Silicon-rich nitride waveguides for ultra-broadband nonlinear signal processing
Journal article, 2017

Silicon nitride (SixNy) waveguides constitute a technology platform to realize optical signal processing based on the nonlinear Kerr effect. Varying the stoichiometry of the core (i. e., x and y in silicon nitride) provides an additional degree of freedom for engineering the waveguide properties, such as nonlinear Kerr parameter and dispersion. We demonstrate low-stress high-confinement silicon-rich nitride waveguides with flat and anomalous dispersion over the entire C and L optical wavelength transmission bands for optical signal processing based on cross-phase modulation. The waveguides do not show any nonlinear loss for a measured optical input intensity of up to 1.5 x 109 W/cm(2). In particular, we achieve wavelength conversion of 10 Gb/s signals across the C band; XPM broadening is also observed in the O band. In addition, we highlight the use of SixNy waveguides for nonlinear microwave photonics. Specifically, we demonstrate radio-frequency spectral monitoring of optical signals with a bandwidth of hundreds of gigahertz.

Fiber

Nanowire

Cross-Phase Modulation

640 GB/S

Amplifier

Optical Wavelength Conversion

Photonics

Spectrum Analyzer

Radiofrequency

Nanowaveguides

Author

Mohammad Rezagholipour Dizaji

McGill University

Clemens Krückel

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Attila Fülöp

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Peter Andrekson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Victor Torres Company

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

L. R. Chen

McGill University

Optics Express

1094-4087 (ISSN) 10944087 (eISSN)

Vol. 25 11 12100-12108

Subject Categories

Telecommunications

Atom and Molecular Physics and Optics

DOI

10.1364/OE.25.012100

More information

Latest update

10/25/2022