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Optical Engineering

Modulation-format comparison experiments on an economic long-haul transmission link using standard single-mode fiber and all erbium-doped fiber amplifiers
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Paper Abstract

We systematically compare the transmission performance of three different modulation formats — return-to-zero (RZ), chirped RZ (CRZ), and vestigial sideband RZ — on an economically possible transmission link using standard single-mode fiber (SSMF) and all erbium-doped fiber amplifiers. This link is composed of wavelength-division multiplexed channels at 10 Gbit/s over 24×100-km amplifier spans without using new types of fibers or Raman amplifiers. The generation of each modulation format in the experiments is optimized for more reasonable comparison, and their optical characteristics are investigated by comparison with simulation results. Optimum input powers into SSMF and dispersion compensation fiber for each modulation format signal were explored, and their transmission performance was compared. In our cost-effective transmission link, the CRZ signal showed the lowest input power and best performance among all the formats investigated.

Paper Details

Date Published: 1 October 2006
PDF: 7 pages
Opt. Eng. 45(10) 105001 doi: 10.1117/1.2360915
Published in: Optical Engineering Volume 45, Issue 10
Show Author Affiliations
Bo-hun Choi, Gwangju Univ. (South Korea)
Yang Jing Wen, Institute for Infocomm Research (Singapore)
Chang-Bong Kim, Kongju National Univ. (South Korea)


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