Wide-range, high-precision multiple microwave frequency measurement using a chip-based photonic Brillouin filter

H. Jiang, D. Marpaung*, M. Pagani, K. Vu, D.-Y. Choi, S.J. Madden, L. Yan, B.J. Eggleton

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

44 Citations (Scopus)

Abstract

Spectrum analysis is a key functionality in modern radio frequency (RF) systems. In particular, fast and accurate estimation of multiple unknown RF signal frequencies over a wide measurement range is crucial in defense applications. Although photonic techniques benefit from an enhanced frequency estimation range along with reduced size and weight relative to their RF counterparts, they have been limited by a fundamental trade-off between measurement range and accuracy. Here, we circumvent this trade-off by harnessing the photon and phonon interactions in a photonic chip through stimulated Brillouin scattering, resulting in an accurate estimation of multiple RFs of up to 38 GHz with a record-low error of 1 MHz.
Original languageEnglish
Pages (from-to)30-34
JournalOptica
Volume3
Issue number1
DOIs
Publication statusPublished - 2016
Externally publishedYes

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