Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/20593
Title: Composite structure distributed Bragg reflector fiber laser for simultaneous two-parameter sensing
Authors: Wong, ACL
Chung, WH
Lu, C 
Tam, HY 
Keywords: Composite structure distributed Bragg reflector fiber laser (DBR-FL)
Fiber laser sensor
Refractive index (RI)
Simultaneous two-parameter sensing
Temperature
Issue Date: 2010
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE photonics technology letters, 2010, v. 22, no. 19, 5535123, p. 1464-1466 How to cite?
Journal: IEEE photonics technology letters 
Abstract: We propose and demonstrate using a single composite structure distributed Bragg reflector fiber laser (DBR-FL) for simultaneous sensing of refractive index (RI) and temperature. The FL structure consists of a pair of uniform fiber Bragg gratings (FBGs) forming the laser cavity. A variable cavity attenuator made by a blazed FBG (BFBG) is written inside the cavity, which varies the optical loss upon changes in the surrounding RI. Simultaneous sensing is realized from the fact that the output power only varies with the surrounding RI, whereas the lasing wavelength with the temperature. The sensitivity of RI measurement of the proposed FL improved by several times in comparison with the passive BFBG sensor.
URI: http://hdl.handle.net/10397/20593
ISSN: 1041-1135
EISSN: 1941-0174
DOI: 10.1109/LPT.2010.2062500
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