| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7926486 | Optics Communications | 2018 | 6 Pages |
Abstract
We experimentally demonstrate cost effective symmetrical 112-Gbps long-reach passive optical network (LR-PON) over 70-km standard signal mode fiber (SSMF), based on pulse amplitude modulation (PAM)-4. Four 10G-class directly modulated lasers (DMLs) at C-band are used for achieving 4Ã28-Gbps downstream transmission, while two 18G-class DMLs at O-band are used to realize 2Ã56-Gbps upstream transmission, without any optical amplification in optical distributed network (ODN). Both dispersion compensation fiber (DCF) for downstream signal and praseodymium-doped fiber amplifier (PDFA) for upstream signal are equipped at optical line terminal (OLT). Meanwhile, sparse Volterra filter (SVF) equalizer is proposed to mitigate the transmission impairments with substantial reduction of computation complexity. Finally, we can successfully provide a loss budget of 33 dB per downstream wavelength channel, indicating of 64 optical network units (ONUs) with more than 1.25 Gbps per ONU.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Liyu Wu, Fan Gao, Minming Zhang, Songnian Fu, Lei Deng, Michael Choi, Donald Chang, Gordon K.P. Lei, Deming Liu,