17 October 2012 Experimental investigation of dynamic characteristics of wavelength of DFB-LD for FBG-FPI vibration sensor based on wavelength-to-time mapping
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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842151 (2012); doi: 10.1117/12.975152
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
Abstract
An in-fiber Fabry-Perot interferometer with fiber Bragg grating mirrors (FBG-FPI) yields extremely narrow transmission peaks within the FBG reflection wavelength range. Periodical scanning of the laser light source is under influence of strain. A high signal-to-noise ratio interrogation is possible with high resolution and a wide range of vibration frequency can be analyzed since the laser wavelength can be easily scanned at high frequency. Furthermore, an inexpensive DFB laser can be utilized as a light source because the narrowness of the transmission peaks does not require broad wavelength scanning. In this paper, experimental investigation of dynamic characteristics of wavelength of DFB-LD is reported.
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Atsushi Wada, Keisuke Ikuma, Satoshi Tanaka, Nobuaki Takahashi, "Experimental investigation of dynamic characteristics of wavelength of DFB-LD for FBG-FPI vibration sensor based on wavelength-to-time mapping", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842151 (17 October 2012); doi: 10.1117/12.975152; https://doi.org/10.1117/12.975152
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KEYWORDS
Fiber Bragg gratings

Sensors

Light sources

Modulation

Reflectivity

Cladding

Current controlled current source

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