All-optical RF spectrum analyzer with a 5 THz bandwidth based on CMOS-compatible high-index doped silica waveguides

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

6 Scopus Citations
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Author(s)

  • Zhe KANG
  • Kun ZHU
  • Shiqi AI
  • Xiang WANG
  • Roy R. DAVIDSON
  • Yan WU
  • Roberto MORANDOTTI
  • Brent E. LITTLE
  • David J. MOSS

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)1574-1577
Journal / PublicationOptics Letters
Volume46
Issue number7
Online published19 Mar 2021
Publication statusPublished - 1 Apr 2021

Abstract

We report an all-optical radio-frequency (RF) spectrum analyzer with a bandwidth greater than 5 THz, based on a 50 cm long spiral waveguide in a CMOS-compatible high-index doped silica platform. By carefully mapping out the dispersion profile of the waveguides for different thicknesses, we identify the optimal design to achieve near-zero dispersion in the C-band. To demonstrate the capability of the RF spectrum analyzer, we measure the optical output of a femtosecond fiber laser with an ultrafast optical RF spectrum in the terahertz regime.

Citation Format(s)

All-optical RF spectrum analyzer with a 5 THz bandwidth based on CMOS-compatible high-index doped silica waveguides. / LI, Yuhua; KANG, Zhe; ZHU, Kun et al.
In: Optics Letters, Vol. 46, No. 7, 01.04.2021, p. 1574-1577.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review