CN207008134U - It is easy to the multidirectional component of single fiber of separately adjacent wavelength - Google Patents
It is easy to the multidirectional component of single fiber of separately adjacent wavelength Download PDFInfo
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- CN207008134U CN207008134U CN201720984186.8U CN201720984186U CN207008134U CN 207008134 U CN207008134 U CN 207008134U CN 201720984186 U CN201720984186 U CN 201720984186U CN 207008134 U CN207008134 U CN 207008134U
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Abstract
The utility model discloses the multidirectional component of single fiber for being easy to separately adjacent wavelength, including the multidirectional component body of single fiber, the multidirectional component body of single fiber includes input/output terminal, the first transmitting terminal, the second transmitting terminal, the first receiving terminal, the second receiving terminal and filter set, the filter set includes the first optical filter, the second optical filter, the 3rd optical filter and the 4th optical filter, and negative lens, isolator and sidesway piece are disposed between the 4th optical filter and the first optical filter.On the premise of high coupling efficiency is kept, to fold original light path, light path is have compressed, it is achieved thereby that the topology layout of the multidirectional component of most compact single fiber；The utility model obtains higher coupling efficiency by shorter light path, less volume, solve adjacent wavelength interference and can not be effectively separated difficulty and volume on strict demand.
Description
Technical field
It the utility model is related to a kind of optical transceiver module component in technical field of optical fiber communication, and in particular to be easy to separate
The multidirectional component of single fiber of adjacent wavelength.
Background technology
Increasingly popularized with the application of fiber optic network, especially all over the world intelligent acess FTTH (Fiber To The
Home) project is progressively implemented, and the propulsion of point-to-point data transfer, particularly unification of three nets, and fiber to the home network from
EPON and GPON is upgraded to fiber to the home network (NGPON1 is divided into XGPON and 10GEPON again) of future generation, mixed networking occurs
Situation, in the market are also increasing for the demand of the multidirectional component of single fiber.
Such as, it is necessary to the wavelength of processing is 1270nm inside XGPON standards, and 1577nm, compared in original GPON standards
1310nm, 1490nm, and the 1550nm inside unification of three nets, wavelength interval become most narrow from original most narrow 60nm
27nm.Actual transition band becomes 15nm, corresponding technical difficulty is multiplied from original 40nm.
The principle of existing single fiber four-way optical transceiver module component, as shown in figure 1, the first optical signal and the second optical signal lead to
Cross optical fiber and optical module is entered by common port 1, in optical module, optical filter is respectively positioned on the main optical path of the transmitting of common port 1, the
One optical filter 51 is in 45 degree of angles with light path, and light beam passes through the first optical filter 51, and 90 degree of reflections occur for the first optical signal by the first light
Electric explorer 31 receives；Pass through the second optical filter 52 again after the transmission of second the first optical filter of optical signals 51, then the second light is believed
Number reflect through the second optical filter 52 and to be received by the second photodetector 32.First receiving terminal 31 and the second receiving terminal 32 are a kind of light
Detector, for opto-electronic conversion, optical signal is set to be converted into electric signal.First transmitting terminal 21 and the second transmitting terminal 22 use laser two
Pole pipe, the 3rd optical signal that the first transmitting terminal 21 is sent pass through the 3rd optical filter 53, the second optical filter 52 and the first optical filter 51
Common port 1 is transmitted into, the 4th optical signal that the second transmitting terminal 22 is sent is filtered after the reflection of the 3rd optical filter 53, then by second
The optical filter 51 of mating plate 52 and first is transmitted into common port 1.
First optical signal, the second optical signal, the wavelength of the 3rd optical signal and the 4th optical signal are different each other, and
Respectively λ1、λ2、λ3And λ4, first, second and third and four optical signal there is wavelength different from each other, the first optical signal and the second light letter
Number wavelength be adjacent wavelength, λ1=1270 ± 10nm, λ2=1310 ± 20nm, the interval of its wavelength is minimum, is 10nm-70nm,
The interval of 3rd optical signal and the 4th wavelength of optical signal is wider.
