Frequency modulated hybrid photonic crystal laser by thermal tuning.
Opt Express
; 27(8): 11312-11322, 2019 Apr 15.
Article
em En
| MEDLINE
| ID: mdl-31052977
ABSTRACT
We demonstrate frequency modulation (FM) in an external cavity (EC) III-V/silicon laser, comprising a reflective semiconductor optical amplifier (RSOA) and a silicon nitride (SiN) waveguide vertically coupled to a 2D silicon photonic crystal (PhC) cavity. The PhC cavity acts as a tunable narrowband reflector giving wavelength selectivity. The FM was achieved by thermo-optical modulation of the reflector via a p-n junction. Single-mode operation was ensured by the short cavity length, overlapping only one longitudinal laser mode with the reflector. We investigate the effect of reflector modulation theoretically and experimentally and predict a substantial tracking of the resonator by the laser frequency with very small intensity modulation (IM).
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01-internacional
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MEDLINE
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En
Ano de publicação:
2019
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Article