Open AccessAdiabatically-tapered fiber mode multiplexers
Author(s) -
Stephanos Yerolatsitis,
Itandehui Gris-Sánchez,
T. A. Birks
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.000608
Subject(s) - tapering , photonic crystal fiber , materials science , optics , multi mode optical fiber , cladding (metalworking) , multiplexer , plastic clad silica fiber , single mode optical fiber , mode volume , all silica fiber , hard clad silica optical fiber , fiber , optical fiber , capillary action , plastic optical fiber , multiplexing , physics , telecommunications , composite material , computer graphics (images) , computer science
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.