In the structure of the existing multidirectional component of single fiber, in order to realize the transmission of different wave length and reflection, its first filter plate
51st, the second optical filter 52, the 3rd optical filter 53 must make 45 ° of incidences of optical signal, while in order to meet application requirement, prevent from transmiting
Wavelength signals or reflection wavelength signal can not be separated effectively, and the wavelength interval of transmitting and receiving terminal just must be sufficiently wide, and this leads
Cause the volume of the multidirectional component of single fiber bigger than normal, be not suitable for the SFP modules of standard.When the ripple of two optical signals of common port input
Long λ1And λ2, just can not be by the two adjacent wavelength when the first optical filter 51 and the second optical filter 52 are spaced smaller when being spaced closely together
Effectively separate.
While solution single fiber multidirectional component partial wave multiplex, practical application scene proposes to the overall dimensions of component again
It is required that, it is desirable to its volume is small as far as possible.The multidirectional component of single fiber further narrows down to standard from the XFP module external forms of standard
SFP module external forms.
Utility model content
The utility model purpose is to provide the multidirectional component of single fiber for being easy to separately adjacent wavelength solve two when input
When the wavelength of optical signal is spaced closely together, in order to be separated, the wavelength interval of transmitting terminal and receiving terminal just must be sufficiently wide, and this leads
Cause the volume of the multidirectional component of existing single fiber to need to set larger, be not convenient to use, the SFP modules of standard can not be applied to
The problem of.The utility model proposes the multidirectional component of single fiber for being easy to separately adjacent wavelength, shorter light path can be passed through and obtained
Higher coupling efficiency, can not be by the long-acting basis separated of adjacent wave in the multidirectional component of single fiber for solving the problems, such as small size
On, moreover it is possible to suitable for the SFP modules of standard.It is more to reduce single fiber on the premise of can adjacent wavelength be separated for the utility model
To the volume of component, light path is shortened, is made compacter between its all parts so that the multidirectional transceiver module group of compact single fiber
Part is achieved and effectively used, so that the utility model is applied to the SFP modules of standard.
The utility model is achieved through the following technical solutions：
It is easy to the multidirectional component of single fiber of separately adjacent wavelength, including the multidirectional component body of single fiber, the multidirectional component of single fiber
Body includes input/output terminal, the first transmitting terminal, the second transmitting terminal, the first receiving terminal, the second receiving terminal and is fixed on kernel
Filter set, the input/output terminal can launch the first optical signal and the second optical signal, and first transmitting terminal is launched
3rd optical signal, second transmitting terminal launch the 4th optical signal, and the wavelength of the signal is different each other, and are respectively
λ1、λ2、λ3And λ4, first, second and third and four optical signal there is the ripple of wavelength different from each other, the first optical signal and the second optical signal
The interval of a length of adjacent wavelength, the 3rd optical signal and the 4th wavelength of optical signal is wider.The filter set includes first and filtered
Piece, the second optical filter, the 3rd optical filter and the 4th optical filter, set gradually between the 4th optical filter and the first optical filter
There are negative lens, isolator and sidesway piece；
By the first optical signal of input/output terminal input the second optical filter is reached after the reflection of the first optical filter, and through the
Received after two filter transmissions by the first receiving terminal；
By input/output terminal input the second optical signal successively by the first optical filter reflection, the second optical filter reflection after to
Up to the 3rd optical filter, and received after the 3rd filter transmission by the second receiving terminal；
The 3rd optical signal sent by the first transmitting terminal successively by the 4th optical filter, negative lens, isolator, sidesway piece with
And first optical filter transmission after received by input/output terminal；
The 4th optical signal sent by the second transmitting terminal after the 4th optical filter is put, then successively by negative lens, every
Received from after the transmission of device, sidesway piece and the first optical filter by input/output terminal.
