18 November 2008 Ultra-compact mode-split silicon microring resonator for format conversion from NRZ to FSK
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Proceedings Volume 7135, Optoelectronic Materials and Devices III; 713537 (2008) https://doi.org/10.1117/12.802850
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China
We propose and experimentally demonstrate all optical format conversion from non-return-to-zero (NRZ) format to frequency-shift-keying (FSK) format based on free carrier dispersion effect in a silicon mode-split microring resonator. The injection of the high-power NRZ signal generates free carriers leading to the blue shift of the spectrum when a '1' comes. Therefore, there is a selective filtering for the two probes with certain separation located at different position of the split mode according to the information carried by the NRZ signal. Then the NRZ signal is converted to the FSK format. The microring resonator features ultra-compact size with a radius of 10 μm thus is suitable for integration with silicon-on-insulator (SOI) based optical and electronic devices. The split mode can provide large and variable frequency deviation for the FSK signal. 1 Gb/s NRZ signal is successfully converted to FSK format with a frequency deviation of 40 GHz, which can find application for interconnection between a metropolitan area networks (MAN) and a passive optical network (PON) system.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fangfei Liu, Fangfei Liu, Qiang Li, Qiang Li, Ziyang Zhang, Ziyang Zhang, Min Qiu, Min Qiu, Yikai Su, Yikai Su, "Ultra-compact mode-split silicon microring resonator for format conversion from NRZ to FSK", Proc. SPIE 7135, Optoelectronic Materials and Devices III, 713537 (18 November 2008); doi: 10.1117/12.802850; https://doi.org/10.1117/12.802850

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