Rabus, D.G.D.G.RabusHamacher, M.M.HamacherTroppenz, U.U.TroppenzHeidrich, H.H.Heidrich2022-03-032022-03-032002https://publica.fraunhofer.de/handle/publica/20202110.1109/LPT.2002.802375The filter response of single-ring resonators with integrated semiconductor optical amplifiers based on GaInAsP-InP is presented. The devices with free spectral ranges of 25 and 50 GHz have the form of a racetrack. An on-off ratio of 20 dB, a full-width at half-maximum of 12 and 24 pm, a finesse of 17, and a Q factor of 130,000 and 65,000, respectively, have been achieved. The tuning to a specific wavelength is performed by using integrated Pt-resistors.engallium arsenideiii-v semiconductorsindium compoundsintegrated opticslaser tuningoptical communication equipmentoptical filtersoptical tuningq-factorquantum well lasersring laserssemiconductor optical amplifierswavelength division multiplexinghigh-q channel-dropping filtersring resonatorsintegrated soafilter responsesingle-ring resonatorsintegrated semiconductor optical amplifiersfree spectral rangesracetrackon-off ratiofull-width at half-maximumfinessespecific wavelength tuningintegrated pt-resistorsdwdmadd/drop filterGaInAsP-InPpt621535journal article