another WDM device structural schematic diagram for being used for optical module provided in an embodiment of the present invention；
Fig. 7 is another WDM device structural schematic diagram for being used for optical module provided in an embodiment of the present invention；
Fig. 8 another WDM device structural schematic diagram for being used for optical module provided in an embodiment of the present invention；
Fig. 9 another WDM device structural schematic diagram for being used for optical module provided in an embodiment of the present invention.
[specific embodiment]
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The present invention is a kind of architecture of specific function system, therefore mainly illustrates each structure mould in a particular embodiment
The function logic relationship of group, does not limit specific software and hardware embodiment.
In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other not
Constituting conflict can be combined with each other.Just with reference to drawings and examples, in conjunction with coming, the present invention will be described in detail below.
Embodiment 1:
With the growth of data information demand, the optical module requirement for signal interconnection is also higher and higher, how to improve light
The transmission performance of module, reduce optical mode block cost, the integration and stability for improving optical module be in current practice urgently
It solves the problems, such as.For traditional wavelength-division multiplex optical path system, optical element, circuit element are more and integrated level is low, so that raw
Production debugging is all relatively complicated, and Product Precision and stability are also affected.In order to solve foregoing problems, the present invention provides one kind
It is multiple to be improved by the optimization design to WDM device structure for wavelength-division for the WDM device and method of optical module
Reduced convenient for the installation, sealing, replacement etc. of WDM device because of installation with the integrated level, stability and versatility of device
With communication mistake caused by sealing problem and failure, and to can satisfy using the optical module of the WDM device and more answer
With the demand of scene.
Illustrate specific structure of the present invention for the WDM device of optical module below with reference to Fig. 1, Fig. 2.In the present invention
In embodiment, a kind of WDM device main structure is simply enumerated, phase can also be utilized according to the actual situation in specific implementation
Same mentality of designing is adjusted the particular number of each component of light path system and each circuit element and position.
It is as shown in Figure 1 WDM device in WDM device in a certain concrete application scene of the present embodiment
Body shape approximation cuboid, main material are uniform full impregnated optical medium.
Fig. 2 is WDM device main body along top surface and enters the sectional view after section on plane where fine side central axes, i.e.,
Along a kind of simplified structure and light path schematic diagram that the central axes Fig. 1 A-A is after lens are cut in line of demarcation.It is placed on mounting plane
Face is bottom surface, and BC is bottom surface hatching line.The face opposite with bottom surface is top surface, and DA is top surface hatching line.The light inlet surface of optical interface be into
Fine side, AB are into fine side hatching line.The face opposite with fine side is entered is second side, and CD is second side hatching line.Bottom surface and
Top surface is substantially parallel, enters fine side and second side is substantially parallel.
E1E2E3E4 and F1F2F3F4 is light splitting grooved profile.Preferably, E1E2 with 135 degree of AE1 angle, E1E2, E3E4,
F1F2, F3F4 are parallel to each other.The light splitting slot of multiple corresponding different wave length optical signals can be set as needed, to multichannel different wave length
Optical signal carry out point multiplexing
It is divided slot E1E2E3E4 face collimation lens T2 and the position receiving element I2, T2, that is, WDM device output
Mouthful, the optical signal of corresponding light splitting slot E1E2E3E4 wavelength is received by T2 by I2 through reflecting.
It is divided slot F1F2F3F4 face collimation lens T3 and the position radiated element I3, T3, that is, WDM device input
Mouthful, the optical signal of corresponding light splitting slot F1F2F3F4 wavelength is reflected by T2, then is transmitted by E1E2E3E4, then collimated
Mirror T1 is sent to optical interface I1.
Scheme provided by the present embodiment, by the way that multiple corresponding different wave length optical signals are arranged in WDM device
It is divided slot, partial wave or multiplex are carried out to the optical signal of different wave length, receive optical module where WDM device can respectively together
The optical signal of the multichannel different wave length transmitted in a piece optical fiber, or the light of transmission multichannel different wave length is believed into same root optical fiber
Number, or the optical signal of multichannel different wave length is received and dispatched simultaneously, realize wavelength-division multiplex.
