Enhanced fiber Bragg grating sensor demodulation technique using cascade wavelength division multiplex couplers
| Data(s) |
2005
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| Resumo |
An enhanced technique for interrogating fiber Bragg grating wavelength shift using cascade wavelength division multiplexer (WDM) couplers was proposed and demonstrated. Three WDM couplers which show a linear filter function over the expected wavelength range are employed and cascaded to track Bragg wavelength shifts. Compared with single WDM demodulator. sharper spectral slope is obtained and considerable linear filter range is kept. The static and dynamic strain sensor demodulation experiments demonstrated that the simple passive technique improves the sensitivity approximately two times and keeps 5nm linear demodulation range based on our devices. The cascade WDM coupler demodulation system has high scan rate which can be used to monitor fast vibration. An enhanced technique for interrogating fiber Bragg grating wavelength shift using cascade wavelength division multiplexer (WDM) couplers was proposed and demonstrated. Three WDM couplers which show a linear filter function over the expected wavelength range are employed and cascaded to track Bragg wavelength shifts. Compared with single WDM demodulator. sharper spectral slope is obtained and considerable linear filter range is kept. The static and dynamic strain sensor demodulation experiments demonstrated that the simple passive technique improves the sensitivity approximately two times and keeps 5nm linear demodulation range based on our devices. The cascade WDM coupler demodulation system has high scan rate which can be used to monitor fast vibration. zhangdi于2010-03-29批量导入 Made available in DSpace on 2010-03-29T06:06:31Z (GMT). No. of bitstreams: 1 2423.pdf: 866599 bytes, checksum: c5d55bab2f388b86df88adff3b80ab6b (MD5) Previous issue date: 2005 SPIE.; Chinese Opt Soc. Chinese Acad Sci, Inst Semicond, Res & Dev Ctr Optoelect, Beijing 100083, Peoples R China SPIE.; Chinese Opt Soc. |
| Identificador | |
| Idioma(s) |
英语 |
| Publicador |
SPIE-INT SOC OPTICAL ENGINEERING 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA |
| Fonte |
Tian, KK; Zhang, SW; Li, F; Liu, YL; Wang, QM .Enhanced fiber Bragg grating sensor demodulation technique using cascade wavelength division multiplex couplers .见：SPIE-INT SOC OPTICAL ENGINEERING .OPTOELECTRONIC DEVICES AND INTEGRATION丛书标题: PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) ,1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA ,2005,PTS 1 AND 2 5644: 784-791 Part 1-2 |
| Palavras-Chave | #光电子学 #fiber Bragg grating(FBG) #wavelength division multiplexer (WDM) #demodulation #STRAIN-SENSOR #SYSTEMS #FILTER |
| Tipo |
会议论文 |
