| 摘要 |
A method and apparatus for high power, broad gain, high efficiency, low noise, cladding pumped fiber amplifiers and lasers is disclosed. The present invention allows a much higher pump light intensity in the inner cladding (14) of a double cladding fiber (6) to be achieved than is possible with conventionally pumped double cladding fiber amplifiers. The present invention utilizes a fiber taper (1) in which the inner cladding decreases from a wide (2) to narrow portion (4) with the fiber core (10) remaining the same diameter. <IMAGE> |