Also, since WDM device main body is uniform full impregnated optical medium, the different wave length optical signal of required processing is all
It can be considered lossless linear transmission, and be integrated with the collimation lens used needed for light splitting slot and optical path input port and optical output mouth,
Light path system needed for WDM device is integrated into as far as possible in same assembling assembly, light path system installation and debugging are reduced
Difficulty, reduce in optic path because of error caused by the factors such as air, improve stability of layout and transmission quality.
Embodiment 2:
In certain concrete application scenes of the present embodiment, WDM device main body can cooperate optical element and circuit elements
Part forms specific optical path, completes signal transmitting and receiving and wavelength-division multiplex function.
In embodiments of the present invention, a kind of typical WDM device light channel structure is simply enumerated, in specific implementation
It can also according to the actual situation, using identical mentality of designing to particular number and the position of each component of light path system and each circuit element
It sets and is adjusted.It is illustrated in combination with fig. 2 as follows:
By taking the application scenarios of wavelength-division multiplex R-T unit as an example: there are a radiated element I2 and a reception members in optical path
Part I3, radiated element are used to transmit into optical signal WDM device, and receiving element is used for received from WDM device
The optical signal of outflow.
When receiving optical signal, wavelength w1 optical signal L1 is emitted by optical interface I1, and collimated lens T1 collimation reaches light splitting slot
M1, M1 are totally reflected L1, and L1 passes through collimation lens T2 after reflection and collimates, and inject receiving element I2.
When sending optical signal, the optical signal L2 of wavelength w2 is emitted by radiated element I3, after collimated lens T3 collimation, is reached
It is divided slot M2, M2 reflects L2, and L2 reaches M1 after reflection, and M1 is to L2 total transmissivity, and L2 and L1 closes beam after transmiting, and collimates through T1
Afterwards, I1 is injected.
The two-beam signal L1 and L2 of wavelength w1 and w2 are divided through above-mentioned apparatus and are multiplexed, and can upload in same optical fiber
It is defeated, reduce the number of fibers being used for transmission, reduces the cost and failure rate of transmission.
In the practical application of the present embodiment, WDM device can also be used in multichannel transmission or multipath reception, enumerate several
A typical application scenarios are as follows, in practical applications, can be as needed, in the absence of conflict, to institute in the present embodiment
The light path system of description is combined, expands use, constitutes multichannel and receives and dispatches WDM device:
(1) wavelength-division multiplex emitter.If the optical signal L4 of Fig. 3, wavelength w1 are emitted by the radiated element I4 for corresponding to T2, warp
After T2 collimation, M1 is reached, M1 reflects L4, and L4 passes through T1 after reflection and injects I1.The optical signal L2 of wavelength w2 is by radiated element
I3 outgoing reaches M2 after T3 is collimated, and M2 reflects L2, and L2 reaches M1 after reflection, and M1 is to L2 total transmissivity, the L2 after transmiting
Beam is closed with L1, after T1 is collimated, injects I1.
(2) wavelength-division multiplex reception device.It if the optical signal L1 of Fig. 4, wavelength w1 are emitted by I1, is collimated through T1, reaches light splitting
Piece M1 is collimated after M1 reflects by T2, and receiving element I2 is injected.The optical signal L5 of wavelength w2 is emitted by I1, is collimated, is arrived through T1
Up to light splitting piece M1, M1 is to L5 total transmissivity, and L5 reaches M2 after transmiting, and M2 is totally reflected L5, and L5 is collimated through T3 after reflection, injects
Receiving element I5.
In the present embodiment, is combined by different transceiving devices and optical path, realize same structure WDM device
Different function is expanded, and so that it is had higher versatility, application scenarios are more extensive.
Embodiment 3:
In the actual use of WDM device, light splitting piece can be placed in light splitting slot, light splitting piece can be to different wave length
Laser carries out transmission or reflection, and light splitting piece surface can plated film.Be divided chip size it is smaller, thickness is usually 0.1mm or so, installation and
Position correction is all inconvenient, and is easily damaged.The embodiment of the present invention using WDM device main body as light splitting piece pedestal, using point
Light slot determines light splitting piece installation site, improves the convenience degree and position precision of light splitting piece installation process, while can also prevent
Only light splitting piece position change caused by various factors, ensure that the accuracy of optical path.Also, due to the light in WDM device
The optical path that signal is transmitted mainly all in internal uniform dielectric, can also prevent from leading to optical signal transmission because of air themperature or impurity
Path changes or optical power attenuation, reduces transmission signal error, the transmission of optical module is reliable where improving WDM device
Property.
