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DIFFERENTIATING OPTICAL-FIBER MACH-ZEHNDER INTERFEROMETER

机译:区分光纤马赫-曾德尔干涉仪

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We introduce a new type of optical-fiber Mach-Zehnder interferometer whose output depends on phase differentials or the time rate of change of the unknown phase-modulating signal. Whereas the actual phase excursion introduced by the signal could cause interference over several fringes in a conventional Mach-Zehnder interferometer, the differential phase shifts may be restricted to the linear range of the phase detector. Being of simple construction, the interferometer can be operated without active biasing, additional phase modulation, or complex signal-processing techniques. We analyze a prototype architecture to explain the principle of operation of the system and to derive design formulas. This is followed by experimental evaluation of a more practical configuration. [References: 6]
机译:我们介绍一种新型的光纤马赫曾德尔干涉仪,其输出取决于相位差或未知相位调制信号的时间变化率。在传统的Mach-Zehnder干涉仪中,信号引入的实际相位偏移可能会在几个条纹上产生干扰,而差分相移可能会限制在相位检测器的线性范围内。干涉仪结构简单,无需有源偏置,附加相位调制或复杂的信号处理技术即可操作。我们分析了原型架构,以解释系统的工作原理并得出设计公式。接下来是对更实际配置的实验评估。 [参考:6]

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