A cavity-free setup to generate short pulses at high repetition rate is introduced, which is based on four-wave mixing (FWM) in cascaded semiconductor optical amplifiers (SOAs). High repetition rate picosecond-pulse is important in optical communication and all-optic information processing systems. Cavity-free setup based on SOA means without ring cavity, which is stable and easy to be large-scale integrated. In this paper, we obtain picosecond-pulse around 10GHz repetition rate and the side-mode suppression ratio is 23 dB. Moreover, the repetition rate and center wavelength of optical pulse is tunable.
Wenlong Tai, Tianxin Yang, Chunfeng Ge, and Dongfang Jia, "Picosecond-pulse generation over 10 GHz repetition rate based on cascaded semiconductor optical amplifiers," Proc. SPIE 10103, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications X, 101030I (Presented at SPIE OPTO: January 31, 2017; Published: 30 March 2017); https://doi.org/10.1117/12.2256791.
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