In addition to this, in certain application scenarios, light splitting slot can also not use light splitting piece, but use semi-permeable membrane, rib
Mirror, fiber splitter, draws and bores other optical devices for having separation specific wavelength optical signal such as coupler grating.Use difference
Optical device the application scenarios of optical module where WDM device can be made more extensive, meet for particular application practical
Use demand.
In certain specific embodiments of the present embodiment, light splitting groove shape can be advanced optimized, and be illustrated in figure 5 certain
Typical structure under concrete application scene, the light splitting groove shape that E1E2E3E4 is surrounded in Fig. 2 can be optimized for E1E2E3E5E6 institute
The shape surrounded.Wherein the face E1E2, E2E3 is constant, and the face E3E4 is divided into two sections, and lower section E3E5 is parallel with E1E2, and length is more than
Light splitting piece top, for fixing light splitting piece, upper section E5E6, opening E1E6 length is greater than E1E4 length in Fig. 2, expands light splitting
Channel opening facilitates installation.Preferably, 90 degree of E5E6 and top surface E5G angle.It, only need to be by light splitting piece along arrow side when light splitting piece is installed
It simply can accurately complete to install to push-in.This structure is not only convenient for the installation of light splitting piece, prevents light splitting piece installation process
In there is damaged in collision, while also securing the position of light splitting piece, do not need additionally to carry out school to light splitting piece position during installation
Standard simplifies the packaging technology of WDM device, improves the assembly precision of WDM device.
Further, in order to which the light splitting piece guaranteed in the margin of tolerance can be put into light splitting slot, light splitting slot size needs bigger
In light splitting chip size, leads to air layer occur between light splitting piece and WDM device main body, influence signal transmission path and light
Power can generate stray light optical signal transmission when serious.It, can be in order to guarantee the Stability and veracity of optical signal transmission
It is packed into refractive index glue between lens body and light splitting piece, makes to fit closely between light splitting piece and lens body.This mode was both
It can be adhered fixed light splitting piece, and prevent light splitting piece and lens body collision friction to generate to provide buffer layer around light splitting piece
Damage, also effectively solves the adverse effect that clearance air layer generates optical signal transmission.
Using lens and light splitting piece combination are integrally formed, both necessary optical device such as collimation lens was all integrated in same
On optical device, and it can be inserted into the light splitting piece of different light transmittances according to the difference of transmission wavelength of optical signal, and can go out in light splitting piece
It is replaced when now damaging.This design not only simplifies the assembling of WDM device, ensure that light splitting piece and collimation lens
Position precision, and the flexibility of light splitting piece plug is remained, the versatility of optical module, makes light where ensure that WDM device
Module can be applied on the basis of not changing structure as far as possible in more occasions.
Embodiment 4:
When using vertical laser in WDM device, it usually needs boss is set below laser, to install back
Whether power is correct for the optical signal that optical detection device confirmation radiated element issues, and backlight detecting element directly receives radiated element hair
Light out, and the light quantity received is judged.This structure must sent out when will lead to the design of WDM device structure
Penetrating element, nearby specific position retains enough space installation bases and backlight detecting element, leads to WDM device structure shape
Shape is unable to reach optimal design.
The embodiment of the invention provides a kind of WDM devices for optical module to be increased by optimizing light path system
The light signal transduction that radiated element issues is arranged the position of monitoring back light device to being more convenient for, answers wavelength-division by monitoring back light optical path
It is more compact with apparatus structure, avoid the WDM device shape occurred by boss structure is irregular, volume is excessive, installation
The problems such as inconvenient.
