Highly Sensitive and Widely Dynamic Fiber-Coiled Deformation Sensor Immune from External Disturbances |
| |
Authors: | Satoshi Tanaka Yoshihiro Ohtsuka |
| |
Institution: | (1) Department of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo 060, Japan |
| |
Abstract: | This paper describes a double fiber-coiled interferometric deformation sensor fabricated using paired polarization maintaining single-mode fibers. A change in bending-induced birefringence plays a fundamental role in the sensor performance as the fiber-coil is being deformed across its cross-section. Differential optical heterodyne detection processes allow us to implement two-mode operations; one is widely dynamic operation and the other highly sensitive operation around a target region. The deformation sensitivity for one-turn fiber-coil is 2.5 deg/mm for the widely dynamic operation, whereas 9.5X10 deg/mm for the highly sensitive operation. The double fiber-coiled deformation sensor can eliminate external, undesirable temperature disturbances. |
| |
Keywords: | double Mach-Zehnder interferometry optical heterodyne detection immunity from environmental disturbances polarization maintaining single-mode fiber fiber-coil deformation sensor |
本文献已被 SpringerLink 等数据库收录! |