Traditionally, reconfigurable optical pulse shaping is performed by using programmable spatial light modulators or tunable optical attenuators and phase shifters. We propose a technique to achieve tunability in the line-by-line pulse-shaping regime by controlling the offset frequency of an optical frequency comb. The method requires a high-spectral-resolution line-by-line shaper with channel spacing equal to a submultiple of the comb spacing. As a particular example, we numerically analyze tunable pulse-repetition-rate multiplication by grating-based line-by-line pulse shaping using a fixed phase-only mask.
© 2009 Optical Society of America
Original Manuscript: January 29, 2009
Revised Manuscript: May 19, 2009
Manuscript Accepted: May 26, 2009
Published: June 30, 2009
José Caraquitena and Javier Martí, "Dynamic spectral line-by-line pulse shaping by frequency comb shifting," Opt. Lett. 34, 2084-2086 (2009)