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A simplified tunable frequency interval optical frequency comb generator using a single continuous-wave laser |
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| Authors: | LIU Li XU Tie-feng DAI Zhen-xiang DAI Shi-xun and andLIU Tai-jun |
| Affiliation: | Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China;Faculty of Information Engineering, Ningbo Dahongying University, Ningbo 315175, China,Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China,Institute of Ningbo Education, Ningbo 315016, China,Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China and Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China |
| Abstract: | We propose and demonstrate a simplified and tunable frequency interval optical frequency comb (OFC) generator based on a dual-drive Mach-Zehnder modulator (DD-MZM) using a single continuous-wave (CW) laser and low-power radio frequency (RF) driven signal. A mathematical model for the scheme is established. The 21- and 29-mode OFCs with frequency interval ranging from 6 GHz to 40 GHz are obtained under DD-MZM driven by a low-power RF signal within a maximum bandwidth of 1.12 THz. The generated OFCs exhibit spectral flatnesses of less than 0.5 dB and 0.8 dB within bandwidths of 160 GHz and 400 GHz, respectively. |
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