Title

Linear Technique For Discrimination Of Optically Coded Waveforms Using Optical Frequency Combs

Keywords

Differential balanced photodetection; Matched filtering; Optical frequency comb; Semiconductor lasers

Abstract

We have demonstrated a novel coherent optical detection architecture that serves as a matched filter and successfully discriminates between various encoded optical waveforms with high confidence. The waveforms are produced by encoding the spectral phase of an optical frequency comb with codes from a Walsh-Hadamard set. The encoded optical waveforms are decoded with a coherent detection technique implemented using an optical frequency comb as a set of local oscillators, an interferometer, and a pair of differential balanced photodetectors. The use of only linear optical devices in the receiver results in a higher sensitivity compared to the use of nonlinear optical thresholding and gating techniques. Decoding is demonstrated at power levels of ∼25 μW, which are much lower than previously reported. Possible applications of the receiver architecture include laser radar and optical communications in an optical code-division multiple access network. © 2012 IEEE.

Publication Date

9-24-2012

Publication Title

IEEE Photonics Technology Letters

Volume

24

Issue

19

Number of Pages

1673-1676

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/LPT.2012.2209637

Socpus ID

84866354326 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84866354326

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