Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/82084
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Department of Electrical Engineering | - |
| dc.creator | Jin, W | en_US |
| dc.creator | Ma, J | en_US |
| dc.date.accessioned | 2020-05-05T05:58:35Z | - |
| dc.date.available | 2020-05-05T05:58:35Z | - |
| dc.identifier.uri | http://hdl.handle.net/10397/82084 | - |
| dc.language.iso | zh | en_US |
| dc.publisher | 中华人民共和国国家知识产权局 | en_US |
| dc.rights | 专利权人: 香港理工大学深圳研究院 | en_US |
| dc.title | Phase demodulator, optical fiber sound pressure demodulation system, demodulation method and manufacturing method | en_US |
| dc.type | Patent | en_US |
| dc.description.otherinformation | Inventor name used in this publication: 靳伟 | en_US |
| dc.description.otherinformation | Inventor name used in this publication: 马军 | en_US |
| dc.description.otherinformation | Title in Traditional Chinese: 相位解調器、光纖聲壓解調系統、解調方法及製造方法 | en_US |
| dcterms.abstract | The invention, which is suitable for the technical field of the sound pressure measurement device, provides a phase demodulator, an optical fiber sound pressure demodulation system, a demodulation method and a manufacturing method. The phase demodulator employing a Sagnac fiber loop structure comprises a broadband light source, a photoelectric detector, a signal analysis module connected with the photoelectric detector, a first optical fiber coupler connected with the broadband light source and the photoelectric detector, a tunable optical attenuator, a fiber delay line connected with the first optical fiber coupler, a second optical fiber coupler, an optical frequency shifter, and a fiber depolarization device. The tunable optical attenuator connected with the first optical fiber coupler is used for adjusting the intensity of CW light or adjusting the intensity of CCW light; the second optical fiber coupler connected with the fiber delay line and the tunable optical attenuator is used for realizing coupling of light reflected by a membrane type optical fiber sound pressure sensor; the optical frequency shifter connected with the second optical fiber coupler provides stable pi/2 quadrature phase biasing; and the fiber depolarization device connected with the optical frequency shifter is connected with the membrane type optical fiber sound pressure sensor externally by a fiber. According to the invention, stable phase demodulation of the membrane type optical fiber sound pressure sensor is realized. | - |
| dcterms.abstract | 本发明适用于声压测量装置技术领域，提供了一种相位解调器、光纤声压解调系统、解调方法及制造方法，该相位解调器，采用Sagnac光纤环的结构，包括宽带光源，光电探测器，连接光电探测器的信号分析模块，还包括：分别连接宽带光源以及光电探测器的第一光纤耦合器；连接第一光纤耦合器，调节CW光的强度，或者调节CCW光的强度的可调谐光衰减器；连接第一光纤耦合器的光纤延时线；分别连接光纤延时线以及可调谐光衰减器，耦合膜片式光纤声压传感器反射的光的第二光纤耦合器；连接第二光纤耦合器，提供稳定的π/2正交相位偏置的光移频器；连接光移频器，且通过光纤外接膜片式光纤声压传感器的光纤去偏振器。本发明实现了膜片式光纤声压传感器的稳定相位解调。 | - |
| dcterms.alternative | 相位解调器、光纤声压解调系统、解调方法及制造方法 | en_US |
| dcterms.bibliographicCitation | 中国专利 ZL 201510193456.9 | en_US |
| dcterms.issued | 2019-01-15 | - |
| dc.description.country | China | - |
| dc.identifier.rosgroupid | 2018002648 | - |
| dc.description.ros | 2018-2019 > Other Outputs > Patents granted | - |
| dc.description.validate | 202006 bcrc | - |
| dc.description.oa | Version of Record | en_US |
| Appears in Collections: | Patent | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ZL201510193456.9.pdf | 931.27 kB | Adobe PDF | View/Open |
Page views
10
Citations as of Jun 26, 2022
Downloads
3
Citations as of Jun 26, 2022
Google ScholarTM
Check
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.