Fiber-optic gyroscope modulation and demodulation method
A technology of modulation and demodulation and fiber optic gyroscope, which is applied to Sagnac effect gyroscopes, measuring devices, instruments, etc., can solve problems such as zero drift and calculation errors of fiber optic gyroscopes, and achieve improved temperature performance and environmental resistance Interference ability, effect of eliminating start-up time problems
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[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0044] See figure 1 and figure 2 , a kind of fiber optic gyro modulation and demodulation method of the present invention, comprises the following steps:
[0045] S101, performing intrinsic square wave modulation on the light wave through the Y waveguide with a modulation amplitude of π / 2+kπ, where k is an integer;
[0046] In this step, the modulation amplitude can be written into the modulation amplitude when writing the program to the fiber optic gyrosco...
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