Highly sensitive fiber-optic refractometer with an over-offset tilted fiber Bragg grating configuration is proposed based on strong cladding-core recoupling. Reflection with two well-defined bands performs an improved refractive index measurement combining with power self-calibration property.

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Conference Conference on Lasers and Electro-Optics, CLEO 2009
Citation
Guo, T, Tam, H.-Y. (Hwa-Yaw), & Albert, J. (2009). Optical fiber refractometer with improved sensitivity based on an offset tilted fiber bragg grating. Presented at the Conference on Lasers and Electro-Optics, CLEO 2009.