Fiber optical amplifier

Details Fiber optical amplifier Fiber optical amplifier

1990-07-19

1992-06-23

Lee, John D.

Optical waveguides

Having particular optical characteristic modifying chemical...

Of waveguide core

385 27, 385123, 385128, G02B 616

Patent

active

051250667

ABSTRACT:
The invention relates to an optical fiber in which an optically functioning element is doped in at least the core, and the cladding is hermetically coated with carbon film and an optical fiber-type optically active device comprising: an optical fiber loop bundle constituted by a plurality of winds of an optical fiber hermetically coated with carbon and doped with an optionally functioning element; and beam introducing means for introducing a beam for pumping the optically functioning element into the optical fiber loop bundle.

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patent: 4693545 (1987-09-01), Henningsen et al.
patent: 4815079 (1989-03-01), Snitzer et al.
patent: 4847843 (1989-07-01), Byron et al.
patent: 4874222 (1989-10-01), Vacha et al.
patent: 4959837 (1990-09-01), Fevrier et al.
patent: 4963832 (1990-10-01), Desurvire et al.
patent: 4964694 (1990-10-01), Oohashi et al.
Shimada, "Impact of An Erbium Doped Optical Fiber Amplifier On A Light Communication System", pp. 75-82, Apr. 1989.
K. S. Kranz, et al., "Hermetically Coated Optical Fibers: Hydrogen Permeation and Fatique Properties", SPIE vol. 992 Fiber Optics Reliability: Benign and Adverse Environments II (1988), pp. 218-222.

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