@article{MBW:06,
	author={B. Muralidharan and V. Balakrishnan and A. Weiner},
	title={Design of Double-Passed Arrayed Waveguide
Gratings for Generation of Flat Topped
Femtosecond Pulse trains},
  journal = {IEEE Transactions on Lightwave Technology},
  volume = 24,
  number = 1,
  pages = {586-597},
  month = jan,
  year= 2006
}