CN207336854U - A kind of four-way coarse wavelength division multiplexing QSFP optical modules - Google Patents
A kind of four-way coarse wavelength division multiplexing QSFP optical modules Download PDFInfo
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- CN207336854U CN207336854U CN201721184914.3U CN201721184914U CN207336854U CN 207336854 U CN207336854 U CN 207336854U CN 201721184914 U CN201721184914 U CN 201721184914U CN 207336854 U CN207336854 U CN 207336854U
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Abstract
It the utility model is related to optical communication network module field, provide a kind of four-way coarse wavelength division multiplexing QSFP optical modules, including QSFP bases and four transmitting sub- devices of optics, four transmitting sub- devices of optics are installed on the base parallel, and have gap between each transmitting sub- device of optics and the base；The QSFP optical modules further include the coarse wavelength division multiplexing optical module of the four road optical signal multiplexings for four transmitting sub- devices of optics to be launched, the coarse wavelength division multiplexing optical module includes being used for the single fiber tail optical fiber that multiplexed optical signal transmission is gone out, and the single fiber tail optical fiber is at least partially disposed in the gap.A kind of four-way coarse wavelength division multiplexing QSFP optical modules of the utility model, it will be connected between the sub- device of four transmitting optics and coarse wavelength division multiplexing optical module using rational Optical Fiber Winding mode, solve the problems, such as to realize that the Single-Mode Fiber Coupling of 4 LD is difficult in small space.
Description
Technical field
Optical communication network module field is the utility model is related to, is specially a kind of four-way coarse wavelength division multiplexing QSFP optical modes
Block.
Background technology
QSFP (QSFP+, QSFP28) is a kind of predominant package form of current 40G/100G optical modules, inside it, electricity
The transmission of 40G and 100G speed is realized in transmission using the parallel transmission mode of 4*10G/4*25G, and exterior optical interface, then can use 4
The LC interfaces of the parallel MT interfaces of road optical fiber or single fiber multiplex mode, for single fiber multiplex mode, using CWDM wavelength
Coarse wavelength division multiplexing is more extensive due to its economy application.
Due to realize the multiplexing and demultiplexing of 4 wavelength in inside modules, encapsulation technology traditional at present is using integrated
Mode 4 LD and 4 PD are integrated in TOSA and ROSA respectively, TOSA and ROSA are connected to pcb board by FPC again.
In this technical solution, the size of TOSA package shell is typically designed to the width of 5.6~7mm, due to will so it is narrow and small
The Single-Mode Fiber Coupling of 4 LD is carried out under TOSA package shell, design and processes realize difficulty, and manufacture efficiency is low, causes to manufacture
Of high cost, output is low, and since each LD chips and its light path are integrated in together, the failure of any one passage can all cause
The failure of whole device, therefore yield is low, further results in cost rise.
Therefore it is badly in need of providing a kind of QSFP optical module structures that technique easily realizes to solve above-mentioned TOSA coupled problems.
Utility model content
The purpose of this utility model is to provide a kind of four-way coarse wavelength division multiplexing QSFP optical modules, launch optics by four
Connected, solved real in small space using rational Optical Fiber Winding mode between sub- device and coarse wavelength division multiplexing optical module
The problem of Single-Mode Fiber Coupling of existing 4 LD is difficult.
To achieve the above object, the utility model embodiment provides following technical solution：A kind of four-way coarse wavelength division multiplexing
QSFP optical modules, including QSFP bases and four transmitting sub- devices of optics, four transmitting sub- devices of optics are pacified parallel
On the base, and there is gap between each transmitting sub- device of optics and the base；The QSFP optical modules
The coarse wavelength division multiplexing optical module of the four road optical signal multiplexings for four transmitting sub- devices of optics to be launched is further included,
The coarse wavelength division multiplexing optical module includes being used for the single fiber tail optical fiber that multiplexed optical signal transmission is gone out, the single fiber
Tail optical fiber is at least partially disposed in the gap.
Further, the coarse wavelength division multiplexing light-receiving component for receiving multiplexed optical signal, the thick wavelength-division are further included
Multiplexed optical receiving unit includes demultiplexer, four light-receiving PD and on the base close to four transmitting light
The housing of scholar's device, the demultiplexer and four light-receiving PD are integrated in the housing.
Further, the coarse wavelength division multiplexing optical module further includes array fibre and array waveguide grating, the array
Waveguide optical grating connects with the array fibre and is respectively positioned on the wherein side of the housing；There are the array fibre four to lead to
Road；Four transmitting sub- devices of optics are located at the base along the sub- device of optics of launching to the array waveguide grating
The centre position of orientation.
