Open AccessThe influence of substrate on SOI photonic crystal thermo-optic devices
Author(s) -
Weiwei Song,
Manjit Chahal,
George K. Celler,
Yogesh Jaluria,
Graham T. Reed,
Wei Jiang
Publication year - 2013
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.21.004235
Subject(s) - silicon on insulator , materials science , substrate (aquarium) , optoelectronics , optics , waveguide , photonic crystal , silicon , photonics , physics , oceanography , geology
We investigate the influence of the substrate on a photonic crystal thermo-optic device on a silicon-on-insulator (SOI) platform. The substrate-induced thermo-optic tuning is obtained as a function of key physical parameters, based on a semi-analytic theory that agrees well with numeric simulations. It is shown that for some devices, the substrate's contribution to the thermo-optic tuning can exceed 10% for a heater located in the waveguide core and much higher for some other configurations. The slow response of the substrate may also significantly slow down the overall response time of the device. Strategies of minimizing the substrate's influence are discussed.