title: Optical frequency comb generation based on repeated frequency shifting using two Mach-Zehnder modulators and an asymmetric Mach-Zehnder interferometer.
abstract: A novel approach to generating an optical frequency comb based on repeated frequency shifting is proposed and experimentally demonstrated. The frequency shifting is implemented via optical carrier suppression and single-sideband modulation using two Mach-Zehnder modulators in conjunction with a bidirectional asymmetric Mach-Zehnder interferometer with wavelength-shifted transmission spectra along the opposite directions. A theoretical analysis is performed, which is confirmed by a proof-of-concept experiment. A stable optical comb covering a spectral range of 0.18 THz is generated.
authors.affiliation: Microwave Photonics Research Laboratory, School of Information Technology and Engineering University of Ottawa, Ottawa, ON, K1N 6N5, Canada.
authors.forename: Wangzhe
authors.initials: W
authors.lastname: Li
authors.forename: Jianping
authors.initials: J
authors.lastname: Yao
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D008872:Microwaves; D055096:Optical Devices; D013685:Telecommunications / Q000295:instrumentation*; D014159:Transducers