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/

Zendy Plus

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

Zendy Tools

Zendy Open

Instantaneous frequency measurement (IFM) of microwave signals is afundamental functionality for applications ranging from electronic warfare tobiomedical technology. Photonic techniques, and nonlinear optical interactionsin particular, have the potential to broaden the frequency measurement rangebeyond the limits of electronic IFM systems. The key lies in efficientlyharnessing optical mixing in an integrated nonlinear platform, with low losses.In this work, we exploit the low loss of a 35 cm long, thick silicon waveguide,to efficiently harness Kerr nonlinearity, and demonstrate the first on-chipfour-wave mixing (FWM) based IFM system. We achieve a large 40 GHz measurementbandwidth and record-low measurement error. Finally, we discuss the futureprospect of integrating the whole IFM system on a silicon chip to enable thefirst reconfigurable, broadband IFM receiver with low-latency.

Low-error and broadband microwave frequency measurement in a silicon chip