We report on the fabrication and study of a broad range microcavity in-line Mach-Zehnder Interferometers (BR-μIMZI) operating in the range from 500 nm to 1700 nm. The BR-μIMZI is based on a single-mode fiber in the near-infrared (NIR) range. For wavelengths above the cut-off wavelength λ_c, the interferometric responses are due to the fundamental LP₀₁ mode, while below λ_c – to the second LP₁₁ mode. We derive expressions for the spectral dependencies of the sensitivity to surrounding refractive index (SRI) changes and of the free spectral range (FSR) taking into account the material dispersion of the fiber and the SRI which are confirmed by experimental measurements. The expression for the relation between relative coupled power and visibility have been derived and experimentally measured.

我们报告了在 500 nm 到 1700 nm 范围内工作的宽范围微腔在线马赫-曾德干涉仪 (BR-μIMZI) 的制造和研究。BR-μIMZI 基于近红外 (NIR) 范围内的单模光纤。对于高于截止波长 λ _{c 的}波长，干涉响应是由于基本 LP ₀₁模式，而低于 λ _c – 是由于第二个 LP ₁₁模式。我们推导出对周围折射率 (SRI) 变化和自由光谱范围 (FSR) 的灵敏度的光谱相关性的表达式，同时考虑到由实验测量证实的光纤和 SRI 的材料色散。相对耦合功率和能见度之间关系的表达式已经导出并通过实验测量。