Open AccessHigh Q factor chalcogenide ring resonators for cavity-enhanced MIR spectroscopic sensing
Author(s) -
Pan Ma,
DukYong Choi,
Yi Yu,
Zhiyong Yang,
Khu Vu,
Thach G. Nguyen,
Arnan Mitchell,
Barry LutherDavies,
Steve Madden
Publication year - 2015
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.23.019969
Subject(s) - resonator , cladding (metalworking) , chalcogenide , materials science , optics , q factor , ring (chemistry) , chalcogenide glass , split ring resonator , optoelectronics , refractive index , infrared , physics , chemistry , organic chemistry , metallurgy
We report the characteristics of high Q factor chalcogenide ring resonators designed for sensing in the mid-infrared (MIR). The resonators consisted of an exposed Ge11.5As24Se64.5 core on a Ge11.5As24S64.5 bottom cladding and were fabricated in the racetrack coupled ring structure. Loaded Q factors at 5.2μm up to 58,000were obtained, corresponding to an intrinsic Q of 145,000 and a waveguide propagation loss of 0.84dB/cm.