Fiber-Optic Inclinometer Based on Taper Michelson Interferometer

Refractive index sensor based on an abrupt taper Michelson interferometer in a single-mode fiber.

A simple refractive index sensor based on a Michelson interferometer in a single-mode fiber is constructed and demonstrated. The sensor consists of a single symmetrically abrupt taper region in a short piece of single-mode fiber that is terminated by approximately 500 nm thick gold coating. The sensitivity of the new sensor is similar to that of a long-period-grating-type sensor, and its ease o...

Fiber-optic Michelson interferometer with high sensitivity based on a liquid-filled photonic crystal fiber

This study proposes an ultracompact and highly sensitive liquid-filled photonic crystal fiber Michelson interferometer (LF-PCFMI) based on material dispersion engineering. Numerical simulations and experimental measurements are performed in the work, and both of their results show that the temperature sensitivity can be more greatly improved than those of conventional photonic crystal fiber int...

Fiber Optic and Free Space Michelson Interferometer — Principle and Practice

Highly Sensitive Fiber Michelson Interferometer Based on a Liquid-Filled Photonic Crystal Fiber with Dispersion Engineering

Photonic crystal fiber interferometers (PCFIs) with superiority of the unique fiber structure have been extensively developed as the all-fiber based strain () [1], external refractive index (RI) [2], chemical [3] and bending sensors [4]. The majority of the valuable applications on the fiber-optic sensing are all accredited to the air voids structured periodically in the photonic crystal fibe...

Miniaturized fiber-optic Michelson-type interferometric sensors.

We present a novel, miniaturized Michelson-type fiber-optic interferometric sensor that is relatively insensitive to temperature drifts. A fused-biconical tapered coupler is cleaved immediately after the coupled length and polished down to the region of the fused cladding, but short of the interaction region. The end of one core is selectively coated with a reflective surface and is used as the...