Creating large bandwidth photonic crystal slab waveguide by tailoring the dispersion curve of waveguide mode

Kan Chen; Dongxiao Yang; Wenjun He

doi:10.1117/12.823337

19 February 2009 Creating large bandwidth photonic crystal slab waveguide by tailoring the dispersion curve of waveguide mode

Kan Chen, Dongxiao Yang, Wenjun He

Author Affiliations +

Proceedings Volume 7279, Photonics and Optoelectronics Meetings (POEM) 2008: Optoelectronic Devices and Integration; 72791Q (2009) https://doi.org/10.1117/12.823337
Event: Photonics and Optoelectronics Meetings, 2008, Wuhan, China

Abstract

In the photonic crystal (PhC) slab, a waveguide is typically created by introducing a line defect into the perfect periodic lattice, and the waveguide modes will appear within the photonic band gap. An practical waveguide should possess sufficient single-mode bandwidth and display minimal group velocity dispersion within the bandwidth. By adjusting the air holes adjacent to the line defect, the dispersion curves of waveguide modes can be tailored and the requests above are reached. In this way, an air-bridge slab waveguide gets a single-mode bandwidth of 0.025 c/a, where c is the light speed in vacuum and a is the lattice constant of the photonic crystal. In addition, an SOI (Silicon-on-Insulator) slab waveguide receives a single-mode bandwidth of 0.007 c/a and a frequency window of 0.003 c/a with a nearly constant group velocity of 0.082 c.

Citation Download Citation

Kan Chen, Dongxiao Yang, and Wenjun He "Creating large bandwidth photonic crystal slab waveguide by tailoring the dispersion curve of waveguide mode", Proc. SPIE 7279, Photonics and Optoelectronics Meetings (POEM) 2008: Optoelectronic Devices and Integration, 72791Q (19 February 2009); https://doi.org/10.1117/12.823337

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