1. Multiplexing a serial array of tapered optical fibre sensors using coherent optical frequency domain reflectometry
- Author
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Stephen W. James, Renata Jarzebinska, Ralph P. Tatam, and Edmon Chehura
- Subjects
Materials science ,Optical fiber ,business.industry ,Applied Mathematics ,Instrumentation ,Attenuation ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Signal ,Multiplexing ,law.invention ,010309 optics ,symbols.namesake ,Optics ,law ,0103 physical sciences ,symbols ,Rayleigh scattering ,0210 nano-technology ,Reflectometry ,business ,Engineering (miscellaneous) ,Refractive index - Abstract
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??m, up to nine tapers could be multiplexed using commercial OFDR instrumentation.
- Published
- 2012
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