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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1996),
  • paper CMA1

Ultralong, high-capacity, multiwavelength transmission systems and networks

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Abstract

Since 1988 over 300,000 km of fiber-optic undersea cable has been installed worldwide, enough to encircle the world seven times. Over this period undersea systems have evolved through three generations of technology, with a fourth generation based on wavelength-division-multiplexing (WDM) on the horizon. The first generation systems were installed across the Atlantic and Pacific oceans in 1988-89 and operated at 280 Mbit/s per fiber pair. The transmission capacity of regenerated systems eventually increased to 2.5 Gbit/ s, and repeater spacing increased to over 100 km due mainly to using 1.55-μm single-frequency laser diodes instead of 1.3-μm multifrequency lasers. The third and current generation technology is based on the transmission of a single optical channel through repeaters that use Erbium-doped amplifier repeaters.

© 1996 Optical Society of America

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