标题: | Using adaptive four-band OFDM modulation with 40 Gb/s downstream and 10 Gb/s upstream signals for next generation long-reach PON |
作者: | Yeh, C. H. Chow, C. W. Chen, H. Y. Chen, B. W. 光电工程学系 Department of Photonics |
公开日期: | 19-十二月-2011 |
摘要: | In this demonstration, we propose and demonstrate an adaptive long-reach passive optical network (LR-PON) using four-band orthogonal frequency division multiplexed (OFDM) channels. The downstream traffic rates from 6.25 to 40 Gb/s (using fixed quadrature amplitude modulation (QAM) level in the four OFDM bands) and from 9.37 to 40.3 Gb/s (using variable QAM levels in the four OFDM bands) can be achieved adaptively in the optical network units (ONUs) depending on different fiber transmission lengths from 0 to 100 km. For the upstream transmission, a 10 Gb/s 16-QAM OFDM signal with pre-emphasis is experimentally performed by using a 2.5 GHz directly modulated laser (DML). Based on the simulation and experimental results, the proposed adaptive four-band OFDM system could be a promising candidate for the future LR-PON. (C)2011 Optical Society of America |
URI: | http://hdl.handle.net/11536/15716 |
ISSN: | 1094-4087 |
期刊: | OPTICS EXPRESS |
Volume: | 19 |
Issue: | 27 |
起始页: | 26150 |
结束页: | 26160 |
显示于类别: | Articles |
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