Title: Optical fiber gyro front-set amplification and modification output circuit with signal differential amplification
Application Number: 200610113543 Application Date: 2006.09.30
Publication Number: 1936502 Publication Date: 2007.03.28
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01C19/72
Applicant(s) Name: Beijing Aeronautic Address:
Inventor(s) Name:
Attorney & Agent: zhouchang qi
Abstract:
    This invention discloses a fiber peg-top pre-amplification and modulation output circuit with signal differential amplification, in which, said pre-amplification circuit receives light strength voltage information output by a photoelectric detector and amplifies and filters it to be output to a digital signal processor composed of a differential amplifier, an operation amplifier and a 12-bit parallel AD converter, said modulation output circuit receives digital modulation information output by the digital signal processor to be amplified and output to a waveguide modulator composed of a 16-bit parallel DA converter, 10-bit serial DA converter, a primary voltage source, a differential amplifier and an operational amplifier. The voltage sphere of a ladder wave output by a modulation output circuit is 0V- -4V and is designed in terms of specific double-differential current and voltage conversion circuit.
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