Abstract:We demonstrate an ultracompact and robust micro Sagnac loop interferometer by splicing the end-sphered hollow-core fiber against single mode fiber. The device length is less than 450Pm and the extinction ratio can be above 29dB.
INTRODUCTIONSagnac loop interferometer (SLI) has been extensively used in gyroscopes, sensors, filters, and fiber lasers [1][2][3]. In contrast to the linear-optical-path interferometers like Mach-Zehnder, Michelson, and Fabry Perot, the Sagnac interferometer is based on a loop mirror … Show more
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