Generation of coherent optical multi-carriers using concatenated, dual-drive Mach-Zehnder and phase modulators

Shumin Zou; Yiguang Wang; Yufeng Shao; Junwen Zhang; Jianjun Yu; Nan Chi

doi:doi:10.3788/col201210.070605

Chinese Optics Letters, 2012, 10 (7): 070605, Published Online: Apr. 5, 2012

Generation of coherent optical multi-carriers using concatenated, dual-drive Mach-Zehnder and phase modulators Download： 518次

论文大纲

Shumin Zou Yiguang Wang Yufeng Shao Junwen Zhang Jianjun Yu Nan Chi

Author Affiliations

060.1660 Coherent communications 060.2330 Fiber optics communications 060.2380 Fiber optics sources and detectors

Abstract

The generation of coherent optical subcarriers based on a concatenated dual-drive Mach-Zehnder intensity modulator (IM) and two phase modulators (PMs) is proposed and experimentally demonstrated. The modulation index and DC bias of PM+IM modulation are theoretically investigated. Theoretical analysis and numerical study are also carried out to examine the proposed scheme. We use 25-GHz RF synchronous sinusoidal signals to drive cascaded two-stage PMs and IM, through which we generate 28 subcarriers with peak power fluctuations less than 4 dB. The measured tone-to-noise ratio of the subcarrier is higher than 40 dB. The experimental results show that for 100-Gb/s polarization multiplexing QPSK signal, the receiver sensitivity of the back-to-back signal is -28.6 dBm, and the power penalty is lower than 1 dB after 100-km transmission at the BER of 1 \times 10^{-9}.

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Shumin Zou, Yiguang Wang, Yufeng Shao, Junwen Zhang, Jianjun Yu, Nan Chi. Generation of coherent optical multi-carriers using concatenated, dual-drive Mach-Zehnder and phase modulators[J]. Chinese Optics Letters, 2012, 10(7): 070605.

Generation of coherent optical multi-carriers using concatenated, dual-drive Mach-Zehnder and phase modulators Download： 518次

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