Multimode interference-based fiber-optic displacement sensor

被引：204

作者：

Mehta, A ^{[1
]}

Mohammed, W ^{[1
]}

Johnson, EG ^{[1
]}

机构：

[1] Univ Cent Florida, CREOL, Sch Opt, Orlando, FL 32816 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2003年 / 15卷 / 08期

关键词：

finite-difference beam-propagation method (FDBPM); linearly polarized modes; multimode interference; reimaging theory;

D O I：

10.1109/LPT.2003.815338

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A new concept for a multimode interference-based fiber-optic displacement sensor is investigated both theoretically and experimentally. By applying multimode interference and reimaging theory to optical fibers, a displacement sensor consisting of only a section of multimode fiber fusion spliced to a single-mode fiber can be readily fabricated. Observation and analysis of the power reflected off of a surface and back through the device over a finite wavelength range provides enough information to use the device as a calibrated displacement sensor over a large displacement range.

引用

页码：1129 / 1131

页数：3