Further, side of the housing away from the transmitting sub- device of optics is provided with LC adapters, the single fiber
One end of tail optical fiber is connected with the array waveguide grating, and the other end of the single fiber tail optical fiber is connected with the LC adapters.
Further, the single fiber tail optical fiber include sequentially connected first arc section, first straight line section, the second arc section with
And second straight line section, the housing are connected with the first straight line section by first arc section, the second arc section portion
Subpackage is around the housing and is placed in the gap, and the second straight line section is located at the same side with the housing and is fitted with the LC
Orchestration connects.
Further, the first straight line section and the array waveguide grating are located at the opposite sides of the housing respectively,
And the first straight line section extends along a side of the housing.
Further, four fiber stubs are equipped between the housing and four transmitting sub- devices of optics, described in four
The transmitting sub- device of optics is respectively provided with LC type sockets, and four fiber stubs and four LC types sockets correspond, any
The fiber stub is installed on the corresponding LC types socket；The optical signal that each transmitting sub- device of optics is launched leads to
The optical fiber for crossing the corresponding fiber stub is transferred to the coarse wavelength division multiplexing optical module.
Further, four optical fiber be at least partially disposed at the array fibre and the array waveguide grating just under
Side.
Further, the first rigid circuit board is installed on the base, first rigid circuit board is electrically connected with first
Flexible PCB, first flexible PCB are electrically connected with the coarse wavelength division multiplexing light-receiving component；First rigid electric
On the plate of road the second flexible PCB, four transmitting optics are electrically connected with close to the position of four transmitting sub- devices of optics
Sub- device is electrically connected with second flexible PCB.
Further, the second rigid circuit board is equipped between first rigid circuit board and the base, described second is firm
Property circuit board is connected with first rigid circuit board by the 3rd flexible PCB.
Compared with prior art, the beneficial effects of the utility model are：A kind of four-way coarse wavelength division multiplexing QSFP optical modules,
Produce optical signal and use four independent sub- devices of transmitting optics, avoid each light path and integrate, any one passage
Failure can all cause the situation of the failure of whole optical module to occur, and improve yield, and four independent sub- devices of transmitting optics
Realize that technical maturity, high yield rate, efficiently solves the single mode optical fiber coupling that integration mode is brought using the coaxial technique of standard
Close the problem of difficult；Demultiplexer more low-loss than array waveguide grating is employed in coarse wavelength division multiplexing light-receiving component, is carried
The sensitivity of receiving terminal is risen, and technique is easily realized relatively.
Brief description of the drawings
Fig. 1 is a kind of structural representation for four-way coarse wavelength division multiplexing QSFP optical modules that the utility model embodiment provides
Figure；
Fig. 2 is that a kind of four-way coarse wavelength division multiplexing QSFP optical modules that the utility model embodiment provides are mounted with that second is firm
Structure diagram after property circuit board.
In reference numeral：1- launches the sub- device of optics；2- bases；3- gaps；4- coarse wavelength division multiplexing optical modules；40- is mono-
Optical fiber pigtail；41- array waveguide gratings；42- array fibres；5- coarse wavelength division multiplexing light-receiving components；50- housings；6-LC is adapted to
Device；The first arc sections of 70-；71- first straight line sections；The second arc sections of 72-；73- second straight line sections；8- optical fiber；80- optical fiber is inserted
Core；81-LC type sockets；The first rigid circuit boards of 90-；The first flexible PCBs of 91-；The second flexible PCBs of 92-；94- second
Rigid circuit board；The 3rd flexible PCBs of 95-.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
The all other embodiment obtained, shall fall within the protection scope of the present invention.
Please refer to Fig.1 and Fig. 2, the utility model embodiment provide a kind of four-way coarse wavelength division multiplexing QSFP optical modules, bag
QSFP bases 2 and four transmitting sub- devices 1 of optics are included, four transmitting sub- devices 1 of optics are installed in QSFP bases 2 parallel
On, and there is gap 3 between the sub- device 1 of each transmitting optics and base 2；Four transmitting the sub- devices 1 of optics models can be
TO38, its single channel rate can reach 25Gb/s；The QSFP optical modules are further included for four transmitting sub- devices 1 of optics to be sent out
The coarse wavelength division multiplexing optical module 4 for the four road optical signal multiplexings projected, coarse wavelength division multiplexing optical module 4, which has, to be used for after multiplexing
The single fiber tail optical fiber 40 gone out of optical signal transmission, single fiber tail optical fiber 40 is at least partially disposed in gap 3.Optical signal is produced to use
Four sub- devices 1 of independent transmitting optics, avoid each light path and integrate, the failure of any one passage can all cause whole
The situation of the failure of a optical module occurs, and improves yield.Existing QSFP bases 2 are standards, when at limited QSFP bottoms
Four transmittings optics device 1, coarse wavelength division multiplexing optical module 4 and coarse wavelength division multiplexing light-receiving groups have been disposed in 2 spaces of seat
After part 5, the space placed for single fiber tail optical fiber 40 can be compressed to minimum degree, in order to ensure the winding of single fiber tail optical fiber 40
Radius, the canoe that the present embodiment uses can solve this technical barrier, i.e.,：Make the part of single fiber tail optical fiber 40 from transmitting
Being passed through between the sub- device 1 of optics and base 2, so design can also avoid interfering with four transmitting sub- devices 1 of optics, and four
The transmitting sub- device 1 of optics can also play limitation single fiber tail optical fiber 40, prevent its tilting, the effect of constraint single fiber tail optical fiber 40.
