Microresonator-enhanced four-wave mixing

Kuncheng Zheng; Vishnupriya Govindan; Steve Blair

doi:10.1117/12.647188

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10 February 2006 Microresonator-enhanced four-wave mixing

Kuncheng Zheng, Vishnupriya Govindan, Steve Blair

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Proceedings Volume 6103, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications V; 61030Q (2006) https://doi.org/10.1117/12.647188
Event: Lasers and Applications in Science and Engineering, 2006, San Jose, California, United States

Abstract

Four-wave mixing (FWM) is an important mechanism for frequency conversion and fast optical switching in all-optical communication networks. In this paper, we demonstrate that microring resonator filters can generate significant conversion efficiency with sub-millimeter physical size. Microresonator based filters not only have high finesse, which can enhance nonlinear efficiency, but also have periodic passbands, which satisfy the phase matching condition of FWM automatically. Non-degenerate FWM in direct-coupled ring resonator (DCRR) filters and ring-based Mach-Zehnder interferometers (RMZI) is studied in this paper. Both structures provide greater than 10% conversion efficiency (defined by the converted intensity divided by the initial signal intensity) with low values of n₂*I_p, where n₂ is the nonlinear refractive index and I_p is the initial pump intensity; the DCRR allows greater frequency conversion bandwidth within the filter passband. We also compare the efficiency of the ring-based filters and a straight waveguide with the same effective length. We thus demonstrate that ring-based filters are effective devices for on-chip wavelength conversion for WDM network.

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Kuncheng Zheng, Vishnupriya Govindan, and Steve Blair "Microresonator-enhanced four-wave mixing", Proc. SPIE 6103, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications V, 61030Q (10 February 2006); https://doi.org/10.1117/12.647188

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