Engineering of planar photonic crystal waveguides on silicon-on-insulator for larger guiding bandwidth

Amir H. Atabaki; Ehsan Shah Hosseini; Babak Momeni; Ali Adibi

doi:10.1117/12.778575

28 January 2008 Engineering of planar photonic crystal waveguides on silicon-on-insulator for larger guiding bandwidth

Amir H. Atabaki, Ehsan Shah Hosseini, Babak Momeni, Ali Adibi

Proceedings Volume 6901, Photonic Crystal Materials and Devices VII; 690117 (2008) https://doi.org/10.1117/12.778575
Event: Integrated Optoelectronic Devices 2008, 2008, San Jose, California, United States

Abstract

Photonic crystal waveguides (PCW) on silicon-on-insulator (SOI) are considered as a promising guiding platform with flexible guiding properties for dense photonics integration. Although SOI is a versatile material for photonics integration, PCWs fabricated on SOI substrates suffer from small guiding bandwidth due to the coupling to leaky TM-like modes. The purpose of this work is to present a systematic approach to increase the low-loss guiding bandwidth of PCWs on SOI. This has been achieved by reducing the interaction of low-group-velocity modes with the surrounding photonic crystal. By this method the low-loss bandwidth of a W1 PCW is increased from 2.5 nm to 12 nm which is the highest reported for this type of waveguide. We also present a detailed analysis of transmission properties of W1 PCWs and elaborate on the coupling to TM-like guided modes present in the low-loss transmission bandwidth of this device.

Citation Download Citation

Amir H. Atabaki, Ehsan Shah Hosseini, Babak Momeni, and Ali Adibi "Engineering of planar photonic crystal waveguides on silicon-on-insulator for larger guiding bandwidth", Proc. SPIE 6901, Photonic Crystal Materials and Devices VII, 690117 (28 January 2008); https://doi.org/10.1117/12.778575

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