%0 Journal Article %A Monteagudo Lerma, Laura %A Valdueza Felip, Sirona %A Naranjo Vega, Fernando Bernabé %A Corredera, Pedro %A Rapenne, L. %A Sarigiannidou, E. %A Strasser, G. %A Monroy, Eva %A González Herráez, Miguel %T Waveguide saturable absorbers at 1.55 μm based on intraband transitions in GaN/AlN QDs %D 2013 %U http://hdl.handle.net/10017/24977 %X We report on the design, fabrication and optical characterization of GaN/AlN quantum-dot-based waveguides for all-optical switching via intraband absorption saturation at 1.55 µm. The transmittance of the TM-polarized light increases with the incident optical power due to the saturation of the s-pz intraband absorption in the QDs. Single-mode waveguides with a ridge width of 2 µm and a length of 1.5 mm display 10 dB absorption saturation of the TM-polarized light for an input pulse energy of 8 pJ and 150 fs. %K Ciencias tecnológicas %K Electrónica %K Technology %K Electronics %~ Biblioteca Universidad de Alcala