The performance of optical power transmission through a side-polished fiber on which materials of different refractive indices were overlaid is investigated. The experiments show that the transmitted optical power through the side-polished fiber varies with the refractive index of the overlaid material. The result of our experiments fits well the theoretical calculation. Side-polished fiber manufactured by wheel polishing method can be used not only to control optical power transmission through the fiber core but also as a refractive index sensor.
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Key Laboratory of Disaster Forecast and Control in Engineering Ministry of Education of China Jinan University Guangzhou and Department of Optoelectronic Engineering.Jinan University Guangzhou 510632 China;