Holographic coupler for fiber optic Sagnac interferometer

Yunlu Zou; Dahsiung Hsu; Ben Wang; Huiying Tao

doi:10.1117/12.19358

1 February 1991 Holographic coupler for fiber optic Sagnac interferometer

Yunlu Zou, Dahsiung Hsu, Ben Wang, Huiying Tao

Proceedings Volume 1238, Three-Dimensional Holography: Science, Culture, Education; (1991) https://doi.org/10.1117/12.19358
Event: International Seminar on 3D Holography, 1989, Kiev, Ukraine

Abstract

The feasibility of using a holographic lens as a coupler in a fiber-optic gyro that is conceived as a ring Sagnac interferometer is experimentally assessed, and the equivalent Bragg condition for holographic gratings is discussed together with the Q factor for slanted gratings. The present holographic couplers yield superior splitting ratio and polarization nonsensitivity; they are also easily constructed and low-cost. The recording medium used is dichromated gelatin, which possesses high diffraction efficiency and low noise.

Citation Download Citation

Yunlu Zou, Dahsiung Hsu, Ben Wang, and Huiying Tao "Holographic coupler for fiber optic Sagnac interferometer", Proc. SPIE 1238, Three-Dimensional Holography: Science, Culture, Education, (1 February 1991); https://doi.org/10.1117/12.19358

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