Design of Silicon Photonic Crystal Waveguides for High Gain Raman Amplification Using Two Symmetric Transvers-Electric-Like Slow-Light Modes
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概要
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We designed silicon photonic crystal (PhC) waveguides (WGs) for efficient silicon Raman amplifiers and lasers. We adopted narrow-width WGs to utilize two symmetric transvers-electric-like (TE-like) guided modes, which permit efficient external coupling for both the pump and Stokes waves. Modifying the size and shape of air holes surrounding the line-defect WG structures could tune the frequency difference between these two modes, at the Brillouin-zone edge, to match the Raman shift of silicon. Thus, small group velocities are also available both for pump and Stokes waves simultaneously, which results in a large enhancement of Raman gain. The enhancement factor of the Raman gain in the designed structure is more than 100 times that reported previously.
- 2013-04-25
著者
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Iwamoto Satoshi
Institute For Nano Quantum Information Electronics University Of Tokyo
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Arakawa Yasuhiko
Institute For Nano Quantum Information Electronics (nanoquine) The University Of Tokyo
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Iwamoto Satoshi
Institute of Industrial Science (IIS), The University of Tokyo, Meguro, Tokyo 153-8505, Japan
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Hsiao Yi-Hua
Institute of Industrial Science (IIS), The University of Tokyo, Meguro, Tokyo 153-8505, Japan
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