Ultra-compact mode-split silicon microring resonator for format conversion from NRZ to FSK

QC 20141015
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 urn 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.

Li, QiangKTH,Mikroelektronik och tillämpad fysik, MAP(Swepub:kth)u1wzb5qt (författare)
Zhang, ZiyangKTH,Mikroelektronik och tillämpad fysik, MAP(Swepub:kth)u12ueuqj (författare)
Qiu, MinKTH,Mikroelektronik och tillämpad fysik, MAP(Swepub:kth)u11okd66 (författare)
Su, Y. (författare)
KTHMikroelektronik och tillämpad fysik, MAP (creator_code:org_t)

Ingår i:Proceedings of SPIE - The International Society for Optical Engineering: SPIE

Av författaren/redakt...: Liu, F.; Li, Qiang; Zhang, Ziyang; Qiu, Min; Su, Y.

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