摘要
A new technique to generate 40-GHz carrier-suppressed return-to-zero （CSRZ） optical pulse trains using only a 10-GHz dual-parallel Mach-Zehnder modulator （MZM） is presented and experimentally demon- strated. The spectrum of the generated CSRZ pulses is calculated by simulation and compared with conventional MZM-based RZ and CSRZ pulse trains. The experimental results demonstrate that CSRZ pulse trains are obtained, and that the carrier and the unwanted 20-GHz low-frequency component are suppressed by 25 dB. The technique can also be extended to 160-GHz CSRZ pulse generation when 40-GHz
A new technique to generate 40-GHz carrier-suppressed return-to-zero （CSRZ） optical pulse trains using only a 10-GHz dual-parallel Mach-Zehnder modulator （MZM） is presented and experimentally demon- strated. The spectrum of the generated CSRZ pulses is calculated by simulation and compared with conventional MZM-based RZ and CSRZ pulse trains. The experimental results demonstrate that CSRZ pulse trains are obtained, and that the carrier and the unwanted 20-GHz low-frequency component are suppressed by 25 dB. The technique can also be extended to 160-GHz CSRZ pulse generation when 40-GHz
基金
supported by the National Natural Science Foundation of China (No.60736036)
the National "863" Program of China (No.2009AA01Z256)
the Beijing Supporting Program (No.YB20091000301)
