A full-parameter simulating software is developed for closed loop fiber optic gyroscopes (FOGs), which is a very powerful tool for designing and optimizing a FOG. It is visual for researchers to investigate the photoelectric signal processing at all stages in FOGs. All optical and electrical components in FOG, including light source, coupler, MIOC, PMF coil, photodetector ADC, DAC and digital circuit, are modeled numerically in the software. The analyses of the amplitude effect on the spectrum of the light source, the modulation and feedback signal and the half-wave voltage adjustment using the software verify the power of the software.
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