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Volume 39 Issue 12
Dec.  2013
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Journal of Beijing University of Aeronautics and Astronautics  > 2013  >  39(12): 1670-1675.
Li Yan, Jiang Man, Sun Yanfenget al. Influence of the transmitting spectra of fiber coupler on the SNR of FOGs[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(12): 1670-1675. (in Chinese)
Citation: Li Yan, Jiang Man, Sun Yanfenget al. Influence of the transmitting spectra of fiber coupler on the SNR of FOGs[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(12): 1670-1675. (in Chinese)
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Influence of the transmitting spectra of fiber coupler on the SNR of FOGs

  • School of Instrumentation Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 05 Jan 2013
  • Publish Date: 30 Dec 2013
    Abstract
  • The output spectra of fiber source, which transmitted through a single-mode (SM) fiber coupler, were measured by changing temperature. When the input wave of the fiber optical gyroscope (FOG) from the fiber coupler were transmitting wave and coupling wave, respectively, the temperature characteristics of signal-to-noise ratios (SNR) of FOG were simulated. The above experimental results demonstrate that the output power, mean-wavelength and spectral width of the spectra traveling through the arm of directly-transmission and that of the coupling of coupler will change when the temperature changes, and the temperature-stability of output power, mean-wavelength and spectral width of the directly-transmission arm is higher than that of the coupling arm. And the simulated results demonstrate that the errors of FOG's caused by the light wave outputting from the coupling arm of SM fiber coupler are almost 4 times of that from the directly-transmission arm.

     

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    • References(10)
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