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Proceedings Paper

Multiplexed extremely short distributed Bragg reflector fiber laser array for large-scale sensing applications
Author(s): Allan C. L. Wong; W. H. Chung; H. Y. Tam; C. Lu
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Paper Abstract

We report the fabrication of extremely short linear-cavity distributed Bragg reflector fiber lasers (DBR-FLs). It has a total length of 7 mm, with the nominal cavity of only 0.4 mm. The FL has a linewidth and polarization beat frequency of 220 Hz and 18.9 MHz, respectively. The relaxation oscillation frequency and its relative peak are 120 kHz and -75dB/Hz, respectively. The FL exhibited low-noise characteristics, with an intensity noise of -107 dB/Hz at 1 MHz. We constructed a FL sensor array that has great potentials for large-scale, high sensitivity sensing applications.

Paper Details

Date Published: 19 January 2011
PDF: 6 pages
Proc. SPIE 7986, Passive Components and Fiber-Based Devices VII, 79860Y (19 January 2011); doi: 10.1117/12.888341
Show Author Affiliations
Allan C. L. Wong, Hong Kong Polytechnic Univ. (Hong Kong, China)
W. H. Chung, Hong Kong Polytechnic Univ. (Hong Kong, China)
H. Y. Tam, Hong Kong Polytechnic Univ. (Hong Kong, China)
C. Lu, Hong Kong Polytechnic Univ. (Hong Kong, China)


Published in SPIE Proceedings Vol. 7986:
Passive Components and Fiber-Based Devices VII
Perry P. Shum, Editor(s)

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