Abstract
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.
© 2012 IEEE
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