Fused taper technique for fiber coupling applications
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1.
State Key Laboratory of Tribology, Center for Photonics and Electronics, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China
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Corresponding author:
GONG Ma-li, gongml@mail.tsinghua.edu.cn
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Received Date:
2008-11-08
Accepted Date:
2008-12-26
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Abstract
In order to reduce coupling loss between different fibers in a fiber laser or amplifier,fused taper technique was applied to couple fibers.Based on theoretical analysis,when the laser signal transmitted from a large numerical aperture(NA)fiber into a small NA fiber,the transmitted power can be improved effectively with fused taper technique.In experiment,largemode fiber fusion splicer was applied to taper fibers.Different tapered fibers can be achieved with precise control of arc-discharged time and power,stepped size and velocity.The transmitted efficiency was improved from 50% to 85% with much lower coupling loss for the coupling between a standard single-mode fiber and a large-mode fiber based on fused taper technique.Fused taper technique offers a simple and practical method to couple different fibers.
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