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Optical Correlation Using Four Wave Mixing in a Highly Nonlinear Fibre for Real-Time Serialized Ultrafast Systems

Shalihah F., Mitchell A., Bui L.

International Journal of Electronics and Telecommunications

2013

Vol. 59, No. 3

207-212

A method of all-optical correlation is proposed using the nonlinear phenomena Four Wave Mixing (FWM) of two different signals. The method shows a serial solution where correlation of an ultrafast real-time serialized broadband source is demonstrated using a Highly Non-Linear Fibre (HNLF) with correlation rate reaching 200MHz.

Correlation in analysis of composite input scence

Kasztelanic R.

Opto-Electronics Review

2001

Vol. 9, No. 3

341-343

The present article is an attempt to answert the question whether it is possible to use optical correlation for analysis of a composite input scence. There are two possible approaches to traditional optical correlation setups with a thin hologram used for recognising objects in the input scence. In the first case, one input scence object out of several others is recognised. In the second case, only one object is searched for among numerous other objects in an input scene. This paper presents a suggestion on how to increase the range of traditional optical correlation systems with a thin hologram for analysis of a composite input scence.