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High-Q channel-dropping filters using ring resonators with integrated SOAs

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4 Author(s)
Rabus, D.G. ; Heinrich-Hertz-Inst. fur Nachrichtentech. Berlin GmbH, Germany ; Hamacher, M. ; Troppenz, U. ; Heidrich, H.

The 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.

Published in:

Photonics Technology Letters, IEEE  (Volume:14 ,  Issue: 10 )