High Order Resonances in Turning Point Long Period Fiber Grating Fabricated by a Femtosecond Laser

Fangcheng Shen,Haiming Jiang,Hongyan Xia,Kang Xie,Xuewen Shu

2021 IEEE 6th Optoelectronics Global Conference (OGC)（2021）

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摘要

Long period fiber grating (LPFG) around the dispersion turning point (DTP) is fabricated with femtosecond laser direct writing. The fabricated grating exhibits dual resonances in its transmission spectrum, which are typical in DTP-LPFG. Resonant peaks generated from high order (3rd) diffraction can be observed when the grating is immersed in aqueous glycerol solution. The resonant wavelengths of e...

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关键词

Optical fibers,Optical fiber sensors,Writing,Fiber gratings,Turning,Sensors,Ultrafast optics

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