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Broadband Frequency Down-Conversion Using Coupled Cavity Structures in One-Dimensional Photonic Crystals |
| LI Wen-Hui;CHEN Li-Xue;TANG Dong-Hua;DING Wei-Qiang;LIU Shu-Tian |
| Department of Physics, Harbin Institute of Technology, Harbin 150001 |
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| Cite this article: |
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LI Wen-Hui, CHEN Li-Xue, TANG Dong-Hua et al 2006 Chin. Phys. Lett. 23 845-848 |
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Abstract The frequency down-conversion of one-dimensional photonic crystals with the coupled cavity structure is investigated by the nonlinear finite-difference time-domain method. The efficient frequency conversion is obtained by utilizing the advantages of the broad eigenfrequency band, the strong localization and the Bloch phase matching of the coupled cavity structure. More importantly, the signal frequency could be tuned continuously within the whole band of the coupled cavity structure (with a bandwidth to central frequency ratio of 5.4%), and the gains are homogeneous in the band.
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| Keywords:
42.65.Ky
42.70.Qs
42.60.Da
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Published: 01 April 2006
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| PACS: |
42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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42.70.Qs
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(Photonic bandgap materials)
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42.60.Da
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(Resonators, cavities, amplifiers, arrays, and rings)
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