Open AccessComparison of cost- and energy-efficient signal modulations for next generation passive optical networks
Author(s) -
Jinlong Wei,
Klaus Grobe,
Christian Sánchez,
Elias Giacoumidis,
Helmut Grießer
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.23.028271
Subject(s) - passive optical network , transceiver , transmission (telecommunications) , sensitivity (control systems) , modulation (music) , power budget , optics , electronic engineering , computer science , optical power , power (physics) , wavelength division multiplexing , telecommunications , wavelength , physics , laser , engineering , power control , quantum mechanics , acoustics , wireless
Extensive numerical investigations are undertaken to analyze and compare, for the first time, the performance, techno-economy, and power consumption of three-level electrical Duobinary, optical Duobinary, and PAM-4 modulation formats as candidates for high-speed next-generation PONs supporting downstream 40 Gb/s per wavelength signal transmission over standard SMFs in C-band. Optimization of transceiver bandwidths are undertaken to show the feasibility of utilizing low-cost and band-limited components to support next-generation PON transmissions. The effect of electro-absorption modulator chirp is examined for electrical Duobinary and PAM-4. Electrical Duobinary and optical Duobinary are power-efficient schemes for smaller transmission distances of 10 km SMFs and optical Duobinary offers the best receiver sensitivity albeit with a relatively high transceiver cost. PAM-4 shows the best power budget and cost-efficiency for larger distances of around 20 km, although it consumes more power. Electrical Duobinary shows the best trade-off between performance, cost and power dissipation.