Open AccessSelectively coupling core pairs in multicore photonic crystal fibers: optical couplers, filters and polarization splitters for space-division-multiplexed transmission systems
Author(s) -
Rodrigo M. Gerosa,
Claudecir R. Biazoli,
Cristiano M. B. Cordeiro,
Christiano J. S. de Matos
Publication year - 2012
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.20.028981
Subject(s) - optics , photonic crystal fiber , materials science , polarization (electrochemistry) , optical fiber , fiber optic splitter , multiplexing , photonics , optoelectronics , physics , telecommunications , fiber optic sensor , chemistry , computer science
Selective coupling a single pair of cores in a photonic crystal fiber with multiple, initially decoupled, cores is demonstrated through the use of a technique to locally post-process the fiber cross section. Coupling occurs when the hole between the selected core pair is collapsed over a short fiber section, which is accomplished by heating the section while the hole is submitted to an air pressure that is lower than that applied to all other holes in the microstructure. The demonstrated couplers present an estimated insertion loss of ~1 dB and exhibit spectral modulations with a depth of up to 18 dB and a high polarization sensitivity that can be exploited for polarization splitting or filtering in space-division-multiplexed optical interconnection and telecommunication links.