In some specific embodiments, WDM device main body is illustrated in figure 6 in WDM device along top surface
With enter fine side central axes where another sectional view after section on plane, it is real that the present embodiment only describes a kind of typically application
Example, in specific implementation can also according to the actual situation, using identical mentality of designing to the quantity of optical element in light path system
Position etc. is adjusted:
AB, BC are identical as Fig. 2 in Fig. 6, and CD, DA are optimized for CD1D2D3D4A in Fig. 2.CD1 is second side central axes,
D2D3, D4A are top surface central axes, and D3D4, D1D2 are reflecting surface.Preferably, D3D4 with 135 degree of D4A angle, D1D2 and D2D3 folder
135 degree of angle.
When sending optical signal, the optical signal L2 of wavelength w2 is emitted by radiated element I3, after collimated lens T3 collimation, is passed through
Optical lens ontology reaches light splitting piece M2, and M2 transmits the part L2 reflective portion.Reflected light L21 of the L2 after M2 reflects reaches M1,
M1 is to L21 total transmissivity, and L21 and L1 closes beam after transmiting, and after T1 is collimated, injects I1.Transmitted light L22 of the L2 after M2 is transmitted is arrived
Up to the first reflecting surface, the first reflecting surface is totally reflected the L22 of wavelength w2, and L22 reaches the second reflecting surface, the second reflection after reflection
L22 in face of wavelength w2 is totally reflected, and L22 is collimated after secondary reflection again through collimation lens T4, injects back light detector I4.
In the present embodiment, radiated element I3 does not need special reserved space nearby and places backlight sensing device, but will
Outgoing optical signal L2 is transmitted and is reflected by the monitoring back light light path system that M2, the first reflecting surface, the second reflecting surface form,
The back light detector I4 that other positions are set is eventually arrived at, luminous intensity is monitored by I4.
The present embodiment only lists a kind of typical monitoring back light light channel structure, it is possible to use other light channel structures will emit
Element emergent light is guided to other positions convenient for setting back light detector, as back light detector is set to this parallel section
Other than side or more than top surface equal positions.Preferably, the radiated element and backlight that backlight detection optical path and this optical path are included
Detector, positioned at the most edge of WDM device entirety optical path, such as near the position of second side.
In certain application scenarios of the present embodiment, it can also be connected into adaptation control circuit by I3 and I4, pass through master
Control chip judges the optical power that I4 is received judges whether I3 light power is correct, if I3 light power is incorrect, main control chip
The light power of I3 can adaptively be adjusted.Single-chip microcontroller etc. can be used to realize for main control chip.
Increase the monitoring back light optical path of emergent light in WDM device, structure is complicated though slightly increasing optical lens
Degree, but the structure of entire WDM device can be made more rationally compact, avoiding must be attached in radiated element in original structure
Component shape and structure limitation, make WDM device structure design more flexible conjunction caused by nearly setting monitoring back light element
Reason, optimizes the shape and structure of WDM device, wavelength-division caused by avoiding because of monitoring back light position of components on the whole
The problems such as multiplexer is in irregular shape, circuit connection is complicated.Meanwhile increasing monitoring back light optical path, it can be WDM device
In other function element, such as the more spaces of main control chip offer and placement scheme further increase WDM device
The scalability of function reduces design obstacle when increasing WDM device function.
Embodiment 5:
In practical applications, the portions such as optical interface, radiated element, receiving element, light path system are included in WDM device
The components such as part and attached circuit element, these components all easy damageds, and waterproof and dustproof all there are certain requirements.Meanwhile
All there is certain interval between optical lens in photocell, receiving element etc., if in gap impurity excessively will lead to optical path offset,
The problems such as light energy losses, stray light cross talk.
A kind of WDM device for optical module is present embodiments provided, by changing WDM device main body shape
Optical interface, radiated element, receiving element, monitoring back light element etc. are placed in the holding tank of WDM device main body, just by shape
In the fixation and encapsulation of element.
