Open AccessFast ultra-wideband microwave spectral scanning utilizing photonic wavelength- and time-division multiplexing
Author(s) -
Yihan Li,
Naoya Kuse,
M. E. Fermann
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.018863
Subject(s) - optics , wideband , microwave , bandwidth (computing) , wavelength division multiplexing , multiplexing , materials science , photonics , wavelength , physics , computer science , telecommunications
A high-speed ultra-wideband microwave spectral scanning system is proposed and experimentally demonstrated. Utilizing coherent dual electro-optical frequency combs and a recirculating optical frequency shifter, the proposed system realizes wavelength- and time-division multiplexing at the same time, offering flexibility between scan speed and size, weight and power requirements (SWaP). High-speed spectral scanning spanning from ~1 to 8 GHz with ~1.2 MHz spectral resolution is achieved experimentally within 14 µs. The system can be easily scaled to higher bandwidth coverage, faster scanning speed or finer spectral resolution with suitable hardware.