Frequency-shifted solitons in a highly nonlinear photonic-crystal fiber (PCF) are shown to give rise to high-visibility interference fringes in PCF output spectra, indicating flat spectral phase profiles of individual solitons in the PCF output. This experimental finding, supported by numerical simulations, suggests a promising method of fiber-format pulse shaping and an attractive technology for few-cycle pulse synthesis through a coherent addition of frequency-shifted solitons generated in a highly nonlinear fiber.
© 2009 Optical Society of America
Original Manuscript: October 14, 2008
Manuscript Accepted: December 20, 2008
Published: February 19, 2009
A. A. Voronin, I. V. Fedotov, A. B. Fedotov, and A. M. Zheltikov, "Spectral interference of frequency-shifted solitons in a photonic-crystal fiber," Opt. Lett. 34, 569-571 (2009)