Filter set is fixed on kernel by associated specifications, and kernel is fixedly connected with input/output terminal again, forms one
The individual stand-alone assembly with required optical function.The stand-alone assembly is solid by base metal part and each transmitting terminal, receiving terminal again
Determine into the multidirectional component of complete single fiber.
By the first optical filter, the optical signal of input/output terminal input is separated from main optical path, is divided into the first optical signal
With the second optical signal, the first receiving terminal and the second receiving terminal are sent respectively to, and in the multidirectional component of existing single fiber, input and output
First optical signal of end input reflects via an optical filter being arranged on main optical path, the second light letter of input/output terminal input
Number being arranged on optical filter on main optical path via another reflects, so as to which the first optical signal and the second optical signal be separated, in master
More optical filtering reflector plates is set in light path, the volume of the multidirectional component of single fiber can be lengthened, be unfavorable for the use of the multidirectional component of single fiber；
By the 4th optical filter, the 4th optical signal of the 3rd optical signal of the first transmitting terminal and the second transmitting terminal is synthesized, is keeping high
Coupling efficiency on the premise of, to fold original light path, have compressed light path, it is too far without transmitting terminal and receiving terminal are set,
It is achieved thereby that the topology layout of the multidirectional component of compact single fiber, solves the interference of adjacent wavelength and can not effectively separate adjacent
The problem of difficulty of wavelength, and the strict demand in volume is met, set without that will launch with four wavelength intervals of receiving terminal
Put enough to width.
The 3rd optical signal and the 4th optical signal that first transmitting terminal and the second transmitting terminal are launched respectively share a negative lens,
The negative lens makes the 3rd optical signal and the 4th optical signal be changed into directional light from converged light.First transmitting terminal and the second transmitting terminal difference
The 3rd optical signal and the 4th optical signal of transmitting share isolator and negative lens, for the multidirectional component of existing single fiber,
The utility model is effectively compressed space, realizes the multidirectional component of compact single fiber.
In the prior art, isolator and negative lens are arranged near transmitting terminal or receiving terminal, and in this position, quilt
The optical path that isolator and negative lens are converted into directional light increases, and is unfavorable for reducing its volume and realizes compact purpose, therefore
Isolator and negative lens are arranged on after converging the 3rd optical signal and the 4th optical signal, so that the 3rd optical signal after convergence
It is changed into the optical signal with smaller diameter with the 4th optical signal, improves compactedness, reduces volume.
The sidesway prism used among light path further reduces the volume of the multidirectional component of single fiber.To meet optimal volume
And photoelectric properties, in the optical path between use sidesway prism, light path is produced a sidesway on axis, so as in spatial volume
On, it is uniformly distributed input/output terminal, the first transmitting terminal, the second transmitting terminal, the first receiving terminal and the second receiving terminal；Make light simultaneously
Signal folds in sidesway piece, have compressed light path, and filter set is evenly distributed between each transmitting terminal and receiving terminal,
And finally obtain the cramped construction of the small size of the multidirectional component of single fiber.
When not using sidesway prism, the 4th optical filter is located on main optical path, and the second transmitting terminal and the 4th optical filter it
Between distance can not shorten, therefore the main optical path of the positional distance input/output terminal input of the second transmitting terminal is farther out, is unfavorable for this
The multidirectional component of single fiber is arranged in SFP modules；Under above-mentioned factor, the 4th optical filter and the second transmitting terminal are moved down, and pass through side
Move the luminous energy after piece converges the 4th optical filter to return on main optical path, and shorten the input of the second transmitting terminal distance input output end
Main optical path distance, improve compactedness of the present utility model.
Further, the 3rd optical filter is angle of wedge prism, and its inclined-plane filters towards the second optical filter, and via the 3rd
Piece is transmitted to the optical signal that the optical signal of the second receiving terminal is launched perpendicular to input/output terminal.
Plating is provided with wavelength-division multiplex filter coating in the plane of the 3rd optical filter.
