5- https://doi.org/10.1109/icsens.2005.1597775
A Compact Mach-Zehnder Two-Mode Fiber-Optic Interferometer for High Temperature Sensing
- Oct 31, 2005
- Hon Man Chan +2 more
Abstract
A compact high-temperature fiber-optic sensor is demonstrated by fusion splicing a 3.25mm-long two-mode fiber (TMF) between two single mode fibers (SMFs) to form an all-fiber Mach-Zehnder interferometer (MZI). Under optimized splicing conditions, a strong interference is achieved with high extinction ratio (~10dB). Two methods are applied to detect temperature changes from temperature induced wavelength shift and intensity change of a probing light source. Experimental results show the device is capable of monitoring temperature change from 25degC to 425degC with temperature sensitivity of 58pm/degC and 0.45muW/degC with 360muW of input power, respectively, and a theoretical temperature range from 25degC up to 1000degC
- # Temperature Induced Wavelength Shift
- # All-fiber Mach-Zehnder Interferometer
- # Detect Temperature Changes
- # High Extinction Ratio
- # Two-mode Fiber
- # Fusion Splicing
- # Single Mode Fibers
- # Strong Interference
- # Mach-Zehnder Interferometer
- # Temperature Change
