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A completely open cavity realized with photonic crystal wedges

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Abstract

A completely open cavity, which is formed by three 60-degree wedges of a photonic crystal with negative effective index, is introduced. Such a realizable design for a completely open cavity (i.e., without any reflective wall in the radial direction) is the first of its kind ever been reported. Due to the negative effective refraction index of the photonic crystal and the high transmission at the photonic crystal/air interfaces, a closed path with zero optical path is formed for the resonance. The present open cavity is very suitable for use as a biosensor as it has large air wedges into which a liquid measurand can flow easily.

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Authors and Affiliations

  1. Centre for Optical and Electromagnetic Research, Joint Research Centre of Photonics of the Royal Institute of Technology (Sweden), Stockholm, Sweden

    He Sai-ling & Ruan Zhi-chao

  2. Zhejiang University, Zhejiang University, 310027, Hangzhou, China

    He Sai-ling & Ruan Zhi-chao

  3. Division of Electromagnetic Theory, Alfven Laboratory, Royal Institute of Technology, S-100 44, Stockholm, Sweden

    He Sai-ling

Authors
  1. He Sai-ling
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  2. Ruan Zhi-chao
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Additional information

Project supported by the National Basic Research Program (973) of China (No. 2004CB719801), and the National Natural Science Foundation of China (Nos. 90101024 and 60378037)

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Sai-ling, H., Zhi-chao, R. A completely open cavity realized with photonic crystal wedges. J. Zheijang Univ.-Sci. A 6, 355–357 (2005). https://doi.org/10.1631/jzus.2005.A0355

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  • DOI: https://doi.org/10.1631/jzus.2005.A0355

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