Further optimize such scheme, the thick wavelength-division that this QSFP optical modules further include for receiving multiplexed optical signal is answered
With light receiving unit 5, which includes demultiplexer, four light-receiving PD and installed in base 2
The upper housing 50 close to four transmitting sub- devices 1 of optics, demultiplexer and four light-receiving PD are integrated in housing 50.Slightly
The purpose of wavelength division multiplexed light receiving unit 5 is to receive the optical signal that other optical modules transmit, then will be multiple using demultiplexer
Optical signal disassembles, and housing 50 is installed on base 2, it is located at the right side of four transmitting sub- devices 1 of optics in Fig. 1, solution
Multiplexer and four light-receiving PD are integrated in housing 50.Receiving terminal improves the spirit of receiving terminal by the way of integrated
Sensitivity, so as to improve yield rate and production efficiency.Coarse wavelength division multiplexing light-receiving component 5 is connected with LC adapters 6, be easy to and its
He connects optical module.
Further optimize such scheme, coarse wavelength division multiplexing optical module 4 further includes array fibre 42 and Waveguide array light
Grid 41, array waveguide grating 41 connect with array fibre 42 and are respectively positioned on the wherein side of housing 50, and array fibre 42 has four
A passage.Array waveguide grating 41 is strip, reduces the space occupied.Four above-mentioned transmitting sub- devices of optics are located at base
Along the transmitting sub- device of optics to the centre position of the orientation of array waveguide grating, overcome in the prior art because of front space
It is narrow, and can not allow their technical problems in one line.Array fibre 42 has four passages, in practice, they
The optical signal that transmitting terminal is sent can be received at the same time, and optical signal is multiplexed into an optical signal by array waveguide grating.
Further optimize such scheme, please refer to Fig.1 and Fig. 2, side of the housing 50 away from the transmitting sub- device 1 of optics are installed
There are LC adapters 6, one end of single fiber tail optical fiber 40 is connected with array waveguide grating 41, and the other end and the LC of single fiber tail optical fiber 40 are fitted
Orchestration 6 connects.
Further optimize such scheme, please refer to Fig.1 and Fig. 2, in order to solve that the list of four LD is realized in small space
The problem of mode fiber coupling is difficult, need to use rational Optical Fiber Winding mode.Single fiber tail optical fiber 40 includes sequentially connected first
Arc section 70, first straight line section 71, the second arc section 72 and second straight line section 73, wherein, housing 50 and first straight line section 71
Connected by the first arc section 70,72 part of the second arc section wraps housing 50 and is placed in gap 3, second straight line section 73 and shell
Body 50 is located at the same side and is connected with LC adapters 6.Second arc section 72 can also be straightway or other shapes, it is only necessary to its
In gap 3.Using above-mentioned canoe can the interior winding radius for ensureing single fiber tail optical fiber 40 in a limited space,
And it can avoid interfering with four transmitting sub- devices 1 of optics, solve the single mode optical fiber coupling that 4 LD are realized in small space
Close the problem of difficult, four transmitting sub- devices 1 of optics can also limit single fiber tail optical fiber 40, prevent its tilting, it is single to play constraint
The effect of optical fiber pigtail 40.
Further optimize such scheme, first straight line section 71 and array waveguide grating 41 are respectively positioned at the opposite of housing 50
Both sides, and first straight line section 71 extends along a side of housing 50.Second straight line section 73 can also prolong along a side of housing 50
Stretch.
