CN109188617A - A kind of optical transceiver module and optical module - Google Patents
A kind of optical transceiver module and optical module Download PDFInfo
- Publication number
- CN109188617A CN109188617A CN201811091283.XA CN201811091283A CN109188617A CN 109188617 A CN109188617 A CN 109188617A CN 201811091283 A CN201811091283 A CN 201811091283A CN 109188617 A CN109188617 A CN 109188617A
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- CN
- China
- Prior art keywords
- transceiver module
- material layer
- absorbing material
- optical
- optical transceiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4246—Bidirectionally operating package structures
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4274—Electrical aspects
- G02B6/428—Electrical aspects containing printed circuit boards [PCB]
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The present invention relates to a kind of optical transceiver module and optical modules, the optical transceiver module includes optical module and PCB main board and flexible PCB, optical module includes light emitting and light-receiving component, light emission component is connected by transmitting terminal flexible PCB with mainboard, and light-receiving component is connected by receiving end flexible PCB with mainboard.The substrate surface of the transmitting terminal flexible PCB and/or receiving end flexible PCB is equipped with absorbing material layer.Change the original transmission path of electromagnetic wave using absorber characteristic.Transmitting terminal can reduce the radiation energy into space, and receiving end is also reduced simultaneously from the interference signal received in the air, and then reduces interference, improve signal quality.
Description
Technical field
The present invention relates to electronic technology fields, and in particular to a kind of optical transceiver module and optical module.
Background technique
Printed wiring board (Printed Circuit Board, abbreviation PCB), also referred to as printed board is electronics industry
One of important component.Printed board is furnished with conducting wire using insulation board as substrate, realizes the interconnection between electronic device.
The major function of optical module is to realize photoelectricity/electro-optical conversion, is the important component of optical fiber telecommunications system, just answers in optical module
With printed wiring board.Such as in optical transceiver module, light emission component (Transmitter Optical Subassembly,
Abridge TOSA) and light-receiving component (Receiver Optical Subassembly, abbreviation ROSA) pass through a piece of flexibility respectively
Printed wiring board is connected to PCB main board, sees Fig. 1.However, in existing optical transceiver module, transmitting terminal TOSA and reception
The signal of the adagio surface leakage of end ROSA can generate electromagnetic field in space, cause to interfere with each other.Specifically, as shown in Fig. 2,
By taking receiving end as an example, the signal of transmitting terminal leakage generates electromagnetic field in space, and the magnetic line of force passes through flexible printed circuit board and ginseng
The loop on stratum is examined, induced current can be generated on PCB, being added in original signal influences signal transmission quality, reduces and receives
The sensitivity at end.
Summary of the invention
It is an object of the invention to reduce the transmitting terminal in the presence of the prior art to receiving the strong of end spaces interference signal
Degree provides a kind of optical transceiver module and optical module, can reduce interference, improve the sensitivity of receiving end.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of optical transceiver module, including optical module and PCB main board, optical module include light emission component and light-receiving group
Part, light emission component are connect by transmitting terminal pcb board with the PCB main board, light-receiving component pass through receiving end pcb board with it is described
PCB main board connection, the substrate surface of the transmitting terminal pcb board are equipped with absorbing material layer, and/or, the receiving end pcb board
Substrate surface is equipped with absorbing material layer.
It is traditional for high-frequency interferencing signal, copper or aluminium etc. is light, easy processing high conductivity material can provide enough
Shield effectiveness.But, under low frequency condition, the reflection loss and absorption loss in magnetic field are all very low.Therefore, it is difficult to pass through shielding
Body is influenced to protect circuit not by low frequency magnetic field.In this type of application, using the high permeability materials effect with low magnetic resistance
Most preferably.This kind of low magnetoresistance material provides leakage path, and magnetic field can be made to deviate protected circuit.I other words leading in above scheme
It crosses and absorbing material layer is set on substrate, the transmission direction of the electromagnetic wave of leakage can be made to change, cannot pass through printed wiring board,
Then induced current cannot be formed, avoids interfering, influences the reception or transmitting of signal.By in adagio (flexible circuit board)
Substrate surface be arranged absorbing material layer, can to avoid receiving end reveal signal transmitting terminal is interfered, by adagio
Substrate surface be arranged absorbing material layer, can to avoid transmitting terminal reveal signal receiving end is interfered.
