Integrated closed-loop cavity of a tunable laser
|Journal / Publication||Applied Physics Letters|
|Publication status||Published - 10 Oct 2016|
|Link to Scopus||https://www.scopus.com/record/display.uri?eid=2-s2.0-84991383680&origin=recordpage|
In this paper, a closed-loop cavity of a tunable laser integrated onto a silicon chip is demonstrated. The closed-loop cavity consists of a semiconductor optical amplifier chip, two separated micro-ring resonators, and a U-shaped waveguide sub-loop, enabling dominating lasing in the counterclockwise direction. The lasing wavelength is tuned by varying the effective refractive index of the thermal ring-resonators. It has achieved wide tuning range (55.4 nm), high spectral purity (50-dB side mode suppression ratio), ∼1-mW output power, and 36-dB counter-propagation power suppression ratio. The integrated tunable laser has high potential in applications such as optical network, optical sensing, and integrated optoelectronic systems.
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Applied Physics Letters, Vol. 109, No. 15, 151105, 10.10.2016.
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review