Abstract
Three-mode multiplexers were made by post-processing existing SMF-28 fibres. The input was three identical SMFs which were fused together and adiabatically tapered to form a multimode output core. The light was converted to the LP01 and two LP11 with low loss (0.6-0.7 dB). The mode multiplexers were broadband.
© 2015 Optical Society of America
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