The first optical signal and the second wavelength of optical signal of input/output terminal input are adjacent wavelength, the first receiving terminal, second
Receiving terminal meets optimal photoelectric properties, using the optical filter of low-angle incidence angle；Meanwhile to meet that compact volume requires, second
Optical signal uses the 3rd optical filter of angle of wedge prism to correct incidence angle, so that the light of the 3rd filter transmission to the second receiving terminal
The optical signal that signal is launched perpendicular to input/output terminal, what the reception direction of the second receiving terminal inputted perpendicular to input/output terminal
Optical signal, i.e., the second receiving terminal vertical major direction is arranged, further improve compact of the present utility model, reduce volume.
First optical filter 41 is effective separately by adjacent wave length using the small optical filter of incident angle, so as to effectively reduce into
This.
Further, second optical filter is angle of wedge prism, and its inclined-plane filters towards the first receiving terminal, and via second
Piece is transmitted to the optical signal that the optical signal of the first receiving terminal is launched perpendicular to input/output terminal.
Meanwhile further to meet compact volume requirement, the second optical filter is angle of wedge prism, i.e. the first optical signal uses wedge
Second optical filter of angle prism is to correct incidence angle, so that the optical signal of the second filter transmission to the first receiving terminal is perpendicular to defeated
Enter the optical signal that output end is launched, the optical signal that the reception direction of the first receiving terminal inputs perpendicular to input/output terminal will
First receiving terminal vertical major direction is arranged.
Further, first receiving terminal and the second receiving terminal are photodetector.The principle of photodetector is
Illuminated material electric conductivity is caused to change by radiation.First transmitting terminal and the second transmitting terminal are laser diode.
Whether laser diode is substantially a semiconductor diode, identical according to PN junction material, laser diode can be divided into
Homojunction, single heterojunction (SH), double heterojunction (DH) and SQW (QW) laser diode.
Further, the 3rd optical signal of transmitting terminal and the interval of the 4th wavelength of optical signal are wider, and two transmitting terminals are
Meet optimal volume and photoelectric properties, perpendicular and parallel major axes orientation is laid out using hanging down.
Further, it is the harsh volume requirement of guarantee, critical piece uses patch structure in the multidirectional component of single fiber：Sending out
Penetrate after end is fixed on body, then the auxiliary fixing member at fixed reception end, finally by sticking patch fixed reception end.
Further, the third and fourth optical signal of transmitting terminal shares the isolator in a broadband, and the isolator can be
Polarization it is related or polarization it is unrelated.
The utility model compared with prior art, has the following advantages and advantages：
1st, the utility model is easy to the multidirectional component of the single fiber of separately adjacent wavelength, by the first optical filter, input and output
The optical signal of end input separates, and is divided into the first optical signal and the second optical signal, is sent respectively to the first receiving terminal and second and receives
End；By the 4th optical filter, the 4th optical signal of the 3rd optical signal of the first transmitting terminal and the second transmitting terminal is synthesized, kept
On the premise of high coupling efficiency, to fold original light path, light path is have compressed, it is achieved thereby that the multidirectional component of most compact single fiber
Topology layout；Solve the problems, such as the interference of adjacent wavelength and difficulty that can not be effectively separated, and meet tight in volume
Lattice requirement；
2nd, the utility model is easy to the multidirectional component of the single fiber of separately adjacent wavelength, the first transmitting terminal and the second transmitting terminal difference
Transmitting the 3rd optical signal and the 4th optical signal share a negative lens, the negative lens make the 3rd optical signal and the 4th optical signal from
Converged light is changed into directional light.The 3rd optical signal and the 4th optical signal that first transmitting terminal and the second transmitting terminal are launched respectively share every
From device and negative lens, space is effectively compressed, so as to realize compact structure；
3rd, the utility model is easy to the multidirectional component of the single fiber of separately adjacent wavelength, the first transmitting terminal and the second transmitting terminal difference
