| 摘要 |
A method and apparatus for high power, broad gain, high efficiency, low noise, cladding pumped fiber amplifiers and lasers. The present invention allows a much higher pump light intensity in the inner cladding of a double cladding fiber to be achieved than is possible with conventionally pumped double cladding fiber amplifiers. The present invention utilizes a fiber taper in which the inner cladding decreases from a wide to narrow portion with the fiber core remaining the same diameter.
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