Process for the compensation of changes of the light source...

Details Process for the compensation of changes of the light source... Process for the compensation of changes of the light source...

G - Physics

01

C

G01C 19/72 (2006.01)

Patent

CA 2112608

In the process, according to the invention, for the compensation of changes of the wavelength of the light source of a fibre-optic gyro having a closed reset control loop, use is made of the finding that the voltage range which is required for a phase shift of 2.pi. in a phase modulator (4) is dependent upon the light source wavelength. Since the voltage required for the 2.pi. phase shift is regulated, according to the invention the voltage value which is thus available can be utilized for the compensation of a change of the light source wavelength or of the scale factor. Moreover, in order to achieve a precise compensation it is necessary to take into consideration the temperature of the phase modulator (4).

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