Transmitting spectra-temperature characteristic of single-mode fiber coupler]

Citation

Li Yan, Zhang Min, Li Lijing, & Yang Dewei. (2012). 单模光纤耦合器的传输光谱温度特性 [Transmitting spectra-temperature characteristic of single-mode fiber coupler]. 北京航空航天大学学报 (Journal of Beijing University of Aeronautics and Astronautics), 38(6), 819–822.

Keywords

  • Fiber coupler
  • Single-mode fiber coupler
  • Spectrum (光谱)
  • Temperature characteristic (温度特性)
  • Stability (稳定性)
  • Transmitting wave (透射光波)
  • Coupling wave (耦合光波)
  • Mean-wavelength (平均波长)
  • Output power (输出功率)
  • Sagnac interferometer
  • Fiber-optic gyroscope (光纤陀螺)
  • Interferometer error (干涉仪输出误差)
  • Wavelength (波长)
  • Coupling coefficient (耦合系数)
  • Splitting ratio (分光比)
  • Thermal expansion (热膨胀)
  • Thermo-optic effect (热光效应)
  • Lyot depolarizer (Lyot 消偏器)
  • Spectrometer (光谱仪)

Brief

The article demonstrates that the transmitted light wave from a single-mode fiber coupler exhibits significantly higher temperature stability in terms of average wavelength and power compared to the coupled light wave, which results in smaller errors in Sagnac interferometers when the transmitted wave is used as the input.

Summary

This article demonstrates that the transmitted light from a single-mode fiber coupler exhibits greater stability in its spectrum (average wavelength and power) under temperature changes compared to the coupled light. Consequently, using the transmitted light wave as the input to a Sagnac interferometer results in significantly smaller temperature-induced errors than using the coupled light wave. The authors suggest using the direct transmission arm of the coupler in fiber-optic gyros to minimize temperature-related inaccuracies.

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