Friday, July 27, 2007

Farewell!

Dear Colleagues and Friends!

So I am leaving the VUB. But before I go, let me prove to you that science and scientist ARE popular and at the same time that THE SIMPSONS are the most scientifically literate show on TV. Check it out. It has been proven by NATURE (Volume 448 Number 7152) in an article and their podcast.

Thanks to all of you who have made my stay pleasurable! And don't forget to have fun doing science!

Thursday, July 26, 2007

Intel announces the first 40Gbps Silicon Laser Modulator



As presented in their press release, Intel has shown the first 40Gbps silicon laser modulator, as a component for a Photonic Integrated Circuit (PIC) mainly focused to future optical interconnects.

This is a great leap forward, reaching the same capabilities as current standard optical modulators. Achiving a similar performance to normal photonic materials in silicon is very challenging, because crystalline silicon does not exhibit the linear electro-optic effect used to modulate light in standard photonic materials. Engineers are forced to rely on the free-carrier plasma dispersion effect, in which silicon’s refractive index is changed when the density of free carriers is varied, to modulate light in silicon. This new high speed modulator is based on a Mach-Zehnder interferometer with a reverse-biased pn junction in each of the arms, and by by modulating the phase difference between the interferometer’s two arms, they can modulate the intensity of the light transmitted through the interferometer.

Friday, July 13, 2007

One month and a half...

...of continuous gray weather and rain in Brussels. Sorry, but I just came from a week of holidays at home and I miss the sun.