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Reduction of inter-channel crosstalk using Mach-Zehnder type filter in digital/RF optical transmission link

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4 Author(s)
S. -H. Lee ; Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea ; Y. -Y. Won ; H. -D. Jung ; S. -K. Han

An experimental demonstration and evaluation of a digital/RF WDM link system is presented, which transmits 622 Mbit/s digital data stream and 900 MHz RF carrier modulated by 44.74 Mbit/s over a singlemode fibre and then simultaneously detects these signals using a single photodiode. To reduce the crosstalk between adjacent channels, a novel suppression scheme employing Mach-Zehnder type filter (MZF) is proposed. The proposed cascade configuration results in the enhanced CNR and Q factors compared to other schemes which adopt the conventional filtering.

Published in:

IEE Proceedings - Optoelectronics  (Volume:152 ,  Issue: 4 )