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Proceedings Paper

Reduction of light-source-induced scale-factor nonlinearities in low-cost fiber optic gyroscope
Author(s): Wolfgang Ecke; Klaus Hilpert; Andreas Holz; Rudolf Mueller; Michael Neukirch; Reinhardt Willsch
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Paper Abstract

Laser diodes in sub-threshold regime are used as low- coherent broadband light sources in low-cost interferometric fiber-optic gyroscopes with better than 2 degrees/h bias repeatability over -30 degrees...+70 degrees C temperature range. The optical reflectivity of the laser diode causes nonlinear contributions to the interferometer output signal. Corresponding to theoretical calculations, the scale factor error varies in dependence on the actual rotation rate. This error for the present has been reduced to about 30 percent applying an active compensation of the light reflected in the laser diode.

Paper Details

Date Published: 12 November 1996
PDF: 10 pages
Proc. SPIE 2837, Fiber Optic Gyros: 20th Anniversary Conference, (12 November 1996); doi: 10.1117/12.258185
Show Author Affiliations
Wolfgang Ecke, Institut fuer Physikalische Hochtechnologie eV (Germany)
Klaus Hilpert, Institut fuer Physikalische Hochtechnologie eV (Germany)
Andreas Holz, Institut fuer Physikalische Hochtechnologie eV (Germany)
Rudolf Mueller, Institut fuer Physikalische Hochtechnologie eV (Germany)
Michael Neukirch, Institut fuer Physikalische Hochtechnologie eV (Germany)
Reinhardt Willsch, Institut fuer Physikalische Hochtechnologie eV (Germany)


Published in SPIE Proceedings Vol. 2837:
Fiber Optic Gyros: 20th Anniversary Conference
Eric Udd; Herve C. Lefevre; Kazuo Hotate, Editor(s)

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