1 February 1991 Holographic coupler for fiber optic Sagnac interferometer
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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.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yunlu Zou, Yunlu Zou, Dahsiung Hsu, Dahsiung Hsu, Ben Wang, Ben Wang, Huiying Tao, Huiying Tao, } "Holographic coupler for fiber optic Sagnac interferometer", Proc. SPIE 1238, Three-Dimensional Holography: Science, Culture, Education, (1 February 1991); doi: 10.1117/12.19358; https://doi.org/10.1117/12.19358

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