Open AccessOrientation-insensitive azimuthally asymmetric mode rotator using chirally-coupled-core fiber
Author(s) -
Shoulin Jiang,
Lin Ma,
Zuyuan He
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.005146
Subject(s) - optics , extinction ratio , physics , mode volume , optical rotation , mode (computer interface) , materials science , optical fiber , wavelength , graded index fiber , fiber optic sensor , computer science , operating system
We propose orientation-insensitive azimuthally asymmetric mode rotators (OI-AAMR) using chirally-coupled-core fiber. The proposed mode rotator can convert azimuthally asymmetric mode to the orthogonal degenerate mode without the requirement for angle alignment. An LP 11 mode rotator with a rotation efficiency and an extinction ratio as high as 97% and 17 dB over C-band respectively, has been successfully demonstrated for any incident lobe orientation for the first time to the best of our knowledge. Owing to its circular center core structure, low insertion loss and crosstalk at the connection with few-mode fibers (FMF) can be expected. The proposed OI-AAMR has good scalability to higher-order modes and a mode rotator for LP 21 mode has been demonstrated as an example. The proposed mode rotators are promising for mode rotating applications in mode division multiplexing transmission.