We propose a multiple-grating fiber structure that decomposes an ultrashort broadband optical pulse simultaneously in both wavelength and time. As an initial demonstration, we used a transform-limited 1-ps Gaussian pulse centered at 1.55 mu;m as the ultrashort broadband input into a three-grating fiber structure and generated three output pulses separated in wavelength and time with good correlation between experimental results and simulations. This device structure can be used to generate a multiwavelength train of pulses for use in wavelength-division-multiplexed systems or to implement frequency-domain encoding of coherent pulses for optical code-division multiple access.
© 1997 Optical Society of America
Lawrence R. Chen, Seldon D. Benjamin, Peter W. E. Smith, John E. Sipe, and Salim Juma, "Ultrashort pulse propagation in multiple-grating fiber structures," Opt. Lett. 22, 402-404 (1997)