The conditions leading to the recent observation of efficient upconversion of 1319-nm radiation to 580 nm in SiO2 single-mode fiber are examined. Simulation results, based on the third-order nonlinearity and the waveguiding characteristics of typical fiber, show that the visible signal may be generated by phase-matched four-wave mixing within the concurrently generated infrared spectral continuum.
© 1994 Optical Society of America
Robert Osborne, "Near-infrared continuum generation with upconversion into the visible in SiO2 single-mode fiber," Opt. Lett. 19, 1955-1957 (1994)