Method and a device for correlating two or more optical pulse si

Details Method and a device for correlating two or more optical pulse si Method and a device for correlating two or more optical pulse si

1995-02-01

1996-04-30

Lee, John D.

Optical waveguides

Optical waveguide sensor

25022714, 2504844, 250550, 356345, 385142, G01J 1100

Patent

active

055132847

ABSTRACT:
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 fiber, 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.

REFERENCES:
patent: 4216474 (1980-08-01), Levine
patent: 4725728 (1988-02-01), Brininstool et al.
Osterberg, Ulf, et al. "Autocorrelation of Short Pulses . . ." IEEE Journal of Quantum Electronics, vol. 24, No. 10 (10 Oct. 1988), pp. 2127-2129.
Simon, Peter, et al. "A single-shot autocorrelator for UV . . ." Measurement Science & Technology, vol. 1, 1990, (United Kingdom), pp. 637-639 (No Month).
Gabla, P. M., et al. "Practical Implementation of a Highly Sensitive . . ." IEEE Photonics Technology Letters, vol. 3, No. 8, (Aug. 1991), pp. 727-729 .

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