Optical fiber for light amplifier
AssigneeSamsung Electronics Co., Ltd.
InventorsJong Heo, Yong-Beom Shin, Se-Ho Park, Sun-tae Jung, Hyoun-soo Kim
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Abstract
An optical fiber for use in a light amplifier. The optical fiber is formed by doping a gerrnanium-gallium-sulfur (Ge—Ga—S) glass containing less sulfur than a GeS2—Ga2S3 stoichiometric composition line with a rare earth element, and further contains 0.1˜10 atomic % of a halogen element base on the Ge—Ga—S glass. By using optical fiber, clustering of praseodymium (Pr+3) ions can be suppressed even when the concentration of added Pr+3 is high, thereby improving light amplification efficiency.
Claims21
An optical fiber for use in a light amplifier, which is formed by doping a germanium-gallium-sulfur (Ge—Ga—S) glass containing less sulfur than a GeS2—Ga2S3 stoichiometric composition line with a rare earth element or a transition metal, further comprising 0.1˜10 atomic % of a halogen element based on the Ge—Ga—S glass.
An optical glass, comprising:
- germanium, gallium and sulfur, the mole fraction of the sulfur being less than the stoichiometric mole fraction of sulfur in the corresponding mixture of germanium sulfide and gallium sulfide;
- and
- a halogen element.
A light amplifier, comprising:
- an optical fiber, said optical fiber being formed from an optical glass comprising:
- germanium, gallium and sulfur, the mole fraction of the sulfur being less than the stoichiometric mole fraction of sulfur in the corresponding mixture of germanium sulfide and gallium sulfide;
- a halogen element;
- and
- a first dopant which is a rare earth element or a transition metal.
Dependencies are inferred from the claim text.