193nm excimer laser inscribed Bragg gratings in microfibers for refractive index sensing | Zendy

Yang Ran | Zendy; Yannan Tan | Zendy; LiPeng Sun | Zendy; Shuai Gao | Zendy; Jie Li | Zendy; Long Jin | Zendy; BaiOu Guan | Zendy

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193nm excimer laser inscribed Bragg gratings in microfibers for refractive index sensing

Author(s) -

Yang Ran,

Yannan Tan,

LiPeng Sun,

Shuai Gao,

Jie Li,

Long Jin,

BaiOu Guan

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.018577

Subject(s) - optics , materials science , fiber bragg grating , microfiber , phosfos , refractive index , long period fiber grating , graded index fiber , excimer laser , fiber laser , laser , normalized frequency (unit) , photonic crystal fiber , optical fiber , fiber optic sensor , wavelength , optoelectronics , physics , phase locked loop , frequency synthesizer , phase noise , composite material

We demonstrate the inscription of fiber Bragg gratings by 193 nm ArF excimer laser in microfibers drawn from the standard single mode telecommunication fiber. Fiber Bragg gratings are directly inscribed in a series of microfibers with diameter ranged from tens of μm to 3.3 μm without hydrogen loading or other treatment to photosensitize the microfibers. Four reflection peaks are observed where three correspond to high order mode resonances. The resonance wavelength depends on the fiber diameter and it sharply blueshifts as the diameter is decreased below 10 μm. The gratings are characterized for their response to ambient refractive index. The higher order mode resonance exhibits higher sensitivity to refractive index.

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