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1 July 2015 Feature regulation and applications of M-FBG by laser ablation
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Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 965509 (2015)
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of
Fabricating microstructures into the cladding of fiber Bragg grating, the FBG sensors will have wider applications in magnetic field measurement or gas sensing. In present paper, we regulate the physical feature of FBG by ablating single or cross spiral micro-trench with femtosecond laser. The influences of different processing parameters on M-FBG (microstructured FBG) have been investigated. The waveform variations and its controlling method have been discussed. It is shown that, the central wavelength shift enlarged with increasing of the laser energy, or decreasing of scanning speed. Finally, a cross spiral type M-FBG magnetic field probe and a temperature probe are also demonstrated.
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Xian Zhou, Yutang Dai, Bin Liu, Joseph Muna Karanja, Xiaoyan Wen, and Jun Huang "Feature regulation and applications of M-FBG by laser ablation", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 965509 (1 July 2015);

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