Optical fiber for optical amplifier
AssigneeSamsung Electronics Co., Ltd.
InventorsJong Heo, Yong-Beom Shin, Sun-Tae Jung, Hyoun-Soo Kim
Life of this patent
Estimating the term…
Abstract
An optical fiber for an optical amplifier, which contains dysprosium ion (Dy3+) with an improved light amplification efficiency at the 1.31 μm band. The optical fiber includes a germanium-gallium-sulfide (Ge—Ga—S) glass, an alkali metal halide, and Dy as a rare earth element. In the optical fiber, the interaction of electrons of Dy3+ and phonons in the glass lattice can be minimized, so that the multiphonon relaxation of Dy3+0 from 4F11/2 and 6H9/2 to 6H11/2 is slowed down, and thus the fluorescence lifetime at 1.31 μm is elongated, further improving the fluorescence efficiency of the optical fiber.
Claims20
An optical fiber for an optical amplifier, comprising a glass comprising germanium-gallium-sulfide (Ge—Ga—S), an alkali metal halide, and dysprosium (Dy) as a rare earth element, wherein a mol % of alkali metal halide content is greater than a mol % of Ga content.
An optical fiber for an optical amplifier, comprising a germanium-gallium-arsenic-sulfide (Ge—Ga—As—S) glass, an alkali metal halide content, and dysprosium (Dy) as a rare earth element, formed by fusing at a temperature higher than 900 degrees Celsius and less than or equal to 1100 degrees Celsius.
A method for making an optical fiber, comprising the steps of:
- mixing Ge, Ga, S, and Dy2S3 with an alkali metal halide content;
- fusing the mixture in a furnace at a temperature higher than 900 degrees Celsius and less than or equal to 1100 degrees Celsius;
- quenching the above heated mixture;
- reheating the mixture to 300 to 400 degrees Celsius;
- and
- drawing an optical fiber from said mixture as said mixture is cooled below 300 to 400 degrees Celsius.
The method of claim wherein 14, said Dy2S3 is decomposed during said fusing step allowing Dy3+ ions to be distributed throughout said optical fiber.
Dependencies are inferred from the claim text.