Open AccessMapping the broadband polarization properties of linear 2D SOI photonic crystal waveguides
Author(s) -
John Canning,
N. Skivesen,
Martin Kristensen,
Lars Hagedorn Frandsen,
Andrei V. Lavrinenko,
Cícero Martelli,
Amélie Têtu
Publication year - 2007
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.15.015603
Subject(s) - supercontinuum , silicon on insulator , optics , photonic crystal , broadband , physics , narrowband , polarization (electrochemistry) , photonics , optoelectronics , scattering , materials science , silicon , photonic crystal fiber , optical fiber , chemistry
Both quasi-TE and TM polarisation spectra for a silicon-on-insulator (SOI) waveguide are recorded over (1100-1700)nm using a broadband supercontinuum source. By studying both the input and output polarisation eigenstates we observe narrowband resonant cross coupling near the lowest quasi-TE mode cut-off. We also observe relatively broadband mixing between the two eigenstates to generate a complete photonic bandgap. By careful analysis of the output polarisation state we report on an inherent non-reciprocity between quasi TE and TM fundamental mode cross coupling. The nature of polarisation distinction in such bandgap structures is discussed in the context of polarisation scattering at an interface.