In certain specific embodiments of the present embodiment, Fig. 7 along top surface and enters fine side for main body in WDM device
Another sectional view after section on plane where the central axes of face: AB is optimized for AA1A2A3A4B in figure, and BC is optimized for
BB1B2B3B4C.Wherein the surrounded region A1A2A3A4 is the holding tank for preventing optical interface, and it is to prevent that B1B2B3B4, which surrounds region,
Radiated element, receiving element, back light detector holding tank.Holding tank depth and width are determined by the component size being disposed therein
It is fixed, and guarantee not influencing optical path in optical lens and carry out.AA1, A4B, BB2, B4C retain certain thickness, guarantee to accommodate groove sidewall
Mechanical strength makes its not cracky.Specific thickness is determined by factors such as WDM device size, packaging technology, materials.
In certain application scenarios of the present embodiment, the face A1A4, B1B4 can be sealed, and respective element is sealed in receiving
Within slot.Wherein the fiber port of optical interface is arranged on A1A4 seal cover board, connect with external fiber.It can be taken out in seal chamber true
Sky uses other closing process, keeps environmental factor such as air, impurity of internal influence optical path etc. less, further increases optical path
Accuracy.
In certain application scenarios of the present embodiment, the holding tank that optical lens A1A2A3A4, B1B2B3B4 are surrounded may be used also
It is other shapes of holding tank according to the variation of the needs of element assembly and enclosed construction, such as in certain application scenarios, such as Fig. 8 institute
The multi-step shape groove shown.The receiving groove shape contains the ladder that level-one is used to install WDM device peripheral circuit,
Can be used for installing PCB editions, control circuit elements, this design such as chip all WDM device main components can be made all to close
In WDM device body interior, the leakproofness and shape and structure of WDM device entirety are advanced optimized.It can also basis
Actual needs adjustment accommodates groove shape, can complete to match with WDM device mounting surface shape and structure, reserve branch
The functions such as support foot height.
Holding tank is arranged in WDM device main body to be sealed, it is outer relative to increasing outside WDM device
Shell, overall structure is more compact, is capable of providing higher airtightness and stability, occupies entire WDM device structure empty
Between it is smaller, shape is more regular, installation is easier, less because the failure caused by outside environmental elements such as shaking, be convenient for wavelength-division
The installation and use of multiplexer.
Embodiment 6:
In certain application scenarios of the present embodiment, optical interface is specially broadband multi-mode optical fiber (Wide Band Multi-
Mode Fiber, is abbreviated as WBMMF).Broadband multi-mode optical fiber has used for reference the wavelength-division multiplex technique of conventional single mode fiber, can be one
The road simultaneous transmission n unlike signal, improves transmission bandwidth in root multimode fiber.Meanwhile the multimode fibre number being used for transmission being dropped
For 1/n before, the cost of optical fiber transmission is reduced, communicates error probability caused by also reducing because of fiber failure.In reality
In the application scenarios of border, n value is mostly 2,4,8 etc. at present.
Under the application scenarios, the optical lens provided in the present embodiment can be arranged more according to the number of signals on multimode fibre
In 2 light splitting slots.When there are the light splitting slot that n are directed to different wave length, the optical signal of the road n different wave length can be sent out simultaneously
It send and parses, meet the demand of broadband multi-mode optical fiber simultaneous transmission multichannel optical communication data.Fig. 9 is the top partial view diagram of Fig. 1,
4 light splitting slots are set in WDM device, and each light splitting groove location corresponding one can handle transmitting/receiving for respective wavelength optical signal
Element, 4 road optical signals of composition transmit/receive system.Being divided slot and transmitting/receiving number of elements and position to be adjusted according to actual needs
It is whole.
In certain application scenarios of the present embodiment, radiated element is specially vertical cavity surface laser (Vertical
Cavity Surface Emitting Laser, is abbreviated as VCSEL), the type laser is relative to traditional edge emitting laser
Device, applied to being that be more easily implemented two-dimensional surface and photoelectricity integrated in WDM device, it is easy to accomplish effective coupling with optical fiber
It closing, High Speed Modulation may be implemented, can be applied to the optical fiber telecommunications system of long range high-speed, active area dimensions are minimum, but
The advantages that high packaging density and low threshold current, operating temperature and current range are wide, at low cost.It can be into using surface-emitting laser
One step reduces WDM device size, reduces WDM device cost, optical module transmission where improving WDM device
Distance and communication distance.
