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Air-core photonic-bandgap fiber-optic gyroscope

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3 Author(s)
Hyang Kyun Kim ; Edward L. Ginzton Lab., Stanford Univ., CA ; Digonnet, M.J.F. ; Kino, Gordon S.

We report the demonstration of the first air-core photonic-bandgap fiber gyroscope. Because the optical mode in the sensing coil travels largely through air, which has much smaller Kerr, Faraday, and thermal constants than silica, far lower dependencies on power, magnetic field, and temperature fluctuations are predicted. With a 235-m fiber coil, we observe a minimum detectable rotation rate of ~2.7deg/h and a long-term stability of ~2deg/h, which are consistent with the Rayleigh backscattering coefficient of the fiber and comparable to that measured with a conventional fiber

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Lightwave Technology, Journal of  (Volume:24 ,  Issue: 8 )