Adiabatically-tapered fiber mode multiplexers

S. Yerolatsitis, I. Gris Sanchez, T. A. Birks

Research output: Contribution to journalArticlepeer-review

151 Citations (SciVal)


Simple all-fiber three-mode multiplexers were made by adiabatically merging three dissimilar single-mode cores into one multimode core. This was achieved by collapsing air holes in a photonic crystal fiber and (in a separate device) by fusing and tapering separate telecom fibers in a fluorine-doped silica capillary. In each case the LP01 mode and both LP11 modes were individually excited from three separate input cores, with losses below 0.3 and 0.7 dB respectively and mode purities exceeding 10 dB. Scaling to more modes is challenging, but would be assisted by using single-mode fibers with a smaller ratio of cladding to core diameter.

Original languageEnglish
Pages (from-to)608-617
Number of pages10
JournalOptics Express
Issue number1
Early online date6 Jan 2014
Publication statusPublished - 13 Jan 2014


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