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Proceedings Paper

Ultra-compact mode-split silicon microring resonator for format conversion from NRZ to FSK
Author(s): Fangfei Liu; Qiang Li; Ziyang Zhang; Min Qiu; Yikai Su
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Paper Abstract

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.

Paper Details

Date Published: 18 November 2008
PDF: 8 pages
Proc. SPIE 7135, Optoelectronic Materials and Devices III, 713537 (18 November 2008); doi: 10.1117/12.802850
Show Author Affiliations
Fangfei Liu, Shanghai Jiao Tong Univ. (China)
Qiang Li, Royal Institute of Technology (Sweden)
Ziyang Zhang, Royal Institute of Technology (Sweden)
Min Qiu, Royal Institute of Technology (Sweden)
Yikai Su, Shanghai Jiao Tong Univ. (China)

Published in SPIE Proceedings Vol. 7135:
Optoelectronic Materials and Devices III
Yi Luo; Jens Buus; Fumio Koyama; Yu-Hwa Lo, Editor(s)

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