Chinese Journal of Quantum Electronics, Volume. 28, Issue 1, 73(2011)

Low power optical switch based on guided resonance of photonic crystal slab

Shuai CHEN*... Chun-xia WANG, Hong-wei LIU, Qiang KAN, Xing-sheng XU and Hong-da CHEN |Show fewer author(s)
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    The wavelength and angle dependent optical transmission of two-dimensional photonic crystal slab are calculated using rigorous coupled wave analysis (RCWA) method. The relationship between guided resonance of spectrum and the band structure of two-dimensional photonic crystal slab is investigated. Based on InP material photonic crystal slab, angle resolved and wavelength resolved optical switches are designed utilizing the characterization of low transmission and high quality factor of guided resonance. These switches operate at the wavelength of 1550 nm. It shows that the quality factor of guided resonance mode in the transmission spectrum can reach 105, and achieve an on-off contrast of nearly 100% with the nonlinear refractive index change of 10-4. As the signal light and pump light couple with the guided resonance modes of photonic crystal slab respectively, the field intensity of pump light is enhanced, and the pump energy is reduced to only 184 fJ. To our knowledge, this is the lowest energy needed for optical switcher.

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    CHEN Shuai, WANG Chun-xia, LIU Hong-wei, KAN Qiang, XU Xing-sheng, CHEN Hong-da. Low power optical switch based on guided resonance of photonic crystal slab[J]. Chinese Journal of Quantum Electronics, 2011, 28(1): 73

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    Paper Information

    Received: Mar. 26, 2010

    Accepted: --

    Published Online: Feb. 22, 2011

    The Author Email: Shuai CHEN (chenshuai@semi.ac.cn)

    DOI:

    CSTR:32186.14.

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