文章基本信息

标题：Demonstration of CSRZ Signal Generator Using Single-Stage Mach-Zehnder Modulator and Wideband CMOS Signal Mixer
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作者：Kang, Sae-Kyoung ; Lee, Dong-Soo ; Cho, Hyun-Woo 等
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：2008
卷号：30
期号：2
页码：249-254
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：In this paper, we demonstrate an electrically band-limited carrier-suppressed return-to-zero (EB-CSRZ) signal generator operating up to a 10 Gbps data rate comprising a single-stage Mach-Zehnder modulator and a wideband signal mixer. The wideband signal mixer comprises inverter stages, a mixing stage, and a gain amplifier. It is implemented by using a 0.13 CMOS technology. Its transmission response shows a frequency range from DC to 6.4 GHz, and the isolation response between data and clock signals is about 21 dB at 6.4 GHz. Experimental results show optical spectral narrowing due to incorporating an electrical band-limiting filter and some waveform distortion due to bandwidth limitation by the filter. At 10 Gbps transmission, the chromatic dispersion tolerance of the EB-CSRZ signal is better than that of NRZ-modulated signal in single-mode fiber.
关键词：CSRZ;modulation format;optical transmitter;CMOS integrated circuit