A fiber laser cavity that includes a laser gain medium for receiving an
optical input projection from a laser pump, wherein the laser cavity
further includes a normal dispersion fiber segment with a .beta.''>0
where .beta.'' representing a fiber dispersion, and an anomalous
dispersion fiber segment with the .beta.''<0 for generating a net
anomalous dispersion for balancing a self-phase modulation (SPM) and a
dispersion induced pulse broadening/compression in the fiber laser cavity
for generating an output laser with a transform-limited pulse shape
wherein the segment with the anomalous dispersion further includes a
Photonic Crystal (PC), a Photonic Bandgap (PBG) or a higher order mode
(HOM) fiber.