Extension of sensing distance in a ROTDR with an optimized fiber |
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| Authors: | Yandong Gong Ong Ling Chuen Michael Varghese Paulose |
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| Affiliation: | a Institute for Infocomm Research, 21 Heng Mui Keng Terrace, Singapore 119613, Singapore
b Beijing Jiaotong University, Institute of Lightwave Technology, Beijing 100044, China |
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| Abstract: | A sensing fiber, with a gradually increasing Raman-gain-coefficient (gR/Aeff)along the fiber length, and which can keep the received Raman Stokes power constant in a distributed Raman-based Fiber-optic temperature Sensor, is proposed. This method can be an additional and easy way to further extend the sensing distance of the distributed Raman Fiber-optic temperature Sensor. |
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| Keywords: | Fiber-optics sensors Nonlinear fiber optics Raman effect |
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