Optical amplifier incorporating therein holmium-doped optical fiber
AssigneeElectronics and Telecommunications Research Institute
InventorsYong-Gyu Choi, Bong-Je Park, Kyong-Hon Kim
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Abstract
An optical amplifier of the present invention includes a pump source for generating a pumping light, a wavelength division multiplexing (WDM) coupler for multiplexing an inputted optical signal and the pumping light and an optical fiber including a core and a clad, wherein the core has holmium ions less than 0.5 mole % and the clad has ions selected from the group consisting of transition metal ions, rare earth ions and a combination thereof. In addition, the phonon energy of a host material is less than 600 cm−1 and an absorption band at short-wavelength side is shorter than 530 nm.
Claims17
An optical fiber composition, wherein a representative phonon energy of a host material is less than 600 cm− and an absorption band at short-wavelength side is less than 530 nm, the optical fiber composition comprising:
- a core including holmium ions less than 0.5 mole %;
- and
- a clad including ions selected from the group consisting of transition metal ions, rare earth ions and a combination thereof.
An optical fiber, wherein a representative phonon energy of a host material is less than 600 cm−1 and an absorption band at short-wavelength side is less than 530 nm, the optical fiber comprising:
- a core including holmium ions less than 0.5 mole %;
- and
- a clad including ions selected from the group consisting of transition metal ions, rare earth ions and a combination thereof.
An optical amplifier for amplifying an optical signal, comprising:
- a pump source for generating a pumping light;
- a wavelength division multiplexing (WDM) coupler for multiplexing an inputted optical signal and the pumping light;
- and
- an optical fiber including a core and a clad, wherein the core has holmium ions less than 0.5 mole % and the clad has ions selected from the group consisting of transition metal ions, rare earth ions and a combination thereof,
- wherein the phonon energy of a host material is less than 600 cm−1 and an absorption band at short-wavelength side is shorter than 530 nm.
Dependencies are inferred from the claim text.