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3 March 2016 Actively stabilized silicon microring resonator switch arrays for optical interconnects
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We report our progress towards actively stabilized silicon microring switch arrays for optical interconnects using our recently proposed slope-detection method. The stabilization scheme utilizes an in-resonator all-silicon photomonitor that detects the detuning of the microring resonance wavelength from a carrier wavelength at 1550 nm. The photomonitor utilizes linear sub-bandgap surface-state absorption (SSA) on the unpassivated air-silicon waveguide interfaces. Our experiments demonstrate SSA-based photomonitors with a cavity-enhanced responsivity of ~ 1.9- 2.3 mA/W upon a bias voltage of -1 V. We demonstrate actively stablized 2-by-2 microring switch fabrics with intensity variations of ~1 dB over a temperature modulation of ~7 °C among the four transmission channels.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yu Li and Andrew W. Poon "Actively stabilized silicon microring resonator switch arrays for optical interconnects", Proc. SPIE 9751, Smart Photonic and Optoelectronic Integrated Circuits XVIII, 97510Q (3 March 2016);

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