Open AccessNew ring resonator configuration using hybrid photonic crystal and conventional waveguide structures
Author(s) -
Seung Hyun Kim,
Jingbo Cai,
JianHua Jiang,
Gregory P. Nordin
Publication year - 2004
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.002356
Subject(s) - resonator , free spectral range , optics , q factor , beam splitter , photonic crystal , waveguide , materials science , ring (chemistry) , full width at half maximum , optoelectronics , physics , laser , chemistry , organic chemistry
We propose a new method of realizing ring resonators based on hybrid photonic crystal and conventional waveguide structures. The proposed ring resonator configuration is advantageous compared with general ring resonator structures for its controllability of the quality (Q) factor, free spectral range (FSR), and full width at half maximum (FWHM) over a wide range. We show ring resonator structures based on a single mode waveguide with core and clad refractive indices of 1.5 and 1.465, respectively. A 35mum x 50mum ring resonator has a free spectral range (FSR) of 14.1nm and a quality (Q) factor of 595 with high optical efficiency (92.7%). By decreasing the size of the ring resonator to 35mum x 35mum, the FSR is increased to 19.8nm. Modifying the splitting ratio of the beam splitters permits the Q factor to be increased to 1600.