English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Optical parametric amplification (OPA) represents a powerful solution toachieve broadband amplification in wavelength ranges beyond the scope ofconventional gain media, for generating high-power optical pulses, opticalmicrocombs, entangled photon pairs and a wide range of other applications.Here, we demonstrate optical parametric amplifiers based on silicon nitride(Si3N4) waveguides integrated with two-dimensional (2D) layered graphene oxide(GO) films. We achieve precise control over the thickness, length, and positionof the GO films using a transfer-free, layer-by-layer coating method combinedwith accurate window opening in the chip cladding using photolithography.Detailed OPA measurements with a pulsed pump for the fabricated devices withdifferent GO film thicknesses and lengths show a maximum parametric gain of~24.0 dB, representing a ~12.2 dB improvement relative to the device withoutGO. We perform a theoretical analysis of the device performance, achieving goodagreement with experiment and showing that there is substantial room forfurther improvement. This work represents the first demonstration ofintegrating 2D materials on chips to enhance the OPA performance, providing anew way of achieving high performance photonic integrated OPA by incorporating2D materials.

Waveguide optical parametric amplifiers in silicon nitride with 2D graphene oxide films