Transmitting the 3rd optical signal and the 4th optical signal share a negative lens, the negative lens make the 3rd optical signal and the 4th optical signal from
Converged light is changed into directional light.The 3rd optical signal and the 4th optical signal that first transmitting terminal and the second transmitting terminal are launched respectively share every
From device and negative lens, space is effectively compressed, so as to realize compact structure；
4th, the utility model is easy to the multidirectional component of the single fiber of separately adjacent wavelength, the first optical signal of input/output terminal input
It is adjacent wavelength with the second wavelength of optical signal, the first receiving terminal, the second receiving terminal are met optimal photoelectric properties, entered using low-angle
The optical filter of firing angle；Meanwhile to meet compact volume requirement, the second optical signal uses the 3rd optical filter of angle of wedge prism to correct
Incidence angle, so that the optical signal that the optical signal of the 3rd filter transmission to the second receiving terminal is launched perpendicular to input/output terminal,
The optical signal that the reception direction of second receiving terminal inputs perpendicular to input/output terminal, i.e., by the second receiving terminal vertical major direction cloth
Put, further improve compact of the present utility model, reduce volume.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the application
Part, the restriction to the utility model embodiment is not formed.In the accompanying drawings：
Fig. 1 is the structural representation of the multidirectional component of single fiber in the prior art；
Fig. 2 is structural representation of the present utility model；
Fig. 3 is the structural representation of embodiment 4；
Fig. 4 is assembling structure schematic diagram of the present utility model；
Fig. 5 is exploded perspective view of the present utility model；
Fig. 6 is the utility model and standard SFP housing assembling schematic diagrams.
Mark and corresponding parts title in accompanying drawing：
1- input/output terminals, the transmitting terminals of 21- first, the transmitting terminals of 22- second, the receiving terminals of 31- first, the receiving terminals of 32- second,
The optical filters of 41- first, the optical filters of 42- second, the optical filters of 43- the 3rd, the optical filters of 44- the 4th, 51- negative lenses, 61- isolators,
71- sidesway pieces, 81- kernels, 91- sticking patch, the housing of 101-SFP modules.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, it is not intended as to restriction of the present utility model.
Embodiment 1
As shown in figs 1 to 6, the utility model is easy to the multidirectional component of the single fiber of separately adjacent wavelength, including multidirectional group of single fiber
Part body, the multidirectional component body of single fiber include input/output terminal 1, the first transmitting terminal 21, the second transmitting terminal 22, first and received
The 31, second receiving terminal 32 of end and the filter set that is fixed on kernel, the input/output terminal 1 can launch the first optical signal and
Second optical signal, first transmitting terminal 21 launch the 3rd optical signal, and second transmitting terminal 22 launches the 4th optical signal,
The wavelength of the signal is different each other, and respectively λ1、λ2、λ3And λ4, first, second and third and four optical signal do not have each other not
With wavelength, the wavelength of the first optical signal and the second optical signal is adjacent wavelength, the 3rd optical signal and the 4th wavelength of optical signal
Interval is wider.The filter set includes the first optical filter 41, the second optical filter 42, the 3rd optical filter 43 and the 4th optical filter
44, it is disposed with negative lens 51, isolator 61 and sidesway piece 71 between the 4th optical filter 44 and the first optical filter 41；
The second optical filter 42 is reached after the first optical filter 41 reflects by the first optical signal that input/output terminal 1 inputs,
And received after the transmission of the second optical filter 42 by the first receiving terminal 31；
The second optical signal inputted by input/output terminal 1 reflects by the first optical filter 41 successively, the second optical filter 42 is anti-
The 3rd optical filter 43 is reached after penetrating, and is received after the transmission of the 3rd optical filter 43 by the second receiving terminal 32；
The 3rd optical signal sent by the first transmitting terminal 21 successively by the 4th optical filter 44, negative lens 51, isolator 61,
Received after the transmission of the optical filter 41 of sidesway piece 71 and first by input/output terminal 1；
The 4th optical signal sent by the second transmitting terminal 22 is after the 4th optical filter 44 is put, then passes through negative lens successively
51st, received after the transmission of isolator 61, the optical filter 41 of sidesway piece 71 and first by input/output terminal 1.
