Title :
Nonuniform Optical Undersampling for High-Resolution Microwave Frequency Measurements
Author :
Reilly, Daniel R. ; Wang, Shawn X. ; Kanter, Gregory S.
Author_Institution :
NuCrypt, LLC, Evanston, IL, USA
fDate :
6/15/2012 12:00:00 AM
Abstract :
An optical analog-to-digital converter that uses pulses of multiple wavelengths to nonuniformly sample a microwave signal is used to determine an input microwave frequency to a high accuracy over a large frequency range. Measurement times of 4 μ s lead to frequency errors of ~300 Hz over a measurement range of 10-18 GHz. We also identify the frequency and magnitude of multiple microwave inputs. The simple configuration is robust and practical.
Keywords :
analogue-digital conversion; frequency measurement; measurement by laser beam; measurement errors; microwave photonics; frequency 10 GHz to 18 GHz; frequency errors; high-resolution microwave frequency measurements; measurement times; microwave signal; multiple wavelengths pulses; nonuniform optical undersampling; optical analog-to-digital converter; robust configuration; Adaptive optics; Frequency measurement; Masers; Microwave measurements; Optical pulses; Photonics; Analog-to-digital conversion; microwave photonics; photonic sampling; signal sampling;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2192102
