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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