基於彎曲損耗浸水監測光纖感測器之設計與實現

Design and Implementation of Fiber-Optic Sensors Based on Bending Loss for Water Immersion Monitoring

劉冠志(Kuan-Chih Liu)

指導教授 ： 楊淳良

淡江大學/工學院/電機工程學系碩士在職專班/碩士(2015年)

https://doi.org/10.6846/TKU.2015.00490

摘要

在本論文中，在浸水監測所提出的光纖感測器，其具有鎖定和非鎖定型，是基於彎曲損耗機制。為了實現簡單，低成本和易於使用的結構，我們採用浮球式水位感測器的改良結構。所提出的感測器是非常適用於實現於準分佈式感測網路。
本設計的感測器都具有鑑別度超過3分貝以提供浸水監測，並具有穩定的鎖定特性。

關鍵字

彎曲損失 ； 水位感測 ； 光纖感測

並列摘要

In this thesis, the proposed fiber-optic sensors for water immersion monitoring, which have the latch and non-latch types, are based on bending loss mechanism. To achieve simple, low-cost and easy-to-use structures, we adopt the improved structures of float-type water level sensor. The proposed sensors are very suitable for implementing in quasi-distributed sensing networks.
The designed sensors all have the discrimination over 3 dB for offering water immersion monitoring and have the stable latching property.

並列關鍵字

bending loss ； water level sensor ； optical fiber sensor

參考文獻

[18]陳志康,“光纖液位感測器之設計與實現”,淡江大學,碩士論文,

[13] H. Renner, “Bending losses of coated single-mode fibers a simple approach,” Journal of Lightwave Technology, Vol. 10, PP. 544-551, May 1992.

[14] R. Morgan et al., “Wavelength dependence of bending loss in monomode optical fibers effect of the fiber buffer coating,” Optics Letters, Vol. 15, No. 17, Sep. 1990.

[15] D. Marcuse, “Curvature loss formula for optical fibers,” Optical Society, Vol. 66, PP. 216-220, 1976.

[16] L. A. Ribeiro et al., “Fiber optic bending loss sensor for application on monitoring of embankment dams,” Microwave & Optoelectronics Conference (IMOC), 2011 SBMO/IEEE MTT-S International., pp. 637-641.