Open AccessAn experimental demonstration for carrier reused bidirectional PON system with adaptive modulation DDO-OFDM downstream and QPSK upstream signals
Author(s) -
Jhih-Heng Yan,
YouWei Chen,
Kuan-Heng Shen,
Kai-Ming Feng
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.028154
Subject(s) - passive optical network , phase shift keying , upstream (networking) , orthogonal frequency division multiplexing , downstream (manufacturing) , optical carrier transmission rates , modulation (music) , electronic engineering , optics , physics , computer science , bit error rate , wavelength division multiplexing , telecommunications , optical fiber , engineering , channel (broadcasting) , radio over fiber , wavelength , operations management , acoustics
A light source centralized bidirectional passive optical network (PON) system based on multiband direct-detection optical orthogonal frequency division multiplexing (DDO-OFDM) downstream and quadrature phase-shift keying (QPSK) upstream is experimentally demonstrated. By introducing a simple optical single-side band (SSB) filter at the optical network unit (ONU), all the desired signal bands will be immune from the deleterious signal-signal beating interference (SSBI) noise with only single-end direct-detection scheme. An adaptive modulation configuration is employed to enhance the entire downstream throughput which results in a 150-Gbps downstream data rate with a single optical carrier. In the upstream direction, by recycling the clean downstream optical carrier, a 12.5 Gb/s QPSK format with coherent receiving mechanism in central office is adopted for better receiving sensitivity and dispersion tolerance. With the power enhancement by the long-reach PON architecture, the downstream splitting ratio can achieve as high as 1:1024.