Version 1
: Received: 25 January 2021 / Approved: 26 January 2021 / Online: 26 January 2021 (09:57:01 CET)
How to cite:
Li, Y.; Kang, Z.; Zhu, K.; Ai, S.; Wang, X.; Davidson, R.; Yan Wu, Y.W.; Morandotti, R.; Little, B.; Moss, D.; Chu, S. All-Optical RF and Microwave Spectrum Analyzer with a 5 THz Bandwidth Based on CMOS-Compatible Waveguides. Preprints2021, 2021010529 (doi: 10.20944/preprints202101.0529.v1).
Li, Y.; Kang, Z.; Zhu, K.; Ai, S.; Wang, X.; Davidson, R.; Yan Wu, Y.W.; Morandotti, R.; Little, B.; Moss, D.; Chu, S. All-Optical RF and Microwave Spectrum Analyzer with a 5 THz Bandwidth Based on CMOS-Compatible Waveguides. Preprints 2021, 2021010529 (doi: 10.20944/preprints202101.0529.v1).
Cite as:
Li, Y.; Kang, Z.; Zhu, K.; Ai, S.; Wang, X.; Davidson, R.; Yan Wu, Y.W.; Morandotti, R.; Little, B.; Moss, D.; Chu, S. All-Optical RF and Microwave Spectrum Analyzer with a 5 THz Bandwidth Based on CMOS-Compatible Waveguides. Preprints2021, 2021010529 (doi: 10.20944/preprints202101.0529.v1).
Li, Y.; Kang, Z.; Zhu, K.; Ai, S.; Wang, X.; Davidson, R.; Yan Wu, Y.W.; Morandotti, R.; Little, B.; Moss, D.; Chu, S. All-Optical RF and Microwave Spectrum Analyzer with a 5 THz Bandwidth Based on CMOS-Compatible Waveguides. Preprints 2021, 2021010529 (doi: 10.20944/preprints202101.0529.v1).
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
radio frequency; microwave; spectrum analyzer; integrated; photonic
Subject
ENGINEERING, Automotive Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
