Silicate waveguide compositions for extended L-band and S-band amplification
Assignee3M Innovative Properties Company
InventorsMark T. Anderson, Craig R. Schardt, James R. Onstott, Kenton D. Budd
Life of this patent
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Abstract
An optical waveguide including a core having silica, Al, a non-fluorescent rare-earth ion, Ge, Er, and Tm. The non-fluorescent rare-earth ion may be La. Exemplary compositions concentrations are Er is from 15 ppm to 3000 ppm, Al is from 0.5 mol % to 12 mol %, La is less than or equal to 2 mol %, Tm is from 15 ppm to 10,000 ppm; and the Ge is less than or equal to 15 mol %. The core may further include F. An exemplary concentration of F is less than or equal to 6 anion mol %.
Claims52
An optical waveguide, comprising:
- a) a core;
- b) a cladding surrounding the core, the cladding comprising a material having a lower refractive index than the core;
- and
- c) wherein the core comprises silica, Al, a non-fluorescent rare-earth ion, Ge, Er, and Tm.
An optical fiber, comprising:
- a) a core, wherein the core comprises a silicate glass core material doped with aluminum, lanthanum, germanium, erbium and thulium dopants;
- b) wherein the concentration of erbium is from 150 ppm to 1500 ppm;
- c) the concentration of aluminum is from 4 mol % to 10 mol %;
- d) the concentration of lanthanum is less than or equal to 2 mol %;
- e) the concentration of thulium is from 150 ppm to 3000 ppm;
- and
- f) the concentration of germanium is less than or equal to 15 mol %.
An optical waveguide comprising:
- a) a light-guiding core;
- b) the core comprising silica, aluminum, lanthanum, germanium, erbium, and thulium
- c) wherein the intensity of the spontaneous emission at 1600 nm is no less than −8.8 dB relative to the maximum emission intensity at ˜1.53 μm and wherein the intensity of the spontaneous emission at 1650 nm is no less than −14.4 dB relative to the maximum emission intensity at ˜1.53 μm.
A waveguide glass comprising silica, aluminum, a nonfluorescent rare-earth ion, germanium, erbium and thulium.
An optical waveguide, comprising:
- a) a core;
- b) a cladding surrounding the core, the cladding comprising a material having a lower refractive index than the core;
- and
- c) wherein the core comprises silica, Al, La, Ge, Er, and Tm.
A waveguide glass comprising silica, aluminum, a nonfluorescent rare-earth ion chosen from the group consisting of La, Y, Lu, and Sc, and germanium, erbium and thulium.
Dependencies are inferred from the claim text.