CN208113040U - A kind of light source drive device for PIN-FET coupling - Google Patents
A kind of light source drive device for PIN-FET coupling Download PDFInfo
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- CN208113040U CN208113040U CN201820441882.9U CN201820441882U CN208113040U CN 208113040 U CN208113040 U CN 208113040U CN 201820441882 U CN201820441882 U CN 201820441882U CN 208113040 U CN208113040 U CN 208113040U
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Abstract
The utility model relates to a kind of light source drive devices for PIN-FET coupling, it is internal with light source (4), light source (4) output end is connect with PIN-FET detector (8), the device includes voltage regulator circuit (1), sine wave oscillation circuit (2) and amplification driving circuit (3), voltage regulator circuit (1) output end is powered to sine wave oscillation circuit (2) and amplification driving circuit (3), sine wave oscillation circuit (2) output end is connect with amplification driving circuit (3), the amplification driving circuit (3) is by sine-wave superimposed to light source (4), form optical signal.Compared with prior art, the utility model can complete light source in the market cannot function, by sine-wave superimposed into light source, and carry out the decaying of optical power；Convenient for the state of monitoring detector coupling, reach the voltage responsive degree of requirement, improves qualification rate；The quality of PIN-FET detector internal circuit and optical path can be fed back simultaneously.
Description
Technical field
The utility model relates to a kind of light source drive devices, drive more particularly, to a kind of light source for PIN-FET coupling
Dynamic device.
Background technique
PIN-FET detector has photoelectric conversion region and the signal output area region Liang Zhong.Photoelectric conversion regions mainly will
Optical signal is converted into electric signal, and signal output area is exported again after the electric signal that will convert into amplifies.Therefore its is main
Purposes is optical fibre gyro, fibre optical sensor, coherent fiber chromatographic imaging system.
The coupling of PIN-FET detector is again the most key process.The coupling of PIN-FET detector is by oblique 8 ° of optical fiber
It is coupled in detector.The major function of PIN-FET detector is the conversion of photosignal and the output of electric signal, it is desirable that
Modulated light source containing sine wave signal.The quality of coupling is directly related to the voltage responsive degree of PIN-FET detector, sensitivity
Etc. performances.So most of companies in order to improve qualification rate, also can carry out PIN-FET detector using different supervision equipments
Coupling.But in the coupling process of different model PIN-FET detector, it is necessary to use a common equipment：Light source.And city
The light source that can be bought on field is the light source for exporting different wave length, does not have Signal averaging function.Even if using letter
Number generator and optical attenuator can not reach required function.
Utility model content
The purpose of this utility model is exactly to provide a kind of for PIN- to overcome the problems of the above-mentioned prior art
The light source drive device of FET coupling, it is ensured that the performances such as PIN-FET detector voltage responsiveness, sensitivity maximize, and optimize.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of light source drive device for PIN-FET coupling, it is internal to have a light source, the light source output end with
The connection of PIN-FET detector, the device includes voltage regulator circuit, sine wave oscillation circuit and amplification driving circuit, described
Circuit output end of pressure-stabilizing is powered to sine wave oscillation circuit and amplification driving circuit, the sine wave oscillation circuit output end with
Sine-wave superimposed to light source is formed optical signal by amplification driving circuit connection, the amplification driving circuit.
The sine wave oscillation circuit is Dendrolimus kikuchii sine wave oscillation circuit.
The light source output end connects light source adjuster.
The light source adjuster is connect by optical fiber with PIN-FET detector.
The light source adjuster is connect by FC interface with optical fiber.
The voltage regulator circuit is direct current regulation circuit, and input terminal connects DC power supply.
Compared with prior art, the utility model has the following advantages that：
(1) contain sine wave oscillation circuit in device, which can generate needed for PIN-FET detector
The sine wave of the specific frequency and fixed amplitude wanted.The coupling that detector is carried out using AC signal, can be shown in oscillograph
Show the real-time couple state of detector, detector coupling is made to reach the voltage responsive degree of requirement.Also PIN-FET detection out can be fed back
The quality of device internal circuit and optical path.
(2) driving light source is carried out using amplification driving circuit, light source can be made to work to stablize optical power, and can be with
The Signal averaging for generating sine-wave oscillator is into optical signal
(3) light source adjuster is used, optical signal can arbitrarily be decayed, reach the optical power of different model request detector
Value.
(4) voltage regulator circuit is used, it is ensured that other circuit stabilities, effective work reduce interference of the noise to circuit.
Detailed description of the invention
Fig. 1 is the light source drive device structural schematic diagram of the present embodiment；
Fig. 2 is the present embodiment light source drive device usage mode schematic diagram in coupling table.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.The present embodiment is with the utility model
Implemented premised on technical solution, the detailed implementation method and specific operation process are given, but the guarantor of the utility model
Shield range is not limited to the following embodiments.