Filter set is fixed on kernel by associated specifications, and kernel forms one by strong fixed and input/output terminal again
The individual stand-alone assembly with required optical function.The stand-alone assembly is solid by base metal part and each transmitting terminal, receiving terminal again
Determine into the multidirectional component of complete single fiber.
By the first optical filter 41, the optical signal that input/output terminal 1 inputs is separated, is divided into the first optical signal and the second light
Signal, it is sent respectively to the first receiving terminal 31 and the second receiving terminal 32；By the 4th optical filter 44, by the of the first transmitting terminal 21
4th optical signal of three optical signals and the second transmitting terminal 22 synthesizes, original to fold on the premise of high coupling efficiency is kept
Light path, light path is have compressed, it is achieved thereby that the topology layout of the multidirectional component of most compact single fiber；Solves the interference of adjacent wavelength
With can not be effectively separated difficulty the problem of, and meet the strict demand in volume.
The 3rd optical signal and the 4th optical signal that first transmitting terminal 21 and the second transmitting terminal 22 are launched respectively share one and born
Lens 51, the negative lens 51 make the 3rd optical signal and the 4th optical signal be changed into directional light from converged light.First transmitting terminal 21 and
The 3rd optical signal and the 4th optical signal that two transmitting terminals 22 are launched respectively share isolator 61 and negative lens 51, are effectively compressed sky
Between, so as to realize compact structure.
The sidesway prism used among light path further reduces the volume of the multidirectional component of single fiber.To meet optimal volume
And photoelectric properties, in the optical path between use sidesway prism, light path is produced a sidesway on axis, so as in spatial volume
On, input/output terminal 1, the first transmitting terminal 21, the second transmitting terminal 22, the first receiving terminal 31 and the second receiving terminal 32 is uniformly divided
Cloth, and filter set is evenly distributed between each transmitting terminal and receiving terminal, and finally obtain the compact knot of minimum volume
Structure.
Embodiment 2
The utility model is on the basis of embodiment 1, and the utility model is further illustrated.
As shown in figs 1 to 6, the utility model is easy to the multidirectional component of the single fiber of separately adjacent wavelength, the 3rd optical filter
43 be angle of wedge prism, and its inclined-plane is transmitted to via the 3rd optical filter 43 light of second receiving terminal 32 towards the second optical filter 42
The optical signal that signal is launched perpendicular to input/output terminal 1.
Plating is provided with wavelength-division multiplex filter coating in the plane of the 3rd optical filter 43.
The first optical signal and the second wavelength of optical signal that input/output terminal 1 inputs are adjacent wavelength, the first receiving terminal 31, the
Two receiving terminals 32 meet optimal photoelectric properties, using the optical filter of low-angle incidence angle；Meanwhile to meet compact volume requirement,
Second optical signal uses the 3rd optical filter 43 of angle of wedge prism to be connect to correct incidence angle so that the 3rd optical filter 43 is transmitted to second
The optical signal that the optical signal of receiving end 32 is launched perpendicular to input/output terminal 1, the reception direction of the second receiving terminal 32 is perpendicular to defeated
Enter the optical signal of the input of output end 1, i.e., arrange the vertical major direction of the second receiving terminal 32.
First optical filter 41 is effective separately by adjacent wave length using the small optical filter of incident angle, so as to effectively reduce into
This.
Further, second optical filter 42 is angle of wedge prism, and its inclined-plane is towards the first receiving terminal 31, and via second
Optical filter 42 is transmitted to the optical signal that the optical signal of the first receiving terminal 31 is launched perpendicular to input/output terminal 1.
