1.3 micrometer-band amplifying optical fiber preform

Details 1.3 micrometer-band amplifying optical fiber preform 1.3 micrometer-band amplifying optical fiber preform

1993-01-19

1994-08-16

Robinson, Ellis P.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428378, 428379, 428380, 428384, 428392, 428428, 428432, 4285428, 359341, B32B 1702

Patent

active

053386078

ABSTRACT:
An optical fiber preform includes a core made from a fluoride glass which is doped with a rare earth, and a cladding surrounding the core. The cladding is made from one of an oxide glass and a fluoroxide glass. The core has a characteristic of amplification at 1.3 .mu.m-band. The cladding does not have absorption at 1.3 .mu.m-band. The preform is useful as a material for a fiber optical amplifier in optical communication systems.

REFERENCES:
patent: 4674835 (1987-06-01), Mimura
patent: 4874222 (1989-10-01), Vacha
patent: 4898777 (1990-02-01), Kindler
patent: 5062116 (1991-10-01), Christensen

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