CN2599598Y - Integrated earthquake detecting acousto-optic wave guide phase modulation and temp. compensator - Google Patents
Integrated earthquake detecting acousto-optic wave guide phase modulation and temp. compensator Download PDFInfo
- Publication number
- CN2599598Y CN2599598Y CNU032366426U CN03236642U CN2599598Y CN 2599598 Y CN2599598 Y CN 2599598Y CN U032366426 U CNU032366426 U CN U032366426U CN 03236642 U CN03236642 U CN 03236642U CN 2599598 Y CN2599598 Y CN 2599598Y
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- Prior art keywords
- phase modulation
- optical waveguide
- modulation
- temperature compensation
- interdigital transducer
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Abstract
The utility model discloses an integrated earthquake demodulation acoustic-optic waveguide phase modulation and temperature compensation device and belongs to a phase modulation and temperature device in an optoelectronic acceleration seismometer. The device is characterized in that the integrated modulation and compensation device comprises a planar optical waveguide, an interdigital transducer and a control circuit. An input end and an output end of the planar optical waveguide are connected to a single-mode waveguide of a reference arm of an interferometer M-Z respectively. The interdigital transducer is equipped on the planar optical waveguide. When an adder adds a modulation signal with a temperature compensation signal and transmits the signals to the interdigital transducer. Meanwhile, phase modulation and temperature compensation are realized as well. The beneficial result of the invention is that the integrated acoustic-optical waveguide phase modulation and temperature compensation device replaces two devices and control circuits used with the prior art, realizes modulation of an optical carrier wave transmitted in the optical waveguide interferometer and temperature compensation for a system, and is characterized in the simple structure, the low cost and stability and reliability.
Description
Technical field
The utility model relates to a kind of incorporate earthquake detection acoustic waveguide phase modulation (PM) and temperature compensator, belongs to phase modulation (PM) and temperature compensation means in the integrated acceleration detector of photoelectricity.
Background technology
In the integrated acceleration detector of photoelectricity, in order to realize the demodulation of signal, overcome the measuring error that temperature drift brings, must carry out signal modulation and temperature compensation, at present general technology is to adopt two cover devices and control circuit to realize respectively, has brought manufacturing process complexity, shortcoming that cost is high like this.
Summary of the invention
The utility model purpose is to provide a kind of incorporate earthquake detection acoustic waveguide phase modulation (PM) and temperature compensator, and this integrated device has simple in structure, with low cost, reliable and stable characteristics.
The technical scheme that its technical matters that solves the utility model adopts is: on the M-Z of the integrated acceleration detector of photoelectricity interferometer reference arm, make an incorporate acoustic waveguide phase modulation (PM) and temperature compensator.It is characterized in that this incorporate phase modulation (PM) and temperature compensator be made up of planar optical waveguide, interdigital transducer, control circuit, control circuit comprises modulation circuit, temperature-compensation circuit and totalizer.Planar optical waveguide input, output terminal link to each other with the waveguide of M-Z interferometer reference arm single mode bar respectively, interdigital transducer is produced on the planar optical waveguide, totalizer with modulation signal and temperature compensation signal addition after, deliver to interdigital transducer, realize phase modulation (PM) and temperature compensation simultaneously.
Useful result of the present utility model is, this incorporate acoustic waveguide phase modulation (PM) and temperature compensator, replaced prior art to adopt two cover device and control circuits, realized having simple in structure, with low cost, reliable and stable characteristics to the modulation of the light carrier that transmits in the M-Z light guide interference instrument with to the temperature compensation of wave detector system.
Description of drawings
Fig. 1 the utility model structured flowchart
1. planar optical waveguides among the figure, 2. silicon base, 3.SiO
2Cushion, 4. interdigital transducer, 5. control circuit (a is temperature-compensation circuit for modulation circuit b for totalizer c), 6. output single mode bar waveguide, 7. input single mode bar waveguide.
Embodiment
Between the reference arm 6,7 of the M-Z of the integrated acceleration detector of photoelectricity interferometer, make an incorporate acoustic waveguide phase modulation (PM) and temperature compensator.On silicon base 2, make silicon dioxide cushion 3, and between the M-Z light guide interference instrument reference arm of making on the cushion 36,7, make one section planar optical waveguide 1, its input, output terminal link to each other with 6 with the single mode bar waveguide 7 of M-Z interferometer reference arm respectively, interdigital transducer 4 is produced on the planar optical waveguide 1 and links to each other with control circuit 5 on being integrated in silicon base 2, totalizer in the control circuit 5 with modulation signal and temperature compensation signal addition after, deliver to interdigital transducer 4, realize phase modulation (PM) and temperature compensation simultaneously.
Claims (1)
1. an incorporate earthquake detection acoustic waveguide phase modulation (PM) and temperature compensator that is used for the integrated acceleration detector of photoelectricity, be produced on the M-Z interferometer reference arm of the integrated acceleration detector of photoelectricity, it is characterized in that: this incorporate earthquake detection acoustic waveguide phase modulation (PM) and temperature compensator are by planar optical waveguide, interdigital transducer and control circuit are formed, the planar optical waveguide input, output terminal links to each other with the single mode bar waveguide of M-Z interferometer reference arm respectively, interdigital transducer is produced on the planar optical waveguide, totalizer with modulation signal and temperature compensation signal addition after, deliver to interdigital transducer, realize simultaneously to the modulation of the light carrier that transmits in the interferometer with to the temperature compensation of system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032366426U CN2599598Y (en) | 2003-01-28 | 2003-01-28 | Integrated earthquake detecting acousto-optic wave guide phase modulation and temp. compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032366426U CN2599598Y (en) | 2003-01-28 | 2003-01-28 | Integrated earthquake detecting acousto-optic wave guide phase modulation and temp. compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2599598Y true CN2599598Y (en) | 2004-01-14 |
Family
ID=34166889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032366426U Expired - Fee Related CN2599598Y (en) | 2003-01-28 | 2003-01-28 | Integrated earthquake detecting acousto-optic wave guide phase modulation and temp. compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2599598Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788690B (en) * | 2004-08-27 | 2014-07-02 | 普拉德研究及开发股份有限公司 | Method and system for processing seismic exploration information in seismic exploration activities |
| CN107478861A (en) * | 2017-06-27 | 2017-12-15 | 浙江大学 | One kind plays light type photonic crystal waveguide accelerometer |
-
2003
- 2003-01-28 CN CNU032366426U patent/CN2599598Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788690B (en) * | 2004-08-27 | 2014-07-02 | 普拉德研究及开发股份有限公司 | Method and system for processing seismic exploration information in seismic exploration activities |
| CN107478861A (en) * | 2017-06-27 | 2017-12-15 | 浙江大学 | One kind plays light type photonic crystal waveguide accelerometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |