High-birefringence fiber loop mirror sensor using a WDM fused fiber coupler | Zendy

D. J. Passos | Zendy; Manuel B. Marques | Zendy; Orlando Frazão | Zendy

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High-birefringence fiber loop mirror sensor using a WDM fused fiber coupler

Author(s) -

D. J. Passos,

Manuel B. Marques,

Orlando Frazão

Publication year - 2013

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.38.002927

Subject(s) - optics , wavelength division multiplexing , dispersion shifted fiber , fiber optic sensor , polarization maintaining optical fiber , materials science , graded index fiber , plastic optical fiber , optical fiber , birefringence , wavelength , signal (programming language) , optoelectronics , physics , computer science , programming language

An intensity-based highly birefringent (Hi-Bi) fiber loop mirror (FLM) sensor is proposed which uses a wavelength-division multiplexing (WDM) fiber coupler. The effect of integrating the WDM coupler in a FLM configuration is first studied. A section of Hi-Bi (bow-tie) fiber of length 0.26 m is then placed in the fiber loop, making the spectral response of the device simultaneously dependent on the Hi-Bi fiber section and WDM coupler characteristics. When strain is applied to the sensing head, the spectral signal is modulated in amplitude, in contrast with the conventional Hi-Bi FLM sensors in which there are wavelength shifts. The sensor was characterized in strain and a sensitivity of (-2.2±0.4)×10(-3) με(-1) for a range of 300 με was attained. The self-referenced character of the sensor is noted.

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