Klaus J. Boller

Single Si 3 N 4 micro ring resonator as integrated wavelength meter with long-term reproducibility

Wavelength meters are central for many applications such as in telecommunication systems [1] or laser monitoring [2]. The primary function of a wavelength meter is to provide an output signal that changes sensitively with the wavelength of the input light. Of central importance is the reproducibility of the output signal over long time intervals during which external perturbations might negatively affect the reproducibility of the displayed wavelengths.

Narrow-linewidth widely tunable hybrid external cavity laser using Si 3 N 4 /SiO2 microring resonators

We report on the characteristics of a tunable hybrid external cavity laser using silicon nitride microring resonators. A wavelength tuning range covering from 1530nm to 1580nm is demonstrated with a side mode suppression ratio larger than 45dB. Typical linewidth values are 65kHz.