G - Physics – 06 – E
Patent
G - Physics
06
E
G06E 3/00 (2006.01) G02F 2/02 (2006.01)
Patent
CA 2136960
2136960 9325934 PCTABS00028 The object of the invention is to provide a method which makes it possible to determine the correlation between two optical signals, which makes it possible to correlate two optical signals, without using a crystal element which is associated with a plurality of drawbacks, because the components are quite expensive. It has been found possible to replace a frequency doubling crystal by an active, optical wave guide, e.g. in the form of an active, optical fibre, said wave guide transmitting fluorescence which is intensity-related to the arrived signal. When this fluorescence is detected in spectral bands, e.g. in the blue region of the visible light, an image of the strength of the arriving signal may be formed. Current distance delaying of the two correlated signals makes it possible to produce an image of the correlation between the signals.
Mark Jannik
Thogersen Jan
Kirby Eades Gale Baker
Lycom A/s
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