標題: | Optical filter requirements in an EML-based single-sideband PAM4 intensity-modulation and direct-detection transmission system |
作者: | Chen, Hsing-Yu Kaneda, Noriaki Lee, Jeffrey Chen, Jyehong Chen, Young-Kai 光電工程學系 Department of Photonics |
公開日期: | 20-三月-2017 |
摘要: | The feasibility of a single sideband (SSB) PAM4 intensity-modulation and directdetection (IM/DD) transmission based on a CMOS ADC and DAC is experimentally demonstrated in this work. To cost effectively build a >50 Gb/s system as well as to extend the transmission distance, a low cost EML and a passive optical filter are utilized to generate the SSB signal. However, the EML-induced chirp and dispersion-induced power fading limit the requirements of the SSB filter. To separate the effect of signal-signal beating interference, filters with different roll-off factors are employed to demonstrate the performance tolerance at different transmission distance. Moreover, a high resolution spectrum analysis is proposed to depict the system limitation. Experimental results show that a minimum roll-off factor of 7 dB/10GHz is required to achieve a 51.84Gb/s 40-km transmission with only linear feedforward equalization. (C) 2017 Optical Society of America |
URI: | http://dx.doi.org/10.1364/OE.25.005852 http://hdl.handle.net/11536/144919 |
ISSN: | 1094-4087 |
DOI: | 10.1364/OE.25.005852 |
期刊: | OPTICS EXPRESS |
Volume: | 25 |
Issue: | 6 |
起始頁: | 5852 |
結束頁: | 5860 |
顯示於類別: | 期刊論文 |