Optically amplifying fiber and optical fiber amplifier

Details Optically amplifying fiber and optical fiber amplifier Optically amplifying fiber and optical fiber amplifier

1998-03-13

1999-10-19

Sanghavi, Hemang

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

385128, 359341, 372 6, G02B 602, G02B 2730

Patent

active

059701986

ABSTRACT:
An optical amplifying fiber including a center core region doped with erbium, aluminum, and phosphor, and a ring region doped with erbium and aluminum, the ring region being radially spaced a given distance from the center core region.

REFERENCES:
patent: 5058976 (1991-10-01), DiGiovanni et al.
patent: 5364429 (1994-11-01), Le Sergent
patent: 5365388 (1994-11-01), Takeda et al.
patent: 5640269 (1997-06-01), Shigematsu et al.
S. Inagaki, et al., "Novel Ring-Doped Erbium Doped Fiber with Wide Dynamic Range for Optical Amplifier in 2-Wavelength WDM Systems", 4 pgs., no publication date available.
M. Kakui, et al, "Development of Hybrid EDFAs for WDM Optical Transmission"; The Institute of Electronics, pp. 45-50, Jun. 1996.

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