Importance

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Abstract

An optical amplification system includes: an optical mixer which combined first light, second light, third light, and fourth light, then branches the combined lights, and outputs first combined light, second combined light, third combined light, and fourth combined light; a first brancher that branches the first combined light and outputs first excitation light and second excitation light; a second brancher that branches the second combined light and outputs third excitation light and fourth excitation light; a third brancher that branches the third combined light and outputs fifth excitation light and sixth excitation light; and a fourth brancher that branches the fourth combined light and outputs seventh excitation light and eighth excitation light.

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First Claim