Bit- and Power-Loading—A Comparative Study on Maximizing the Capacity of RSOA Based Colorless DMT Transmitters

Applied Sciences

David Hillerkuss¹  Simon Arega Gebrewold¹  Juerg Leuthold¹  Romain Bonjour¹  Romain Brenot² 

[1] Institute of Electromagnetic Fields (IEF), ETH Zurich, 8092 Zurich, Switzerland;Thales Research and Technology and CEA Leti, Route de Nozay, a Joint Lab of Alcatel-Lucent Bell Labs France, III-V Lab, 91460 Marcoussis, France;

关键词: bit- and power-loading;    colorless transmitter;    discrete multi-tone (DMT);    reflective semiconductor optical amplifier (RSOA);    WDM-PON;   

DOI  :  10.3390/app7100999

来源: DOAJ

【 摘 要 】

We present a comparative study of the capacity increase brought by bit- and power-loading discrete multi-tone (DMT) modulation for low-cost colorless transmitters. Three interesting reflective semiconductor optical amplifier (RSOA) based colorless transmitter configurations are compared: First, an amplified spontaneous emission (ASE) spectrum-sliced source; second, a self-seeded RSOA fiber cavity laser (FCL) and third, an externally seeded RSOA. With bit- and power-loaded DMT, we report record high line rates of 6.25, 20.1 and 30.7 Gbit/s and line rates of 4.17, 10.1 and 24.5 Gbit/s in a back-to-back and in a 25 km nonzero dispersion shifted fiber (NZDSF) transmission experiments for the three transmitter configurations, respectively. In all the experiments, BER (bit error ratios) below an FEC (forward error correction) limit of 7.5 × 10−3 were achieved.

【 授权许可】

Unknown