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Authors: R. Laroy, G. Morthier, René Todt, Ralf Meyer, Markus-Christian Amann
Title: Progress on the development of a widely tunable TTG laser
Format: International Workshop
Publication date: 9/2003
Journal/Conference/Book: IST-NEWTON Workshop on tunable laser diodes
Location: Torino, Italy
Citations: Look up on Google Scholar


We present the progress that has been made within the IST-NEWTON project on the development of a widely tunable twin guide laser diode. Unlike other widely tunable laser diodes, the widely tunable TTG laser is a DFB laser. This implies a.o. that the reflection spectra of sampled or super structure gratings can be modified by the presence of gain. Moreover, the TTG laser has a far more complex cross-sectional structure than conventional tunable DBR laser diodes. Problems may occur due to undesired leakage or blocking and different epitaxy steps are required. As a result there are several design and fabrication issues that are particular for this type of laser diode. These issues will be addressed in the presentation and an overview will be given of the progress that has been made in the development of widely tunable TTG laser diodes.

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