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23 February 2018 Thirteen coherent comb lines generated by a single integrated modulator
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A flexible flat optical frequency comb (OFC) generator based on a single integrated polarization-multiplexing dual-drive Mach–Zehnder modulator (PM-DMZM) and a single RF source is proposed and demonstrated. Only one PM-DMZM is required, which guarantees the simplicity. Due to the additional controllable parameter of the polarization as compared with conventional schemes, flat coherent OFCs can be obtained with relatively small modulation indices. A theoretical model is established and an experiment is carried out. Five-, 7-, 9-, 11- and 13-line OFCs with flatness of 0.5, 0.7, 1.2, 1.65, and 2.7 dB are experimentally demonstrated, respectively.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2018/$25.00 © 2018 SPIE
Dan Zhu, Zhiwen Chen, Wenjuan Chen, and Shilong Pan "Thirteen coherent comb lines generated by a single integrated modulator," Optical Engineering 57(2), 026116 (23 February 2018).
Received: 1 October 2017; Accepted: 12 January 2018; Published: 23 February 2018

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