DIGITAL INTEGRATING FIBEROPTIC GYROSCOPE WITH ELECTRONIC PHASE TRACKING

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A novel demodulation scheme for interferometers with optical phase modulation is described. The optical phase shift is measured by mixing a train of square digital pulses with a photodetector current and adjusting the pulse spacing by using an electronic closed loop. The optical phase shift is tracked with deviation less than 0.007 rad, which can be easily corrected by using a look-up table. An experimental optically open-loop fiberoptic gyroscope that uses this demodulation shows a linear scale factor in good agreement with theory.
Publisher
OPTICAL SOC AMER
Issue Date
1991-08
Language
English
Article Type
Article
Keywords

LOOP

Citation

OPTICS LETTERS, v.16, no.15, pp.1207 - 1209

ISSN
0146-9592
DOI
10.1364/OL.16.001207
URI
http://hdl.handle.net/10203/19868
Appears in Collection
PH-Journal Papers(저널논문)
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