Calculating the coupling efficiency of the laser diode to the semi-tapered multimode fiber by ray-tracing method
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Corresponding author:
FENG Guo-ying, guoying_feng@yahoo.com.cn
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Received Date:
2007-04-02
Accepted Date:
2007-08-29
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Abstract
In order to analyze the factors which affect the coupling efficiency between LD and the semi-tapered multimode fiber,considering the multi-reflection on the tapered surface,using improved ray-tracing algorithm,the coupling efficiency of LD to the semi-tapered multimode fiber without cladding was calculated in different cases separately,such as different semi-tapered angle or different semi-tapered width,or different relative shift and incline.The results indicated that when semi-tapered width value was appropriate,the influence of the tapered angle on the coupling efficiency was unconspicuous;The coupling efficiency was sensitive to the relative shift,while it was inertial to the relative incline.
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