Photowritten high-Q cavities in two-dimensional chalcogenide glass photonic crystals.
We demonstrate a high-Q(approximately 125,000) photonic crystal (PhC) cavity formed using a postprocessing optical exposure technique where the refractive index of a photosensitive chalcogenide PhC is modified locally. The evolution of the cavity resonances was monitored in situ during writing using a tapered fiber evanescent coupling system, and the Q of 125,000 represents 1 order of magnitude increase over previously reported cavities in two-dimensional chalcogenide glass PhC.
Lee
Michael W
MW
Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), IPOS, School of Physics,University of Sydney, Sydney, NSW 2006, Australia. mlee@physics.usyd.edu.au
Grillet
Christian
C
Tomljenovic-Hanic
Snjezana
S
Mägi
Eric C
EC
Moss
David J
DJ
Eggleton
Benjamin J
BJ
Gai
Xin
X
Madden
Steve
S
Choi
Duk-Yong
DY
Bulla
Douglas A P
DA
Luther-Davies
Barry
B