title: Optical Nyquist pulse generation using a time lens with spectral slicing.
abstract: Optical Nyquist pulse generation based on a time lens with subsequent optical filtering is proposed. A nearly chirp-free 10-GHz 8.1-ps Nyquist pulse generator is experimentally demonstrated. By inserting group velocity dispersion (GVD) between cascaded phase and amplitude modulators, 11 tones ultraflat optical frequency comb (OFC) of 10-GHz frequency spacing within 0.9 dB power variation is obtained. The quasi-rectangular shape spectrum is then filtered out with a tunable rectangular-shaped optical band-pass filter (OBPF) and the quasi-linear chirp is compensated by a segment of standard single mode fiber (SSMF). By changing the wavelength of the continuous wave (CW) light, nearly chirp-free Nyquist pulses over C band are obtained. Furthermore, simultaneous dual-wavelength pulse generation is also demonstrated.
authors.forename: Dong
authors.initials: D
authors.lastname: Wang
authors.forename: Li
authors.initials: L
authors.lastname: Huo
authors.forename: Yanfei
authors.initials: Y
authors.lastname: Xing
authors.forename: Xiangyu
authors.initials: X
authors.lastname: Jiang
authors.forename: Caiyun
authors.initials: C
authors.lastname: Lou