A Large Area Fiber Optic Gyroscope on multiplexed fiber network

Abstract

We describe a fiber optical gyroscope based on the Sagnac effect realized on a multiplexed telecom fiber network. Our loop encloses an area of 20 km^2 and coexists with Internet data traffic. This Sagnac interferometer achieves a sensitivity of about 1e-8 (rad/s)/sqrt(Hz), thus approaching ring laser gyroscopes without using narrow-linewidth laser nor sophisticated optics. The proposed gyroscope is sensitive enough for seismic applications, opening new possibilities for this kind of optical fiber sensors

References in corpus (3)

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• Tackling the Limits of Optical Fiber Links
• The unit of time: present and future directions
• A large scale passive laser gyroscope for Earth rotation sensing
• Beyond the fundamental noise limit in coherent optical fiber links
• Phase Noise in Real-World Twin-Field Quantum Key Distribution