In preferred scheme, the perceptual magnetic conductivity of the absorbing material layer is 100~150.It can allow enter and inhale wave material
Signal in the bed of material preferably transmits.
In preferred scheme, the resistive magnetic conductivity of the absorbing material layer is 7~13.Resistive magnetic conductivity it is lower can more into
One step reduces magnetic field and enters the resistance encountered when absorbing material.
In preferred scheme, the front and back of substrate is equipped with the absorbing material layer.Further enhance anti-signal
Crosstalk effect.
On the other hand, the present invention also provides a kind of optical module, including shell and above-mentioned optical transceiver module, the light transmitting-receivings
Component is installed in the shell.
Compared with prior art, optical transceiver module of the present invention, by being set on the substrate or sensitive circuit of printed wiring board
Set absorbing material layer, thus it is possible to vary the transmission direction of the electromagnetic wave of leakage cannot pass through printed wiring board, cannot then form sense
Electric current is answered, achievees the effect that the electromagnetic wave of leakage is " absorbed ", avoids interfering.It, can such as when being applied to optical module
To reduce the crosstalk of transmitting terminal to receiving end, the sensitivity of receiving end is improved.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the overlooking structure diagram of optical transceiver module described in embodiment.
Fig. 2 is the transmission path schematic diagram for the electromagnetic wave revealed in conventional printed wiring board.
Fig. 3 is the transmission path schematic diagram for the electromagnetic wave revealed in printed wiring board described in embodiment.
Description of symbols in figure
Flexible circuit board 100, flexible base board 101, absorbing material layer 102, light-receiving component 200, light emission component 300,
PCB main board 400, receiving end optical assembly power supply circuit region 401.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Referring to Fig. 1, Fig. 1 is the top view of optical transceiver module, it is only illustrative.The present embodiment schematically discloses
A kind of optical transceiver module, including optical module and PCB main board 400, wherein optical module includes light emission component 300
(Transmitter Optical Subassembly, abridge TOSA) and (the Receiver Optical of light-receiving component 200
Subassembly, abridge ROSA), light emission component 300 is connect by transmitting terminal pcb board with the PCB main board 400, light-receiving
Component 200 is connect by receiving end pcb board with the PCB main board 400.
In the present embodiment, the transmitting terminal pcb board and the receiving end pcb board are flexible circuit board 100.The flexibility
Wiring board 100 includes flexible base board 101, and the surface of flexible base board 101 is equipped with absorbing material layer 102.I other words the present embodiment
In, 101 surface of flexible base board of the transmitting terminal pcb board is equipped with absorbing material layer 102, the flexible base board of receiving end pcb board
101 surfaces are also equipped with absorbing material layer 102, can be to avoid transmitting terminal and receiving end to mutual interference.If only in transmitting terminal
101 surface of flexible base board of pcb board is laid with absorbing material layer 102, or only on 101 surface of flexible base board of receiving end pcb board
Also it is laid with absorbing material layer 102 and feasible, but in contrast anti-interference ability is weaker.In addition, by flexible base board
101 front and back is laid with absorbing material layer 102 simultaneously, compared to only in one side (front or the back side) laying absorbing material layer
For 102, anti-signal cross-talk better effect.
The absorbing material for constituting absorbing material layer 102 can be high molecular polymer, magnetic ferrum nano material, high magnetic permeability
Material etc..It is directed in optical module application, preferably the perceptual magnetic conductivity of absorbing material layer 102 is 100~150, can allow entrance
It is preferably transmitted to the signal in absorbing material layer 102.The resistive magnetic conductivity of absorbing material layer 102 is preferably 10 or so, such as
It is all preferably to select that resistive magnetic conductivity, which is 7~13, and the lower magnetic field that can further reduce of resistive magnetic conductivity enters suction wave material
The resistance encountered when material.
