15 December 1978 Sensitivity Limits of an Optical-Fiber Gyroscope
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The optimum sensitivity limits of an optical-fiber gyro are assessed with intrinsic light scattering taken into account. Results reveal that laser wavelength of 1.1 µm is more suitable than 0.633 µm, continuous mode stripping can reduce the scattering effect by one hundredfold, and photon-noise-limited performance can be achieved with the adoption of modulation or heterodyne techniques. Numerical examples show that sensitivities of 0.0078 deg/h at 2 mW laser power and 0.0009 deg/h at 81 mW for X=0.633 µm, and 0.0025 deg/h at 2 mW and 0.0007 deg/h at 14.4 mW for X=1.1 pm may be achieved. These values are better than those of the current ring laser gyros and suggest that, with adequate research and development effort, the optical fiber gyroscope canlpeaviable alternative to ring laser gyros as high-performance rotational rate sensors.
© (1978) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shih-Chun Lin, Shih-Chun Lin, } "Sensitivity Limits of an Optical-Fiber Gyroscope", Proc. SPIE 0157, Laser Inertial Rotation Sensors, (15 December 1978); doi: 10.1117/12.965480; https://doi.org/10.1117/12.965480


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