In the above specific embodiment, improved by the design to WDM device shape and structure, and auxiliary phase is answered
Optics and electronic component so that WDM device more compact structure, volume are smaller, install easier, stability and general
Property is stronger, to improve the transmission performance of optic communication, reduces the cost of optic communication, provides high efficient and reliable for optic communication
WDM device.
Claims (10)
1. a kind of WDM device for optical module, it is characterised in that:
At least two light splitting slot of WDM device setting, it is described to be divided the complete to the optical signal of specified wavelength of slot selectivity
Reflection or total transmissivity；
The light splitting slot respective optical path input port and/or optical output mouth position, are used for transmission the hair that corresponding position is correspondingly arranged
Penetrate the optical signal of element and/or receiving element；Wherein, the optical path input port is used to optical signal being input to WDM device
In；The optical output mouth from WDM device for exporting optical signal.
2. being used for the WDM device of optical module according to claim 1, it is characterised in that: point of respective optical path input port
Incident optical signal is divided into reflected light and transmitted light by light slot, and the transmitted light injects backlight detection by corresponding optical path delivery outlet
Device.
3. being used for the WDM device of optical module according to claim 2, it is characterised in that: further include reflecting surface group, institute
It states transmitted light and back light detector is injected by corresponding optical path delivery outlet after the reflection of reflecting surface group.
4. being used for the WDM device of optical module according to claim 1, it is characterised in that:
Radiated element is also contained at least two, wavelength-division multiplex emitter is constituted；
Or, receiving element is also contained at least two, structure wavelength-division multiplex reception device；
Or, also constituting wavelength-division multiplex R-T unit comprising at least one radiated element and at least one receiving element；
The two components transmitting or received wavelength of optical signal are different, and handled wavelength of optical signal corresponds to corresponding position
It is divided the wavelength of optical signal of slot transmission.
5. being used for the WDM device of optical module according to claim 4, it is characterised in that: the WDM device pair
Answer the face of optical path input/output port that holding tank is set, for placing radiated element, receiving element and/or back light detector.
6. the WDM device of optical module according to claim 5, it is characterised in that: the holding tank is multilayer concentric rank
Scalariform, wherein internal layer ladder accommodates radiated element, receiving element and/or back light detector, and outer layer ladder accommodates related peripheral electricity
Road.
7. being used for the WDM device of optical module according to claim 6, it is characterised in that: the receiving channel opening is close
It closes, the radiated element, receiving element and/or back light detector and associated peripheral circuits are encapsulated in holding tank.
8. the WDM device of optical module is used for described in any one of -7 according to claim 1, it is characterised in that: the light splitting
Be provided with light splitting piece or semi-permeable membrane in slot, the light splitting piece or semi-permeable membrane selectivity to the optical signal total reflection of specified wavelength or
Total transmissivity.
9. being used for the WDM device of optical module according to claim 8, it is characterised in that: the light splitting slot lower half portion
It is matched with the light splitting plate shape, top half is truncated rectangular pyramids, and truncated rectangular pyramids bottom surface is the light splitting slot insert port, truncated rectangular pyramids
Upper bottom surface is connected with light splitting slot lower half portion.
10. a kind of wavelength-division multiplex method of optical module, it is characterised in that: use and be used for light described in any one of claim 1-9
The WDM device of module carries out wavelength-division multiplex to the optical signal transmitted in optical fiber.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910141737.8A CN109814223A (en) | 2019-02-26 | 2019-02-26 | A kind of WDM device and method for optical module |
| PCT/CN2019/129740 WO2020173215A1 (en) | 2019-02-26 | 2019-12-30 | Wavelength division multiplexing apparatus and method for use in optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910141737.8A CN109814223A (en) | 2019-02-26 | 2019-02-26 | A kind of WDM device and method for optical module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109814223A true CN109814223A (en) | 2019-05-28 |
Family
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|---|---|---|---|
| CN201910141737.8A Pending CN109814223A (en) | 2019-02-26 | 2019-02-26 | A kind of WDM device and method for optical module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109814223A (en) |
| WO (1) | WO2020173215A1 (en) |
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Also Published As
| Publication number | Publication date |
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| WO2020173215A1 (en) | 2020-09-03 |
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