Article: Reports from Laval University describe recent advances in lightwave technology.

"We propose and experimentally demonstrate an arbitrary UWB pulse generator. The proposed technique is based on spectral pulse shaping and frequency-to-time conversion," investigators in Canada report.

"The reconfigurability of this technique comes from changing the apodizaton of a chirped fiber Bragg grating (FBG) using a series of heating elements (HE). By setting the appropriate temperature set to the HEs, any predesigned UWB waveforms can be generated with high precision. The effective isotropically radiated power (EIRP)-optimized and U. S. Federal Communications Commission (FCC)-optimized pulses as well as the traditional Gaussian monocycle and doublet UWB ...

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