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Interferometric Raman spectrometry with fiber waveguides

机译：光纤波导干涉拉曼光谱

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摘要

We present the design and expected performance of a Fourier-transform fiber-optic Raman spectrometer that should be capable of rapidly diagnosing environmental contamination to levels approaching a few parts per thousand. The system design is predicated on fiber arms that are unequal in length initially. A voltage applied to the piezoceramic substrate hosting the shorter fiber strains it through zero path difference to a new length that exceeds the reference arm by its initial length deficiency. This approach permits one to resolve spectral features separated by 0.5 cm↑(-1) over an electromagnetic bandwidth that exceeds 2000 cm↑(-1) without using a moving mirror or introducing a second laser to provide the sampling reference. Specific expressions are given for computing the spectral resolution, modulation bandwidth, and modulated signal-to-noise ratio of the device as a function of the system's design parameters. # 1997 Optical Society of America
机译：我们介绍了傅里叶变换光纤拉曼光谱仪的设计和预期性能，该光谱仪应能够快速诊断环境污染，达到接近千分之几的水平。系统设计基于最初长度不等的光纤臂。施加到承载较短纤维的压电陶瓷基板的电压会通过零路径差将其应变至新长度，该新长度超出了参考臂的初始长度不足。这种方法允许人们在超过2000 cm↑（-1）的电磁带宽上解决由0.5 cm↑（-1）分开的光谱特征，而无需使用移动镜或引入第二激光来提供采样参考。给出了用于根据系统设计参数计算设备的光谱分辨率，调制带宽和调制信噪比的特定表达式。 ＃1997美国眼镜学会

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