Multiplexing a serial array of tapered optical fibre sensors using coherent optical frequency domain reflectometry

作者：Jarzebinska Renata^*; Chehura Edmon; James Stephen W; Tatam Ralph P

来源：Measurement Science and Technology, 2012, 23(10): 105203.

DOI：10.1088/0957-0233/23/10/105203

• optical fibre sensor
• optical fibre tapers
• coherent optical frequency domain reflectometry
• OFDR
• multiplexing
• refractive index measurements

The use of high spatial resolution optical frequency domain reflectometry (OFDR) to facilitate the multiplexing of a serial array of tapered optical fibre sensors is presented. Changes in the attenuation of the Rayleigh backscattered signal from the tapered regions are used to monitor the refractive index of the surrounding medium. The use of an array of five tapered regions to monitor liquid flow is demonstrated. An analysis of the performance of the system shows that, for tapers of diameter 50 mu m, up to nine tapers could be multiplexed using commercial OFDR instrumentation.

• 出版日期2012-10