Abstract

The RZ-DPSK transmission format allows higher capacity and greater flexibility in system configurations when upgrading existing WDM systems. We report on using RZ-DPSK for upgrades of systems originally designed for RZ-OOK transponders. In this paper, we discuss the use of RZ-DPSK transponders on an installed trans-Pacific link and on the Sam-1 Cable System where the original transmission lengths were significantly increased. On the original SAm-1 Cable System, each digital line segment was less than 5000 km long. At the owners request these shorter sections were concatenated to make a 10,757-km commercial WDM 10 Gb/s fiber optic link, the longest in the world. Ten Gb/s transponders were successfully deployed onto the concatenated segments, and DPSK transponders will allow 480 Gb/s capacity.

© 2008 IEEE

Possible scenario for upgrading long-haul undersea optical fiber cable system using RZ-DPSK modulation format

Hidenori Taga
Opt. Express 16(15) 11393-11398 (2008)

A theoretical investigation of the long-haul RZ-DPSK system performance using DFF and NZDSF

Hidenori Taga
Opt. Express 17(8) 6032-6037 (2009)

Bit-rate dependent performance degradation of the long-haul RZ-DPSK system using block type dispersion map

Hidenori Taga
Opt. Express 17(17) 14511-14516 (2009)

Impact of dispersion map design upon transmission performance of long-haul RZ-DPSK system using dispersion flattened fiber

Hidenori Taga and Wei-Hung Chung
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Suppression of XPM and XPM-induced nonlinear phase noise for RZ-DPSK signals in 40 Gbit/s WDM transmission systems with optimum dispersion mapping

Xiaolin Li, Fan Zhang, Zhangyuan Chen, and Anshi Xu
Opt. Express 15(26) 18247-18252 (2007)