title: Spectral self-imaging effect by time-domain multilevel phase modulation of a periodic pulse train.
abstract: We propose and analyze a novel (to our knowledge) approach to implement the spectral self-imaging effect of optical frequency combs. The technique is based on time-domain multilevel phase-only modulation of a periodic optical pulse train. The method admits both infinite- and finite-duration periodic pulse sequences. We show that the fractional spectral self-imaging effect allows one to reduce by an integer factor the comb frequency spacing. Numerical simulation results support our theoretical analysis.
authors.affiliation: Nanophotonics Technology Center, Universidad Politécnica de Valencia, Valencia, Spain. jcaraqui@ntc.upv.es
authors.forename: José
authors.initials: J
authors.lastname: Caraquitena
authors.forename: Marta
authors.initials: M
authors.lastname: Beltrán
authors.forename: Roberto
authors.initials: R
authors.lastname: Llorente
authors.forename: Javier
authors.initials: J
authors.lastname: Martí
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Muriel