METHOD FOR CHANGING OPTICAL SPECTRUM, AND APPARATUS FOR GENERATING LIGHT WITH CHANGED SPECTRUM

摘要

This invention provides a method for changing a spectrum of optical pulses which can realize energy conversion in a C band with high efficiency with a nonquartz-type nonlinear optical fiber. The method comprises introducing optical pulses into one end of a nonlinear optical fiber and generating light with changed waveforms from the other end of the nonlinear optical fiber. The nonlinear optical fiber is formed of glass containing not less than 40% by mole of Bi₂O₃, and the group velocity dispersion is not more than -10ps/nm/km. There is also provided an apparatus for generating light with a changed spectrum, wherein optical pulses are introduced into one end of a nonlinear optical fiber and light with a changed spectrum are generated from the other end of the nonlinear optical fiber, the nonlinear optical fiber is formed of glass containing not less than 40% by mole of Bi₂O₃, and the group velocity dispersion is not more than -10ps/nm/km.