一种宽带光纤非线性干涉仪
A broadband fiber-optic nonlinear interferometer
摘要：
介绍了一种基于高非线性光纤四波混频的全光纤非线性干涉仪。我们的配置实现了相位敏感干涉，在554 GHz的宽光学波段上具有97%的峰值可见度和>90%的可见度。通过比较输出噪声功率的散粒噪声水平，我们确认在暗干涉条纹的噪声消除，所需的量子增强的灵敏度。该装置将非线性干涉测量技术扩展到高非线性光纤的重要平台，可以应用于各种光纤传感器。
英文摘要：
We describe an all-fiber nonlinear interferometer based on four-wave mixing in highly nonlinear fiber. Our configuration realizes phase-sensitive interference with 97% peak visibility and >90% visibility over a broad 554 GHz optical band. By comparing the output noise power to the shot-noise level, we confirm noise cancellation at dark interference fringes, as required for quantum-enhanced sensitivity. Our device extends nonlinear interferometry to the important platform of highly nonlinear optical fiber, and could find application in a variety of fiber-based sensors.
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