Narrow-linewidth widely tunable hybrid external cavity laser using Si3N4/SiO2 microring resonators

Abstract

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. 

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