Strain Measurement With Fiber Mach-Zehnder Interferometer Using Spatial Phase Measurement Techniques

摘要

Fiber Mach-Zehnder interferometer (MZI) provides sensing applications with optical fiber for measurements like stress, strain and temperature. Over time MZI has been realised and studied with a beam splitter, mirror and detectors and has been improved using couplers, single mode fiber and detectors as well as inline fiber MZI. In these MZI setup input light is splits into two equal parts which then propagates separately through both reference and measurement fibers. With this set up we demonstrated producing stable detector width compensated fringes suitable for phase measurement due to strain in measuring arm applying spatial phase measurement(SPM) techniques for strain sensor applications.