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Updated: Aug 30, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Analysis of adiabatic coupling between photonic crystal single-line-defect and coupled-resonator optical waveguides
P Sanchis1, J Garcia, A Martinez
1Fibre Radio Group, Instituto de Aplicaciones de las Tecnología de la Información y de las Comunicaciones Avanzadas, Universidad Politécnica de Valencia, Valencia 46022, Spain. pabsanki@dcom.upv.es
Abstract:
A detailed analysis of adiabatic coupling between conventional photonic crystal single-line-defect and coupled-resonator optical waveguides is reported. Adiabatic coupling by progressive variation of the radii of the spacing defects between cavities is investigated. Flat transmission spectra with coupling efficiencies greater than 90% are achieved in a broad frequency range with short coupling lengths. Moreover, we find that flat transmission at low frequencies requires longer coupling lengths partly because the requirements imposed for adiabatic transmission in photonic crystals are violated.
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