Embodiment
As shown in Figure 1, a kind of light source drive device for PIN-FET coupling, internal to have light source 4, light source 4 is exported
End is connect with PIN-FET detector 8, and device includes voltage regulator circuit 1, sine wave oscillation circuit 2 and amplification driving circuit 3, pressure stabilizing
1 output end of circuit is powered to sine wave oscillation circuit 2 and amplification driving circuit 3, and 2 output end of sine wave oscillation circuit and amplification are driven
Dynamic circuit 3 connects, and sine-wave superimposed to light source 4 is formed optical signal by amplification driving circuit 3.
Sine wave oscillation circuit 2 is Dendrolimus kikuchii sine wave oscillation circuit, because the waveform of any signal can be using just
String wave is superimposed to obtain, so mostly test signal uses sine wave.Contain enlarging section in sine wave oscillation circuit 2
Point, fixed ampllitude link, frequency-selective network, positive feedback network etc..
4 output end of light source is sequentially connected light source adjuster 5, FC interface 6, then passes through optical fiber 7 and PIN-FET detector 8
Connection.
Light source drive device internal sine wave oscillating circuit 2 generates sine wave signal, makes sine by amplification driving circuit 3
Wave signal loading drives light source 4 into the light source 4 of driving.Light signal is finally adjusted by light source adjuster 5, makes to export
Light signal reach different model PIN-FET detector 8 needed for optical power value.
As shown in Figure 1, 2, PIN-FET detector 8 is fixed on coupling table 9 and carries out fiber coupling.Coupling video system 10
To observe fiber position, optical fiber is avoided to damage.Electric energy needed for providing PIN-FET detector 8 as power supply 11.By light source drive device
Electric signal is provided for PIN-FET detector 8.The electric signal exported after coupling is observed by oscillograph 12.
220V normal communication voltage external first, by transformation network 13 and AC/DC switching network 14, by 220V alternating current
Pressure is converted to+12V DC voltage.The voltage carries out pressure stabilizing by voltage regulator circuit 1, while being removed noise, then to sine
Wave oscillating circuit 2 and amplification driving circuit 3 provide electric energy.The fixed ampllitude link of sine wave oscillation circuit 2 limits amplitude as 500mV,
It is 200K Hz that frequency-selecting link, which selectes frequency,.The sine wave of the frequency of generation and amplitude is sent in amplification driving circuit 3.It puts
It is enabled that big driving circuit 3 carries out light source first, then the sine wave source of generation is added in light source 4, forms optical signal；Light
Signal carries out any decaying by light source adjuster 5, to meet the work of PIN-FET detector 8.
Claims (6)
1. a kind of light source drive device for PIN-FET coupling, internal to have light source (4), the light source (4) output end
It is connect with PIN-FET detector (8), which is characterized in that the device includes voltage regulator circuit (1), sine wave oscillation circuit (2)
With amplification driving circuit (3), the voltage regulator circuit (1) output end is to sine wave oscillation circuit (2) and amplification driving circuit (3)
Power supply, the sine wave oscillation circuit (2) output end are connect with amplification driving circuit (3), the amplification driving circuit (3)
By sine-wave superimposed to light source (4), optical signal is formed.
2. a kind of light source drive device for PIN-FET coupling according to claim 1, which is characterized in that described
Sine wave oscillation circuit (2) is Dendrolimus kikuchii sine wave oscillation circuit.
3. a kind of light source drive device for PIN-FET coupling according to claim 1, which is characterized in that described
Light source (4) output end connects light source adjuster (5).
4. a kind of light source drive device for PIN-FET coupling according to claim 3, which is characterized in that described
Light source adjuster (5) is connect by optical fiber (7) with PIN-FET detector (8).
5. a kind of light source drive device for PIN-FET coupling according to claim 4, which is characterized in that described
Light source adjuster (5) is connect by FC interface (6) with optical fiber (7).
6. a kind of light source drive device for PIN-FET coupling according to claim 1, which is characterized in that described
Voltage regulator circuit (1) is direct current regulation circuit, and input terminal connects DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820441882.9U CN208113040U (en) | 2018-03-29 | 2018-03-29 | A kind of light source drive device for PIN-FET coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820441882.9U CN208113040U (en) | 2018-03-29 | 2018-03-29 | A kind of light source drive device for PIN-FET coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208113040U true CN208113040U (en) | 2018-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820441882.9U Active CN208113040U (en) | 2018-03-29 | 2018-03-29 | A kind of light source drive device for PIN-FET coupling |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110324944A (en) * | 2018-03-29 | 2019-10-11 | 上海亨通光电科技有限公司 | A kind of light source drive device for PIN-FET coupling |
-
2018
- 2018-03-29 CN CN201820441882.9U patent/CN208113040U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110324944A (en) * | 2018-03-29 | 2019-10-11 | 上海亨通光电科技有限公司 | A kind of light source drive device for PIN-FET coupling |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200436 No. 555 JIANGCHANG West Road, Jingan District, Shanghai Patentee after: Shanghai Aoshi Control Technology Co., Ltd Address before: 200436 No. 555 JIANGCHANG West Road, Jingan District, Shanghai Patentee before: SHANGHAI HENGTONG PHOTOELECTRIC TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |