This paper presents a new technique for flat optical frequency comb （OFC） generation, which is based on the nonlinear process of multiple four-wave mixing （FWM） effects. The nonlinear effects are significantly enh...This paper presents a new technique for flat optical frequency comb （OFC） generation, which is based on the nonlinear process of multiple four-wave mixing （FWM） effects. The nonlinear effects are significantly enhanced by using the proposed optical feedback scheme consisting of a single mode fiber （SMF）, two highly nonlinear fibers （HNLFs） with different zero dispersion wavelengths （ZDWs） and polarization beam splitters （PBSs）. Simulation results illustrate its efficiency and applicability of expanding a comb to 128 coherent lines spaced by only 20GHz within 6-dB power deviation.展开更多
基金This work was supported by the National Science Foundation of China （NSFC 61307088） and the Fundamental Research Funds for the Central Universities （ZYGX2012J008）. This work was supported by the National Natural Science Foundation of China （Nos. 61307088, 61205067, and 61505020） and the National Defense Pre-Research Foundation of China （9140A02050413DZ02023）.
文摘This paper presents a new technique for flat optical frequency comb （OFC） generation, which is based on the nonlinear process of multiple four-wave mixing （FWM） effects. The nonlinear effects are significantly enhanced by using the proposed optical feedback scheme consisting of a single mode fiber （SMF）, two highly nonlinear fibers （HNLFs） with different zero dispersion wavelengths （ZDWs） and polarization beam splitters （PBSs）. Simulation results illustrate its efficiency and applicability of expanding a comb to 128 coherent lines spaced by only 20GHz within 6-dB power deviation.