As the prioritization scheme of the present embodiment, inserted between housing 50 and four transmitting sub- devices 1 of optics equipped with four optical fiber
Core 80, four transmitting sub- devices 1 of optics are respectively provided with LC types socket 81, and four fiber stubs 80 and four LC types sockets 81 1 are a pair of
Should, either fiber lock pin 80 is installed on corresponding LC types socket 81；The optical signal that each transmitting sub- device 1 of optics is launched leads to
The optical fiber 8 for crossing corresponding fiber stub 80 is transferred to coarse wavelength division multiplexing optical module 4.Four fiber stubs 80 are optical fiber ceramic
Lock pin, four LC types sockets 81 are LC type ceramics sockets so that any one element loss can during the manufacturing
Flexibly replaced, substantially increase the yield of product.
Further optimize such scheme, please refer to Fig.1 and Fig. 2, four optical fiber 8 be at least partially disposed at array fibre 42 and
Immediately below array waveguide grating 41.Coarse wavelength division multiplexing optical module 4 is strip, such as Fig. 2, coarse wavelength division multiplexing optical module 4
In the sub- left side of device 1 of transmitting optics, and device 1 more sub- than transmitting optics and coarse wavelength division multiplexing light-receiving component 5 are all high.Four optical fiber
The similar ellipse of 8 winding shape, after fiber stub 80 extends out, first extends to array fibre 42 and Waveguide array light
Immediately below grid 41, then the wraparound in a manner of ellipse, is connected to array fibre 42.Each optical fiber 8 is always positioned at each hair
The top of the sub- device 1 of optics and housing 50 is penetrated, can avoid sending out from the single fiber tail optical fiber 40 that the sub- lower section of device 1 of transmitting optics passes through
Raw interference；Each optical fiber 8 at least part, can be by array ripple immediately below array fibre 42 and array waveguide grating 41
Guide grating 41 and array fibre 42 constrain it.Since the height of housing 50 is slightly less than any one transmitting sub- device 1 of optics
Highly, it can so ensure that four optical fiber 8 after winding can hold level with both hands.In order to avoid four optical fiber 8 scatter, can be tied up using bandage
Play constraint.
As the prioritization scheme of the present embodiment, please refer to Fig.1 and Fig. 2, the first rigid circuit board 90 be installed on base 2,
First rigid circuit board 90 is electrically connected with the first flexible PCB 91, first flexible PCB 91 and the thick wavelength-division
Multiplexed optical receiving unit 5 is electrically connected；Close to the position of four transmitting sub- devices 1 of optics on first rigid circuit board 90
The second flexible PCB 92 is electrically connected with, four transmitting sub- devices 1 of optics are electrically connected with second flexible PCB 92.
The purpose of wherein the first flexible PCB 91 is the high speed for coarse wavelength division multiplexing light-receiving component 5 and the first rigid circuit board 90
Be electrically connected, the second flexible PCB 92 has two, one of them second flexible PCB 92 with figure on the inside of paper two
A transmitting sub- device 1 of optics is electrically connected, and is then realized and is electrically connected with the high speed of the first rigid circuit board 90, similarly two other is sent out
Penetrate the sub- device 1 of optics to be electrically connected with the high speed of the first rigid circuit board 90 by another second flexible PCB 92, finally
Realize that each electrical equipment is electrically connected with the two components.
Further optimize such scheme, referring to Fig. 2, being equipped with the second rigidity between the first rigid circuit board 90 and base 2
Circuit board 94, the second rigid circuit board 94 are connected with the first rigid circuit board 90 by the 3rd flexible PCB 95.By this
Structure, can increase the installation site of other electrical equipments, more easy to install dexterously using the space on vertical direction
Electrical equipment.If element is few, the second rigid circuit board 94 of installation can not also be used.
While there has been shown and described that the embodiment of the utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from the principle of the utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (10)
1. a kind of four-way coarse wavelength division multiplexing QSFP optical modules, including QSFP bases and four transmitting sub- devices of optics, it is special
Sign is：Four transmitting sub- devices of optics are installed on the base parallel, and each transmitting sub- device of optics
There is gap between the base；The QSFP optical modules are further included for four transmitting sub- devices of optics to be launched
Four road optical signals multiplexings coarse wavelength division multiplexing optical module, the coarse wavelength division multiplexing optical module includes being used for will be multiplexed
The single fiber tail optical fiber that optical signal transmission is gone out, the single fiber tail optical fiber are at least partially disposed in the gap.
A kind of 2. four-way coarse wavelength division multiplexing QSFP optical modules as claimed in claim 1, it is characterised in that：Further include for connecing
Receive the coarse wavelength division multiplexing light-receiving component of multiplexed optical signal, the coarse wavelength division multiplexing light-receiving component include demultiplexer,
Four light-receiving PD and close four housings for launching the sub- device of optics on the base, the demultiplexer
And four light-receiving PD are integrated in the housing.
