This invention relates to a pattern recognition correlator and method for correlating input data with one or more reference data sets. The input data, which may be for instance digital amplitude modulated optical data, is used to modulate an optical signal to form a phase modulated optical signal. This temporal phase modulated optical signal is then converted into a parallel optical phase signal, preferably through use of an optical delay, and modulated by an optical phase modulator. When there is a correlation between the input data and the reference data the emerging wavefront is plane and can be strongly coupled to a detector. In the absence of correlation the emergent wavefront is not plane and so is not coupled as strongly to the detector. The detector output can therefore be used as an indication of correlation.
申请公布号
WO2006043057(A2)
申请公布日期
2006.04.27
申请号
WO2005GB04028
申请日期
2005.10.18
申请人
QINETIQ LIMITED;WILSON, REBECCA, ANNE;LEWIS, MEIRION, FRANCIS;LEWIN, ANDREW, CHARLES
发明人
WILSON, REBECCA, ANNE;LEWIS, MEIRION, FRANCIS;LEWIN, ANDREW, CHARLES