科研之友
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摘要
In this letter, a new method for achieving ultra-flat supercontinuum generation is proposed. A picosecond fiber laser was used as the pump source, in a cascaded photonic crystal fiber, ultra-flat super continuum generation spectrum at 3 dB level from 1070 up to 1630 nm is obtained, to our knowledge, the 3 dB bandwidth of 560 nm is the most flat supercontinuum generation obtained in photonic crystal fibers, the results indicated that our method is efficient for achieving ultra-flat supercontinuum, which will promote the technical applications of supercontinuum.
