EXCITATION LIGHT DISTRIBUTION DEVICE, EXCITATION LIGHT DISTRIBUTION METHOD, OPTICAL AMPLIFICATION SYSTEM AND NODE DEVICE
First Claim
1. An excitation light distribution device comprising:
- an excitation light source output unit that outputs excitation light;
an optical branching unit with variable branching ratio that branches and outputs said excitation light; and
a control unit that controls, on the basis of information on an optical signal to be amplified by the excitation light outputted by said optical branching unit, at least either the branching ratio of said optical branching unit or the optical output power of said excitation light source output unit.
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Accused Products
Abstract
For the purpose of reducing the cost and power consumption of an optical amplification system provided with an optical amplifier, an excitation light distribution device of the present invention comprises an excitation light source output unit which outputs excitation light, an optical branching unit with variable branching ratio which branches and outputs the excitation light, and a control unit which, on the basis of information on an optical signal to be amplified by the excitation light outputted by the optical branching unit, controls at least either the branching ratio of the optical branching unit or the optical output power of the excitation light source output unit.
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Citations
10 Claims
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1. An excitation light distribution device comprising:
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an excitation light source output unit that outputs excitation light; an optical branching unit with variable branching ratio that branches and outputs said excitation light; and a control unit that controls, on the basis of information on an optical signal to be amplified by the excitation light outputted by said optical branching unit, at least either the branching ratio of said optical branching unit or the optical output power of said excitation light source output unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An excitation light distribution method which comprises:
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branching and outputting excitation light; and
,on the basis of information on an optical signal to be amplified by said branched and outputted excitation light, controlling at least either the branching ratio of said excitation light or the optical output power of said excitation light.
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Specification