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首页> 外文期刊>Applied optics >PERFORMANCE ANALYSES OF AN INFRARED SINGLE-MODE ALL-FIBER-OPTIC FOURIER-TRANSFORM SPECTROMETER
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PERFORMANCE ANALYSES OF AN INFRARED SINGLE-MODE ALL-FIBER-OPTIC FOURIER-TRANSFORM SPECTROMETER

机译：红外单模全光纤傅里叶变换光谱仪的性能分析

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Stretching one of a pair of fiber arms can be done to realize optical phase modulation for an IR single-mode all-fiber-optic Fourier-transform spectrometer (FTS), But this operation will inevitably limit the physical performance of a FTS. We study these limits theoretically and experimentally. The optical path difference (OPD) will be dispersive. At the first-order approximation, this OPD dispersion will result in a shift in the recovered spectra. The spectral resolution and the sampling distance will also be dispersive. Linear birefringence introduced when a curved fiber is stretched will affect the final spectra. This effect can be eliminated by real-time compensation and (or) by system design. Errors encountered uniquely in the all-fiber-optic FTS in the optical phase domain, such as the fiber-parameter errors, nonlinearity of the piezoelectric cylinder, and their effects on the spectra are analyzed, from which we deduce the requirements for calibration. Finally, calibration methods for optical phase modulation are discussed. [References: 22]
机译：可以拉伸一对光纤臂中的一个来实现IR单模全光纤傅里叶变换光谱仪（FTS）的光学相位调制，但是这种操作不可避免地会限制FTS的物理性能。我们在理论上和实验上研究这些限制。光程差（OPD）将是分散的。在一阶近似下，此OPD色散将导致恢复的光谱发生偏移。光谱分辨率和采样距离也将是分散的。拉伸弯曲光纤时引入的线性双折射将影响最终光谱。可以通过实时补偿和（或）通过系统设计消除这种影响。分析了在光相位域中全光纤FTS中唯一遇到的误差，例如光纤参数误差，压电圆柱体的非线性以及它们对光谱的影响，从中得出对校准的要求。最后，讨论了光相位调制的校准方法。 [参考：22]

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