Optical amplifier, optical transmission equipment, optical transmission system, and method thereof
AssigneeHitachi, Ltd.
InventorsJunya Kosaka, Hiroyuki Nakano, Takayuki Suzuki
Life of this patent
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Abstract
An optical transmission equipment for use in an optical transmission system, having an optical amplifier (10A), comprising: a first optical doped fiber (1A); a second optical doped fiber (1B); a third optical doped fiber (1C); an optical isolator (6) of bringing loss in the optical signal, being provided between the first optical doped fiber and the second optical doped fiber; a dispersion compensator (7) being provided between the second optical doped fiber and the third optical doped fiber; and a pumping light source (2) being optically connected to so that the optical doped fibers (1A, 1B, 1C) are excited in common.
Claims13
An optical amplifier for use in an optical transmission equipment, comprising:
- a first optical doped fiber;
- a second optical doped fiber;
- a third optical doped fiber;
- a dispersion compensator provided between said second optical doped fiber and said third, second optical doped fibers;
- and
- a pumping light source being connected so that at least two of said first, second and third optical doped fibers are excited in common.
An optical amplifier for use in an optical transmission equipment, comprising:
- a first optical doped fiber;
- a second optical doped fiber;
- a third optical doped fiber;
- a dispersion compensator provided between said second optical doped fiber and said third second optical doped fiber;
- a pumping light source being connected so that at least two of said first, second and third optical doped fibers are excited in common;
- and
- an optical divider for dividing an excitation light output from said pumping light source into a first excitation light for exciting said first optical doped fiber and a second excitation light for exciting at least one of said second and third optical doped fibers.
An optical amplifier for use in an optical transmission equipment, comprising:
- a first optical doped fiber;
- a second optical doped fiber;
- a third optical doped fiber;
- a dispersion compensator provided between said second optical doped fiber and said third second optical doped fiber;
- a first pumping light source for outputting a first exciting light for exciting said first optical doped fiber;
- and
- a second pumping light source for outputting a second exciting light for exciting said second and third optical doped fibers in common.
Dependencies are inferred from the claim text.