Rare earth doped optical fiber

Details Rare earth doped optical fiber Rare earth doped optical fiber

1997-02-14

1998-08-25

Ngo, John

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

385142, G02B 622

Patent

active

057991251

ABSTRACT:
A rare earth doped optical fiber consisting of a first core doped with a rare earth element and having a relative index difference ranging from about 0.76% to about 1.5%, a second core surrounding the first core and having a relative index difference of about 1.8% or more, and a clad surrounding the second core. The refractive index of the first core is set smaller than the refractive index of the second core, and only the first core is doped with a rare earth element, thereby suppressing the influence of concentration quenching.

REFERENCES:
patent: 5096277 (1992-03-01), Kleineman
patent: 5363463 (1994-11-01), Kleinerman
patent: 5491581 (1996-02-01), Roba

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