Sensing and Demodulation of Special Long-Period Fiber Gratings Induced by ScanningCO2Laser Pulses | Zendy

Tao Zhu | Zendy; Leilei Shi | Zendy; Min Liu | Zendy; Wei Huang | Zendy

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Sensing and Demodulation of Special Long-Period Fiber Gratings Induced by ScanningCO2Laser Pulses

Author(s) -

Tao Zhu,

Leilei Shi,

Min Liu,

Wei Huang

Publication year - 2012

Publication title -

journal of sensors

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.399

H-Index - 43

eISSN - 1687-7268

pISSN - 1687-725X

DOI - 10.1155/2012/539095

Subject(s) - refractive index , wavelength , materials science , demodulation , optical fiber , optics , fiber bragg grating , laser , fabrication , optoelectronics , computer science , physics , telecommunications , medicine , channel (broadcasting) , alternative medicine , pathology

A review of long-period fiber gratings (LPFGs) with special structures induced by scanning CO2 laser pulses in single mode fiber (SMF) is presented in this paper. In the first part, the special structures and fabrication methods of LPFGs are demonstrated in detail. Next, the special LPFG-based sensors are demonstrated, such as refractive index sensor, strain sensor with temperature compensation, and torsion sensor without temperature crosstalking. Finally, several investigation methods including intensity, wavelength shift, and fiber ring laser demodulation are discussed

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