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Theoretical and Experimental Study on Nonintrusive Light Injection Via Cladding in Plastic Optical Fibers

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5 Author(s)
Xiao Lin ; State Key Lab. of Transient Opt. & Photonics, Xi''an Inst. of Opt. & Precision Mech., Xi''an, China ; Liyong Ren ; Enshi Qu ; Jian Liang
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Based on the fiber macrobending and the refractive index matching technologies, a novel scheme of nonintrusive light injection, namely, the light signal is injected into the fiber core from the fiber cladding without any destruction, is proposed in plastic optical fibers (POFs). Using the ray-tracing method, a 3-D theoretical model is established to characterize the performance of the light injection. The influences of the fiber bending radius, the light source placement, and the surrounding medium refractive index on the light injection efficiency are investigated and assessed. Meanwhile, correlative experiments have also been conducted to contrast theoretical simulations. The experiment results fit theoretical ones well. This nonintrusive light injection technology in POFs might have many potential applications such as the optical signal uploading and downloading, the optical coupling, and the local area networks.

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Lightwave Technology, Journal of  (Volume:31 ,  Issue: 3 )