title: The influence of substrate on SOI photonic crystal thermo-optic devices.
abstract: 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.
authors.affiliation: Department of Electrical and Computer Engineering, Rutgers University, Piscataway, NJ 08854, USA.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Song
authors.forename: Manjit
authors.initials: M
authors.lastname: Chahal
authors.forename: George K
authors.initials: GK
authors.lastname: Celler
authors.forename: Yogesh
authors.initials: Y
authors.lastname: Jaluria
authors.forename: Graham T
authors.initials: GT
authors.lastname: Reed
authors.forename: Wei
authors.initials: W
authors.lastname: Jiang
mesh_terms: D004553:Electric Conductivity; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006361:Heating / Q000295:instrumentation*; D055096:Optical Devices; D012825:Silicon / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D013696:Temperature
chemical_list: D012825:Silicon