Meanwhile further to meet compact volume requirement, the second optical filter 42 is angle of wedge prism, i.e. the first optical signal uses
Second optical filter 42 of angle of wedge prism is to correct incidence angle, so that the second optical filter 42 is transmitted to the optical signal of the first receiving terminal 31
The optical signal launched perpendicular to input/output terminal 1, what the reception direction of the first receiving terminal 31 inputted perpendicular to input/output terminal 1
Optical signal, i.e., the vertical major direction of the first receiving terminal 31 is arranged.
First optical signal, the second optical signal, the 3rd optical signal and the 4th optical signal have wavelength different from each other, the first light
The wavelength of signal and the second optical signal is adjacent wavelength, and the wavelength of the 3rd optical signal and the 4th optical signal is wide interval wavelength.The
One optical filter 41 is wide-angle optical filter, by λ1、λ2、λ3、λ4It is divided into λ1、λ2And λ3、λ4Two groups；Second optical filter 42 is low-angle
Optical filter, by adjacent wavelength X1And λ2Separate；4th optical filter 44 is wide-angle optical filter, by wide interval wavelength X3And λ4Separate
Or synthesis.
Embodiment 3
The utility model is on the basis of embodiment 2, and the utility model is further illustrated.
As shown in figs 1 to 6, the utility model is easy to the multidirectional component of the single fiber of separately adjacent wavelength, first receiving terminal
31 and second receiving terminal 32 be photodetector.The principle of photodetector is to cause illuminated material electric conductivity to be sent out by radiation
It is raw to change.The transmitting terminal 22 of first transmitting terminal 21 and second is laser diode.Laser diode is substantially one and half
Conductor diode, it is whether identical according to PN junction material, laser diode can be divided into homojunction, single heterojunction (SH), double different
Matter knot (DH) and SQW (QW) laser diode.
Due to the photodiode of receiving terminal, either avalanche diode can be made very small or very flat；And transmitting terminal
Laser diode has structure of controlling temperature, there is electro-absorption modulation structure due to there is backlight diode, integrally needs to be packaged into bigger
Structure, this be also why on main optical path optical axis, it is necessary to add sidesway piece 71, make one position of main optical path sidesway, that is,
Make the position with reference to the right bottom in figure 2, the first transmitting terminal 21 can be placed；Correspondingly, the position of the second transmitting terminal 22 can be following
Move, so that the structure of black box, reach the purpose of compact.
Further, the 3rd optical signal of transmitting terminal and the interval of the 4th wavelength of optical signal are wider, and two transmitting terminals are
Meet optimal volume and photoelectric properties, perpendicular and parallel major axes orientation is laid out using hanging down.
Further, it is the harsh volume requirement of guarantee, critical piece uses patch structure in the multidirectional component of single fiber：Sending out
Penetrate after end is fixed on body, then the auxiliary fixing member at fixed reception end, last fixed reception end.
Further, the third and fourth optical signal of transmitting terminal shares the isolator in a broadband, and the isolator can be
Polarization it is related or polarization it is unrelated.
Embodiment 4
The utility model is on the basis of embodiment 2, and the utility model is further illustrated.
As shown in figs 1 to 6, the utility model is easy to the multidirectional component of the single fiber of separately adjacent wavelength, when by embodiment
The second optical filter 42 in 2, make the second optical filter of flat sheet type into, due to the optical filter of flat sheet type, cost is than angle of wedge piece type
Optical filter it is low, while the optical filter of flat sheet type is also more conducive to assemble, so overall structure selects flat sheet type or angle of wedge piece type,
Also to be selected according to overall structure requirement and cost requirement.
Embodiment 5
In Fig. 6, all parts equal proportion scaling.As can be seen that the multidirectional component of compact single fiber, can be with standard SFP
Housing perfect cooperation, and leave enough space arrangement circuit boards.The APD of receiving terminal and transmitting terminal (avalanche photodide)
Cut short with LD (laser diode) pin, each pin is all normally collected within SFP enclosure interiors, passes through flexible circuit
Plate is connected on corresponding function circuit board.
