Radio frequency spectrum analyzer with a 5 THz bandwidth based on nonlinear optics in a CMOS compatible high-index doped silica waveguide
Optics
2021-03-22 v1 Applied Physics
Abstract
We report an all-optical radio-frequency (RF) spectrum analyzer with a bandwidth greater than 5 terahertz (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.
Keywords
Cite
@article{arxiv.2103.10557,
title = {Radio frequency spectrum analyzer with a 5 THz bandwidth based on nonlinear optics in a CMOS compatible high-index doped silica waveguide},
author = {Yuhua Li and Zhe Kang and Kun Zhu and Shiqi Ai and Xiang Wang and Roy R. Davidson and Yan Wu and Roberto Morandotti and Brent E. Little and David J. Moss and Sai Tak Chu},
journal= {arXiv preprint arXiv:2103.10557},
year = {2021}
}
Comments
5 pages, 6 figures, 26 references