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Conferences > FBTA > 2014 > FTh4E > FTh4E.4

Generation of Optical Frequency Comb With Double Spectral Spacing Based on Two Cascaded Push-Pull Mach-Zehnder Modulators

Chong Yuhua, Yang Chun, Li Xianghua, Zhou Zhenghua, and Zhu Dezhao

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Abstract

We demonstrate an optical frequency comb having spectral spacing two times of the modulation frequency using two cascaded push-pull Mach-Zehnder modulators (MZMs). The optimized operating conditions for generating flattened comb lines are obtained by means of numerical method. Optical combs with 4 and 5 lines are experimentally generated with good flatness using two commercial X-cut LiNbO3 MZMs, where the spectral spacing is doubled to 20 GHz when modulated at 10 GHz.

© 2014 Optical Society of America

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