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http://hdl.handle.net/10397/5656
| Title: | Single tilted Bragg reflector fiber laser for simultaneous sensing of refractive index and temperature | Authors: | Wong, ACL Chung, W Tam, HY Lu, C |
Issue Date: | 17-Jan-2011 | Source: | Optics express, 17 Jan. 2011, v. 19, no. 2, p. 409-414 | Abstract: | A type of fiber laser, called tilted Bragg reflector fiber laser (TBR-FL), is proposed and its application in simultaneous sensing of surrounding refractive index (SRI) and temperature is demonstrated. This FL is formed by a pair of wavelength and tilt-angle matched tilted fiber Bragg gratings (TFBGs) that acted both as a resonant cavity and sensing element. A unique spectral feature of the TBR-FL is the presence of grating tilt-induced cladding modes spectrum that does not appear in other type of FL, which provides an extra sensing mechanism. By employing a simple experimental setup with the discrete wavelet transform as the demodulation technique, simultaneously sensing of SRI and temperature are achieved by measuring and analyzing the wavelet coefficients shifts of the laser output and averaged cladding modes. | Keywords: | Bragg reflectors Discrete wavelet transforms Fiber lasers Fibers Light refraction Reflection Refractive index Refractometers |
Publisher: | Optical Society of America | Journal: | Optics express | EISSN: | 1094-4087 | DOI: | 10.1364/OE.19.000409 | Rights: | © 2011 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?URI=oe-19-2-409. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. |
| Appears in Collections: | Journal/Magazine Article |
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|---|---|---|---|---|
| Wong_Single_Tilted_Bragg.pdf | 936.67 kB | Adobe PDF | View/Open |
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