By using the four-sideband theory, we analyze the gain spectrum in wideband two-pump fiber optical parametric amplifiers and predict gain ripples over the flat gain region. We derive an approximation of their pseudo-periods and discuss methods for reducing their amplitudes.
© 2008 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: May 21, 2008
Manuscript Accepted: August 6, 2008
Published: September 25, 2008
Armand Vedadi, Michel E. Marhic, Eric Lantz, Hervé Maillotte, and Thibaut Sylvestre, "Investigation of gain ripple in two-pump fiber optical parametric amplifiers," Opt. Lett. 33, 2203-2205 (2008)