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22 February 2008Monolithic InP-based passively modelocked semiconductor ring lasers at 1.5 μm
In this paper an overview is given of the results we have obtained at the COBRA Research Institute in our work on
passively modelocked semiconductor lasers operating in the 1.5 μm wavelength region. Most results concern
modelocked ring lasers that are realized monolithically in the InP/InGaAsP materials system as well as simulations using
lumped element and traveling wave type models. The experimental results show that the ring lasers appear as the more
stable type of lasers. The modeling results show the importance of using a symmetrical configuration in the ring laser for
stable operation. Most recent results on linear modelocked quantum dot lasers at 1.5 μm indicate the improvements
possible using these materials.