Open AccessCompressive multi-heterodyne optical spectroscopy
Author(s) -
Nikhil Mehta,
Jingbiao Chen,
Zhigang Zhang,
Zhiwen Liu
Publication year - 2012
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.028363
Subject(s) - optics , heterodyne (poetry) , spectroscopy , heterodyne detection , bandwidth (computing) , compressed sensing , terahertz radiation , materials science , physics , computer science , telecommunications , laser , acoustics , algorithm , quantum mechanics
We propose a framework for Compressive Multi-heterodyne Optical Spectroscopy [CMOS], based on multiple heterodyne measurements of an optical signal mixed with a dynamically encoded frequency comb. The sparsity of optical spectra of interest is exploited by using the compressive sensing strategy to significantly reduce the number of heterodyne measurements. Numerical results are presented to demonstrate retrieval of coherent and incoherent hypothetical singly resonant sparse spectra over a 2 THz-wide bandwidth, sampled every 100 MHz, by using less than 50% measurements.