Above-described embodiment, the purpose of this utility model, technical scheme and beneficial effect are entered
One step describes in detail, should be understood that and the foregoing is only specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, it is all within the spirit and principles of the utility model, any modification for being made, equally replace
Change, improve, should be included within the scope of protection of the utility model.
Claims (6)
1. it is easy to the multidirectional component of single fiber of separately adjacent wavelength, including the multidirectional component body of single fiber, the multidirectional component sheet of single fiber
Body includes input/output terminal (1), the first transmitting terminal (21), the second transmitting terminal (22), the first receiving terminal (31), the second receiving terminal
(32) and the filter set that is fixed on kernel, the input/output terminal (1) can launch the first optical signal and the second optical signal,
First transmitting terminal (21) launches the 3rd optical signal, and second transmitting terminal (22) launches the 4th optical signal, the letter
Number wavelength it is different each other, and respectively λ1、λ2、λ3And λ4, it is characterised in that：The filter set includes first and filtered
Piece (41), the second optical filter (42), the 3rd optical filter (43) and the 4th optical filter (44), in the 4th optical filter (44) and
Negative lens (51), isolator (61) and sidesway piece (71) are disposed between one optical filter (41)；
By the first optical signal of input/output terminal (1) input the second optical filter is reached after the first optical filter (41) reflection
(42), and after the second optical filter (42) transmission by the first receiving terminal (31) receive；
By the second optical signal of input/output terminal (1) input successively by the first optical filter (41) reflection, the second optical filter (42)
The 3rd optical filter (43) is reached after reflection, and is received after the transmission of the 3rd optical filter (43) by the second receiving terminal (32)；
The 3rd optical signal sent by the first transmitting terminal (21) is successively by the 4th optical filter (44), negative lens (51), isolator
(61), received after the transmission of sidesway piece (71) and the first optical filter (41) by input/output terminal (1)；
The 4th optical signal sent by the second transmitting terminal (22) is after the 4th optical filter (44) is put, then passes through negative lens successively
(51), received after the transmission of isolator (61), sidesway piece (71) and the first optical filter (41) by input/output terminal (1).
2. the single fiber multidirectional component according to claim 1 for being easy to separately adjacent wavelength, it is characterised in that：3rd filter
Mating plate (43) is angle of wedge prism, and its inclined-plane is transmitted to second via the 3rd optical filter (43) and connect towards the second optical filter (42)
The optical signal that the optical signal of receiving end (32) is launched perpendicular to input/output terminal (1).
3. the single fiber multidirectional component according to claim 2 for being easy to separately adjacent wavelength, it is characterised in that：The described 3rd
Plating is provided with wavelength-division multiplex filter coating in the plane of optical filter (43).
4. the single fiber multidirectional component according to claim 1 for being easy to separately adjacent wavelength, it is characterised in that：Second filter
Mating plate (42) is angle of wedge prism, and its inclined-plane is transmitted to first via the second optical filter (42) and connect towards the first receiving terminal (31)
The optical signal that the optical signal of receiving end (31) is launched perpendicular to input/output terminal (1).
5. the multidirectional component of single fiber for being easy to separately adjacent wavelength according to any one of claim 1-4, it is characterised in that：
First receiving terminal (31) and the second receiving terminal (32) are photodetector.
6. the multidirectional component of single fiber for being easy to separately adjacent wavelength according to any one of claim 1-4, it is characterised in that：
First transmitting terminal (21) and the second transmitting terminal (22) are laser diode.
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| CN201720984186.8U CN207008134U (en) | 2017-08-08 | 2017-08-08 | It is easy to the multidirectional component of single fiber of separately adjacent wavelength |
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| CN201720984186.8U CN207008134U (en) | 2017-08-08 | 2017-08-08 | It is easy to the multidirectional component of single fiber of separately adjacent wavelength |
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