کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9699780 1461938 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spatial-frequency multiplexed fiber-optic Fizeau strain sensor system with optical amplification
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Spatial-frequency multiplexed fiber-optic Fizeau strain sensor system with optical amplification
چکیده انگلیسی
A novel method for multiplexing fiber-optic Fizeau strain sensors with optical amplification is proposed and demonstrated. This method overcomes the two intrinsic disadvantages of fiber-optic Fabry-Perot (F-P) strain sensors, i.e. weak signal and difficult multiplexing. The amplified spontaneous emission (ASE) and optical amplification are used simultaneously to enhance the interferometric signal considerably. A Fizeau interferometer formed by two fiber ends with a quite different reflectivity is used to replace the F-P cavity in sensor head design. Such a Fizeau cavity can enlarge the cavity length by at least an order of magnitude and allows more than 10 sensors to be multiplexed simultaneously by using spatial-frequency multiplexing. The operating principle of the sensor system is discussed and an experiment is carried out to verify the concept of the method proposed. It is anticipated that such a sensor system could find important applications for health monitoring of large structures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volume 120, Issue 2, 17 May 2005, Pages 354-359
نویسندگان
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