A kind of 3. four-way coarse wavelength division multiplexing QSFP optical modules as claimed in claim 2, it is characterised in that：The thick wavelength-division is answered
Further include array fibre and array waveguide grating with optical module, the array waveguide grating connected with the array fibre and
It is respectively positioned on the wherein side of the housing；The array fibre has four passages；Four transmitting sub- devices of optics are located at
The centre position of orientation of the base along the transmitting sub- device of optics to the array waveguide grating.
A kind of 4. four-way coarse wavelength division multiplexing QSFP optical modules as claimed in claim 3, it is characterised in that：The housing is remote
The side of the transmitting sub- device of optics is provided with LC adapters, one end and the array waveguide grating of the single fiber tail optical fiber
Connection, the other end of the single fiber tail optical fiber are connected with the LC adapters.
A kind of 5. four-way coarse wavelength division multiplexing QSFP optical modules as claimed in claim 4, it is characterised in that：The single fiber tail
Fibre includes sequentially connected first arc section, first straight line section, the second arc section and second straight line section, the housing and described
First straight line section is connected by first arc section, and second circular arc segment section wraps the housing and is placed in the gap
Interior, the second straight line section is located at the same side with the housing and is connected with the LC adapters.
A kind of 6. four-way coarse wavelength division multiplexing QSFP optical modules as claimed in claim 5, it is characterised in that：The first straight line
Section and the array waveguide grating are located at the opposite sides of the housing respectively, and the first straight line section is along the housing
A side extends.
A kind of 7. four-way coarse wavelength division multiplexing QSFP optical modules as claimed in claim 3, it is characterised in that：The housing and four
Four fiber stubs are equipped between a transmitting sub- device of optics, four transmitting sub- devices of optics are respectively provided with LC types and insert
Mouthful, four fiber stubs and four LC types sockets correspond, and any fiber stub is installed in corresponding institute
State on LC type sockets；The optical fiber that the optical signal that each transmitting sub- device of optics is launched passes through the corresponding fiber stub
It is transferred to the coarse wavelength division multiplexing optical module.
A kind of 8. four-way coarse wavelength division multiplexing QSFP optical modules as claimed in claim 7, it is characterised in that：Four optical fiber
It is at least partially disposed at the underface of the array fibre and the array waveguide grating.
A kind of 9. four-way coarse wavelength division multiplexing QSFP optical modules as claimed in claim 2, it is characterised in that：Pacify on the base
Equipped with the first rigid circuit board, first rigid circuit board is electrically connected with the first flexible PCB, first flexible circuit
Plate is electrically connected with the coarse wavelength division multiplexing light-receiving component；Close to four transmitting optics on first rigid circuit board
The position of device is electrically connected with the second flexible PCB, four transmitting sub- devices of optics and second flexible PCB electricity
Connection.
A kind of 10. four-way coarse wavelength division multiplexing QSFP optical modules as claimed in claim 9, it is characterised in that：Described first is firm
Property circuit board and the base between be equipped with the second rigid circuit board, second rigid circuit board and first rigid circuit
Plate is connected by the 3rd flexible PCB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721184914.3U CN207336854U (en) | 2017-09-15 | 2017-09-15 | A kind of four-way coarse wavelength division multiplexing QSFP optical modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721184914.3U CN207336854U (en) | 2017-09-15 | 2017-09-15 | A kind of four-way coarse wavelength division multiplexing QSFP optical modules |
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| Publication Number | Publication Date |
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| CN207336854U true CN207336854U (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721184914.3U Active CN207336854U (en) | 2017-09-15 | 2017-09-15 | A kind of four-way coarse wavelength division multiplexing QSFP optical modules |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479150A (en) * | 2017-09-15 | 2017-12-15 | 武汉联特科技有限公司 | A kind of four-way CWDM QSFP optical modules |
-
2017
- 2017-09-15 CN CN201721184914.3U patent/CN207336854U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479150A (en) * | 2017-09-15 | 2017-12-15 | 武汉联特科技有限公司 | A kind of four-way CWDM QSFP optical modules |
| CN107479150B (en) * | 2017-09-15 | 2020-12-04 | 武汉联特科技有限公司 | Four-channel coarse wavelength division multiplexing QSFP optical module |
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Address after: 430000 building 12, Block E, 52 Liufang Avenue, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee after: Wuhan Liante Technology Co.,Ltd. Address before: 430000 2nd floor, building 1, Putian, China, No.20, daxueyuan Road, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee before: Linktel Technologies Co.,Ltd. |
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