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Title: Development of erbium-doped optical fiber at Bell Laboratories

Abstract

In optical communication systems, hair-thin optical fiber is used as a light pipe to carry an optical signal from transmitter to receiver. The amount of light lost over the route is one of the major limiting factors in optical networks since it defines the spans between regenerators and the signal transmission rates. Until about 6 years ago, the signal was amplified periodically by converting it to an electronic signal, amplifying it and then injecting it back into the fiber using a laser. With the recently-developed technology of optical amplification, however, the signal may be amplified in a special active medium simply by supplying additional light at a different wavelength. This medium is a short length of optical fiber doped with erbium. Optical amplification allows deployment of systems that can be upgraded simply by changing the terminal equipment and has enabled development of new architectures. One of the first applications was transoceanic systems where expensive electronic regenerators were replaced by a chain of optical amplifiers. For terrestrial systems, every three existing regenerators may be replaced with a single optical amplifier. New terrestrial installations are being configured with 1000 km between regenerators, and continuing system experiments are pushing span distances even further.more » Development of optical amplifiers at Lucent Technologies has entailed understanding the optical properties of the amplifiers and the development of fabrication technology. This paper will discuss both aspects-of this key component.« less

Authors:
 [1]
  1. Lucent Technologies, Murray Hill, NJ (United States)
Publication Date:
OSTI Identifier:
567929
Report Number(s):
CONF-9604124-
TRN: 98:000247-0006
Resource Type:
Conference
Resource Relation:
Conference: 98. annual meeting of the American Ceramic Society, Indianapolis, IN (United States), 14-17 Apr 1996; Other Information: PBD: 1997; Related Information: Is Part Of Ceramic transactions: Case studies in ceramic product development, manufacturing, and commercialization. Volume 75; Ghosh, A.; Barks, R.E.; Hiremath, B. [eds.]; PB: 140 p.
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AMPLIFIERS; MANUFACTURING; OPTICAL PROPERTIES; OPTICAL FIBERS; ALUMINIUM OXIDES; GERMANIUM OXIDES; DOPED MATERIALS; FABRICATION

Citation Formats

DiGiovanni, D J. Development of erbium-doped optical fiber at Bell Laboratories. United States: N. p., 1997. Web.
DiGiovanni, D J. Development of erbium-doped optical fiber at Bell Laboratories. United States.
DiGiovanni, D J. 1997. "Development of erbium-doped optical fiber at Bell Laboratories". United States.
@article{osti_567929,
title = {Development of erbium-doped optical fiber at Bell Laboratories},
author = {DiGiovanni, D J},
abstractNote = {In optical communication systems, hair-thin optical fiber is used as a light pipe to carry an optical signal from transmitter to receiver. The amount of light lost over the route is one of the major limiting factors in optical networks since it defines the spans between regenerators and the signal transmission rates. Until about 6 years ago, the signal was amplified periodically by converting it to an electronic signal, amplifying it and then injecting it back into the fiber using a laser. With the recently-developed technology of optical amplification, however, the signal may be amplified in a special active medium simply by supplying additional light at a different wavelength. This medium is a short length of optical fiber doped with erbium. Optical amplification allows deployment of systems that can be upgraded simply by changing the terminal equipment and has enabled development of new architectures. One of the first applications was transoceanic systems where expensive electronic regenerators were replaced by a chain of optical amplifiers. For terrestrial systems, every three existing regenerators may be replaced with a single optical amplifier. New terrestrial installations are being configured with 1000 km between regenerators, and continuing system experiments are pushing span distances even further. Development of optical amplifiers at Lucent Technologies has entailed understanding the optical properties of the amplifiers and the development of fabrication technology. This paper will discuss both aspects-of this key component.},
doi = {},
url = {https://www.osti.gov/biblio/567929}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {12}
}

Conference:
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