Heterogeneous III-V on silicon nitride amplifiers and lasers via microtransfer printing

Thumbnail Image
optica-7-5-386.pdf(2.59 MB)
Published Version
Op de Beeck, Camiel
Haq, Bahawal
Elsinger, Lukas
Gocalińska, Agnieszka M.
Pelucchi, Emanuele
Corbett, Brian
Roelkens, Günther
Kuyken, Bart
Journal Title
Journal ISSN
Volume Title
Optica Publishing Group
Published Version
Research Projects
Organizational Units
Journal Issue
The development of ultralow-loss silicon-nitride-based waveguide platforms has enabled the realization of integrated optical filters with unprecedented performance. Such passive circuits, when combined with phase modulators and low-noise lasers, have the potential to improve the current state of the art of the most critical components in coherent communications, beam steering, and microwave photonics applications. However, the large refractive index difference between silicon nitride and common III-V gain materials in the telecom wavelength range hampers the integration of electrically pumped III-V semiconductor lasers on a silicon nitride waveguide chip. Here, we present an approach to overcome this refractive index mismatch by using an intermediate layer of hydrogenated amorphous silicon, followed by the microtransfer printing of a prefabricated III-V semiconductor optical amplifier. Following this approach, we demonstrate a heterogeneously integrated semiconductor optical amplifier on a silicon nitride waveguide circuit with up to 14 dB gain and a saturation power of 8 mW. We further demonstrate a heterogeneously integrated ring laser on a silicon nitride circuit operating around 1550 nm. This heterogeneous integration approach would not be limited to silicon-nitride-based platforms: it can be used advantageously for any waveguide platform with low-refractive-index waveguide materials such as lithium niobate.
Wave-guides , Integration , Platform , Chip , Fabry-Pérot lasers
Op de Beeck, C., Haq, B., Elsinger, L., Gocalinska, A., Pelucchi, E., Corbett, B., Roelkens, G. and Kuyken, B. (2020) 'Heterogeneous III-V on silicon nitride amplifiers and lasers via microtransfer printing', Optica, 7(5), pp. 386-393. doi: 10.1364/OPTICA.382989
© 2020, Optical Society of America under the terms of the OSA Open Access Publishing Agreement.