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Optica Publishing Group
  • Conference on Optical Fiber Communication/International Conference on Integrated Optics and Optical Fiber Communication
  • 1993 OSA Technical Digest Series (Optica Publishing Group, 1993),
  • paper WI10
  • https://doi.org/10.1364/OFC.1993.WI10

Transparent optical bus using a chain of remotely pumped erbium-doped-fiber amplifiers

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Abstract

LD-pumped optical amplifiers are key components in fiber networks. In a practical application, such as a fiber bus, the number of required amplifiers should be minimized for cost-effectiveness, since the cost is dominated by that of the pump LD’s. We propose a transparent fiber bus scheme in which all the optical amplifiers are remotely pumped by a single pump LD. The bus consists of conventional single-mode fiber and passive directional couplers, with erbium-doped fibers (EDF’s) spliced between them for loss compensation. The 1.48-µm pump wavelength is best suited for a chain of remotely pumped EDFA’s because of the low fiber loss near this wavelength. The concept was demonstrated in a four-station bus in which periodic gain maintains constant received signal power at each station. An accurate model made it possible to predict the EDF length required for each bus segment.

© 1993 Optical Society of America

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