Side-coupled optical fiber devices for sensing applications

Yinan Zhang; Xinwei Lan; Tao Wei; Hongbiao Duan; Hai Xiao

doi:10.1117/12.850658

28 April 2010 Side-coupled optical fiber devices for sensing applications

Yinan Zhang, Xinwei Lan, Tao Wei, Hongbiao Duan, Hai Xiao

Proceedings Volume 7682, Photonic Microdevices/Microstructures for Sensing II; 76820K (2010) https://doi.org/10.1117/12.850658
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

We demonstrate experimentally the light coupling between two types of optical fiber devices, including the long period fiber gratings (LPFGs) and fiber tapers. Optical power transfer is achieved through evanescent field coupling between the cladding modes. The output spectra from the LPFG couplers exhibit band-pass/band-rejection pattern, which could be used as add/drop filters. The output spectra from the fiber taper couplers show an interference pattern similar to a Mach-Zehnder interferometer. By fixing the fiber devices in a capillary glass tube, we demonstrated a miniaturized coupler for displacement sensing.

Citation Download Citation

Yinan Zhang, Xinwei Lan, Tao Wei, Hongbiao Duan, and Hai Xiao "Side-coupled optical fiber devices for sensing applications", Proc. SPIE 7682, Photonic Microdevices/Microstructures for Sensing II, 76820K (28 April 2010); https://doi.org/10.1117/12.850658

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