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Adiabatically tapered splice for selective excitation of the fundamental mode in a multimode fiber

By Yongmin Jung, Yoonchan Jeong, Gilberto Brambilla and David J. Richardson


We propose a simple and effective method to selectively excite the fundamental mode of a multimode fiber by adiabatically tapering a fusion splice to a single-mode fiber. We experimentally demonstrate the method by adiabatically tapering splice (taper waist=15 µm, uniform length=40 mm) between single-mode and multimode fiber and show that it provides a successful mode conversion/connection and allows for almost perfect fundamental mode excitation in the multimode fiber. Excellent beam quality (M^2~1.08) was achieved with low loss and high environmental stability

Topics: QC, TK
Year: 2009
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Provided by: e-Prints Soton
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