Title

Linear Technique for Discrimination of Optically Coded Waveforms Using Optical Frequency Combs

Authors

Authors

S. P. Bhooplapur; F. J. Quinlan; M. Akbulut;P. J. Delfyett

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

IEEE Photonics Technol. Lett.

Keywords

Differential balanced photodetection; matched filtering; optical; frequency comb; semiconductor lasers; SEMICONDUCTOR-LASERS; INJECTION LOCKING; Engineering, Electrical & Electronic; Optics; Physics, Applied

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 similar to 25 mu W, 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.

Journal Title

Ieee Photonics Technology Letters

Volume

24

Issue/Number

19

Publication Date

1-1-2012

Document Type

Article

Language

English

First Page

1673

Last Page

1676

WOS Identifier

WOS:000310744600004

ISSN

1041-1135

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