Fiber-Optic Liquid Level Sensor

被引：48

作者：

Antonio-Lopez, Jose E. ^{[1
]}

May-Arrioja, Daniel A. ^{[2
]}

LiKamWa, Patrick ^{[3
]}

机构：

[1] INAOE, Photon & Opt Phys Lab, Dept Opt, Puebla 72000, Mexico

[2] Univ Autonoma Tamaulipas, UAM Reynosa Rodhe, Dept Elect, Reynosa 88779, Tamaulipas, Mexico

[3] Univ Cent Florida, Coll Opt & Photon, CREOL, Orlando, FL 32816 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2011年 / 23卷 / 23期

关键词：

Liquid-level sensor; multimode interference (MMI); optical fiber sensors;

D O I：

10.1109/LPT.2011.2170058

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 fiber-optic liquid level sensor based on multimode interference (MMI) effects is proposed and demonstrated. We show that MMI and self-image effects can be effectively applied for multiplexed liquid level sensing, because the natural response as a band-pass filter for each sensor is clearly distinct from each other, in the case for several sensors working at the same time. Using a standard 105/125 step-index multimode fiber (MMF) a simple discrete level sensor was fabricated, that can also discriminate the refractive index (RI) of the liquid during the level measurement. The MMI liquid level sensors are not only inexpensive, but their fabrication is simple.

引用

页码：1826 / 1828

页数：3

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