Abstract
We demonstrate a high performance fused-type mode selective coupler that couples the LP11 mode of a two-mode fiber and the LP01 mode of a matching single-mode fiber. The phase-matching condition was satisfied by etching and pre-pulling of a two-mode fiber. The excess loss and the maximum coupling ratio of 0.15dB and 92%, respectively, are achieved.
© 2000 Optical Society of America
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