As shown in Fig. 2, the electromagnetic wave of transmitting terminal (only by taking transmitting terminal as an example) leakage can pass through in traditional optical transceiver module
Flexible circuit board 100 then generates induced current inside PCB main board, and induced current interferes receiving end, to influence
The sensitivity of receiving end.
As shown in figure 3, by the setting of absorbing material layer 102, changing the electromagnetic wave of transmitting terminal leakage in the present embodiment
Transmission direction, so that it is cannot pass through printed wiring board, cannot then form induced current, reach the electromagnetic wave of leakage and " inhaled
The effect of receipts ", and then the influence even being eliminated to receiving end can be reduced, improve the sensitivity of receiving end.
In the present embodiment only by taking the flexible circuit board 100 applied in optical module as an example, illustrate by 101 table of flexible base board
Face setting absorbing material layer 102 can reduce the Electromagnetic Interference revealed between component, likewise, can also be in PCB main board
Surface, especially sensitive circuit region be arranged absorbing material layer 102, achieve the effect that reduce Electromagnetic Interference.Such as
Shown in Fig. 1, receiving end optical assembly power supply circuit region 401 is also equipped with absorbing material layer, likewise, can also emit
End optical assembly power supply circuit region is also equipped with absorbing material layer.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.
Claims (8)
1. a kind of optical transceiver module, including optical module and PCB main board, optical module includes light emission component and light-receiving group
Part, light emission component are connect by transmitting terminal pcb board with the PCB main board, light-receiving component pass through receiving end pcb board with it is described
PCB main board connection, which is characterized in that the substrate surface of the transmitting terminal pcb board is equipped with absorbing material layer, and/or, it is described to connect
The substrate surface of receiving end pcb board is equipped with absorbing material layer.
2. optical transceiver module according to claim 1, which is characterized in that the perceptual magnetic conductivity of the absorbing material layer is
100~150.
3. optical transceiver module according to claim 1, which is characterized in that the resistive magnetic conductivity of the absorbing material layer is 7
~13.
4. optical transceiver module according to claim 1, which is characterized in that the front and back of substrate is equipped with the suction
Wave material layer.
5. optical transceiver module according to claim 1, which is characterized in that the absorbing material for forming the absorbing material layer is
High molecular polymer.
6. optical transceiver module according to claim 1, which is characterized in that the transmitting terminal pcb board and the receiving end PCB
Plate is flexible circuit board.
7. -6 any optical transceiver module according to claim 1, which is characterized in that be disposed with power supply on the PCB main board
The power supply circuit region of circuit, the PCB main board is equipped with absorbing material layer.
8. a kind of optical module, including shell, which is characterized in that further include optical transceiver module as claimed in claim 1 to 7, institute
Optical transceiver module is stated to be installed in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091283.XA CN109188617A (en) | 2018-09-19 | 2018-09-19 | A kind of optical transceiver module and optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091283.XA CN109188617A (en) | 2018-09-19 | 2018-09-19 | A kind of optical transceiver module and optical module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109188617A true CN109188617A (en) | 2019-01-11 |
Family
ID=64908132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811091283.XA Pending CN109188617A (en) | 2018-09-19 | 2018-09-19 | A kind of optical transceiver module and optical module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109188617A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101010609A (en) * | 2004-09-02 | 2007-08-01 | 日本电气株式会社 | Photoelectric composite module |
| CN204405902U (en) * | 2014-12-31 | 2015-06-17 | 苏州旭创科技有限公司 | Optical module |
-
2018
- 2018-09-19 CN CN201811091283.XA patent/CN109188617A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101010609A (en) * | 2004-09-02 | 2007-08-01 | 日本电气株式会社 | Photoelectric composite module |
| CN204405902U (en) * | 2014-12-31 | 2015-06-17 | 苏州旭创科技有限公司 | Optical module |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190111 |