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
收藏
页码：1129 / 1131
页数：3
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