Abstract
We proposed an effective method to control the incident light power distribution ratio in each core of a core circular symmetrical distribution multi-core optical fiber.This method is realized by tapering the multi-core fiber to be a bi-tapered shape after fusing the multi-core fiber with a normal single mode fiber on the condition of core alignment.Based on the coupling theoretical model and analysis,the controlling method is introduced,and the results are demonstrated by both theory and experiment.Finally,this incident power distribution controlling method provides a helpful and potential application prospect for multi-core optical fibers devices and sensors.
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