Utilization of thermal effects for silicon photonics

Daoxin Dai; Longhai Yu; Sitao Chen; Hao Wu

doi:10.1117/12.2192806

12 August 2015 Utilization of thermal effects for silicon photonics

Daoxin Dai, Longhai Yu, Sitao Chen, Hao Wu

Proceedings Volume 9624, 2015 International Conference on Optical Instruments and Technology: Micro/Nano Photonics and Fabrication; 962402 (2015) https://doi.org/10.1117/12.2192806
Event: International Conference on Optical Instruments and Technology 2015, 2015, Beijing, China

Abstract

Thermal effect plays a key role and has been utilized for various photonic devices. For silicon photonics, the thermal effect is usually important because of the large thermo-optical coefficient of silicon material. This paper gives a review for the utilization of thermal effects for silicon photonics. First, the thermal effect is very beneficial to realize energy-efficient silicon photonic devices with tunability/switchability (including switches, variable optical attenuators, etc). Traditionally metal micro-heater sitting on a buried silicon-on-insulator (SOI) nanowire is used to introduce a phase shift for thermal tunability by injecting a electrical current. An effective way to improve the energy-efficiency of thermal tuning is reducing the volume of the optical waveguide as well as the micro-heater. Our recent work on silicon nanophotonic waveguides with novel nano-heaters based on metal wires as well as graphene ribbons will be summarized. Second, the thermal resistance effect of the metal strip on a hybrid plasmonic waveguide structure can be utilized to realize an ultra-small on-chip photodetector available for an ultra-broad band of wavelength, which will also be discussed.

Citation Download Citation

Daoxin Dai, Longhai Yu, Sitao Chen, and Hao Wu "Utilization of thermal effects for silicon photonics", Proc. SPIE 9624, 2015 International Conference on Optical Instruments and Technology: Micro/Nano Photonics and Fabrication, 962402 (12 August 2015); https://doi.org/10.1117/12.2192806

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