| 摘要 |
The present invention provides a power-equalizing multi-channel fiber laser array, which comprises a pumping laser source, a 1xN ratio splitter, a plurality of WDM couplers, some pieces of EDFs, some pieces of fiber grating pairs, and a power-equalizing device (which may include variable optical attenuators). The power-equalization approach is realized by: (1) adding in some variable optical attenuators; (2) controlling the pumping power ratio to the individual channels by a 1xN variable ratio splitter; (3) adjusting the fiber lengths or the Er3+ concentration; or (4) adjusting the fiber gratings reflectivity.
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