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13 April 2005 Enhancing the optical nonlinearity by 1D thin-film photonic crystals with Kerr defect cavities
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Abstract
In this paper, we study the linear and nonlinear responses of 1-D photonic bandgap (PBG) structures. We show that, the nonlinear interaction can be greatly enhanced by the use of Kerr defect modes in a 1D dielectric photonic crystal structure, such as low-intensity bistability and multistability, and by optimizing the design of the layer sequence. 1-D PBG structure can also be promising candidate as low-intensity nonlinear phase shifter. Nonlinear z-scan measurements of a 3-cavity thin-film PBG sample show that the nonlinearity is enhanced over the native material by a factor over 30, while maintaining a bandwidth greater than 1T Hz, which is great for all-optical switching.
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Yan Chen, Yongdong Liu, and Steve Blair "Enhancing the optical nonlinearity by 1D thin-film photonic crystals with Kerr defect cavities", Proc. SPIE 5733, Photonic Crystal Materials and Devices III, (13 April 2005); https://doi.org/10.1117/12.592031
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