FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Modulation of Junction Defects Created by Crossing Photonic Crystal Waveguides |
LIN Xu-Sheng1**, LIU Jing-Lin1, ZHENG Yun-Bao1,2, LAN Sheng2 |
1School of Electronic and Information Engineering, Guangdong Polytechnic Normal University, Guangzhou 510665 2Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006
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Cite this article: |
LIN Xu-Sheng, LIU Jing-Lin, ZHENG Yun-Bao et al 2014 Chin. Phys. Lett. 31 014206 |
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Abstract In optical circuits, functional elements are often placed on waveguide junctions. We show that a junction in photonic crystals (PCs) possesses localized modes very close to the bandpass of waveguides. Their mode resonances and field patterns can be controlled by modulating the PC waveguides. It is expected that functions such as switching and routing could be developed naturally by using junction modes without any special design of microcavities. Our calculation results can be explained by the coupled mode theory.
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Received: 17 September 2013
Published: 28 January 2014
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PACS: |
42.70.Qs
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(Photonic bandgap materials)
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42.82.-m
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(Integrated optics)
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42.25.Bs
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(Wave propagation, transmission and absorption)
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