A clad mode stripper is provided on a passive double-clad fiber guiding amplified light signal downstream from a gain block. The present invention can utilize the resource more reasonably and fully. Active layer may be fully depleted.
Algorithmically generated prior art
A clad mode stripper is provided on a passive double-clad fiber guiding amplified light signal downstream from a gain block. The present invention can utilize the resource more reasonably and fully. Active layer may be fully depleted.