Open AccessSimplified flexible-PON upstream transmission using pulse position modulation at ONU and DSP-enabled soft-combining at OLT for adaptive link budgets
Author(s) -
Xiang Liu,
Frank Effenberger,
Naresh Chand
Publication year - 2015
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.23.006787
Subject(s) - optics , transmission (telecommunications) , passive optical network , modulation (music) , upstream (networking) , intensity modulation , pulse position modulation , digital signal processing , computer science , electronic engineering , pulse amplitude modulation , physics , pulse (music) , telecommunications , wavelength division multiplexing , phase modulation , engineering , computer hardware , detector , acoustics , wavelength , phase noise
We demonstrate a flexible modulation and detection scheme for upstream transmission in passive optical networks using pulse position modulation at optical network unit, facilitating burst-mode detection with automatic decision threshold tracking, and DSP-enabled soft-combining at optical line terminal. Adaptive receiver sensitivities of -33.1 dBm, -36.6 dBm and -38.3 dBm at a bit error ratio of 10(-4) are respectively achieved for 2.5 Gb/s, 1.25 Gb/s and 625 Mb/s after transmission over a 20-km standard single-mode fiber without any optical amplification.