US 2006/0078009 A1 · Optical fiber, optical fiber amplifier, and optical fiber laser light source

Abstract

An optical fiber can efficiently excite metallic ions by a pump lightwave, and an optical fiber amplifier and an optical fiber laser light source both incorporate the optical fiber. The optical fiber comprises (a) a solid region that has a first region doped with metallic ions and a second region surrounding the first region and that allows a lightwave for exciting the metallic ions to travel in a multiple mode and (b) a third region surrounding the second region and having a plurality of holes stretching along the length of the optical fiber. The optical fiber has a structure in which the first region is supplied with the power of a lightwave that is included in the pump lightwave and that is in a mode having no intensity peak at the center axis of the solid region.

Claims18

Dependent claims

An optical fiber comprising:

(a) a solid region that:
(a1) has a first region doped with at least one type of metallic ion and a second region surrounding the first region;
and
(a2) allows a pump lightwave including in its wavelength range a wavelength for exciting the at least one type of metallic ion to travel in a multiple mode;
and
(b) a third region that surrounds the second region and that is provided with a plurality of holes stretching along the length of the optical fiber;
the optical fiber being twisted.

4 more elements

Dependencies are inferred from the claim text.

Optical fiber, optical fiber amplifier, and optical fiber laser light source

Life of this patent

Optical fiber, optical fiber amplifier, and optical fiber laser light source

Life of this patent

Abstract

Claims18