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New Configuration of Ring Resonator in Photonic Crystal Based on Self-Collimation |
| SHEN Xiao-Peng1, HAN Kui1, YUAN Fang2, LI Hai-Peng1, WANG Zi-Yu1, ZHONG Qi1 |
| 1Department of Physics, China University of Mining and Technology, Xuzhou 2211162College of Applied Science and Technology, China University of Mining and Technology, Xuzhou 221116 |
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| Cite this article: |
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SHEN Xiao-Peng, HAN Kui, YUAN Fang et al 2008 Chin. Phys. Lett. 25 4288-4291 |
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Abstract We propose a novel ring resonator configuration in a channelless photonic crystal. The proposed ring resonator utilizes the self-collimation effect and the bending and splitting mechanisms of line defects to route the propagation of light, instead of conventional indexed-guided waveguides or photonic crystal band gap waveguides. The finite-difference time-domain method (FDTD) is used to investigate the characteristics of the ring resonator. The new design exhibits an ON--OFF contrast with an extinction ratio of more than 12dB, and has an ultra-compact footprint of 3.3×3.3μm2 when it operates at the optical communication wavelength λ=1.55μm. The design presented may find applications in the areas including ultra-compact optical switch and wavelength filer in integrated optical circuits.
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| Keywords:
42.60.Da
42.70.Qs
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Received: 12 September 2008
Published: 27 November 2008
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| PACS: |
42.60.Da
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(Resonators, cavities, amplifiers, arrays, and rings)
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42.70.Qs
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(Photonic bandgap materials)
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