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

M. Pagani, B. Morrison, Y. Zhang, A. Casas-Bedoya, T. Aalto, M. Harjanne, M. Kapulainen, B.J. Eggleton, D. Marpaung*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

54 Citations (Scopus)
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Abstract

Instantaneous frequency measurement (IFM) of microwave signals is a fundamental functionality for applications ranging from electronic warfare to biomedical technology. Photonic techniques, and nonlinear optical interactions in particular, have the potential to broaden the frequency measurement range beyond the limits of electronic IFM systems. The key lies in efficiently harnessing 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, to the best of our knowledge, the first on-chip four-wave mixing-based IFM system. We achieve a large, 40 GHz measurement bandwidth and a record-low measurement error. Finally, we discuss the future prospect of integrating the whole IFM system on a silicon chip to enable the first reconfigurable, broadband IFM receiver with low latency.
Original languageEnglish
Pages (from-to)751-756
JournalOptica
Volume2
Issue number8
DOIs
Publication statusPublished - 2015
Externally publishedYes

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