Open Access125 Gbit/s discretely tunable InP-on-silicon filtered feedback laser with sub-nanosecond wavelength switching times
Author(s) -
Sören Dhoore,
Abdul Rahim,
Günther Roelkens,
Geert Morthier
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.008059
Subject(s) - materials science , optics , laser , arrayed waveguide grating , wavelength , optoelectronics , nanosecond , modulation (music) , distributed feedback laser , optical switch , optical amplifier , waveguide , diffraction grating , semiconductor laser theory , tunable laser , channel spacing , wavelength division multiplexing , semiconductor , physics , acoustics
A heterogeneously integrated InP-on-silicon fast tunable filtered feedback laser is demonstrated. The laser device consists of a main Fabry-Pérot cavity connected to an integrated arrayed waveguide grating of which the outputs form external cavities in which semiconductor optical amplifiers can be switched to provide single-mode operation and tunability. The laser can operate at four different wavelengths whereby switching between each wavelength channel is done within one nanosecond. For each wavelength channel 12.5 Gbit/s NRZ-OOK direct modulation is demonstrated. The combination of fast wavelength switching with straightforward wavelength control and high-speed direct modulation characteristics make the demonstrated laser structure very attractive for use in optical packet or burst switching systems.