Methods of improving line of sight wireless optical...

Optical communications – Transmitter and receiver system – Including compensation

Reexamination Certificate

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C398S159000, C398S119000

Reexamination Certificate

active

07106972

ABSTRACT:
A method of improving a signal-to-noise (S/N) ratio for a light signal transmitted by wireless optical communication through adverse environmental conditions, the light signal including a snake component and a ballistic component for carrying coded information, and a diffusive component that adds to background noise, the method comprising the steps of: encoding information to be transmitted by the light signal, wherein the light signal is one of a serial train of code pulses or a modulated light beam; selecting an appropriate wavelength for the encoded light signal; transmitting the encoded light signal though the adverse environmental conditions; receiving the encoded light signal; sorting the received encoded light signal to preferentially select the information carrying components and reduce the diffusive component; and detecting the sorted encoded light signal with a photo-detector.

REFERENCES:
patent: 5140463 (1992-08-01), Yoo et al.
patent: 5371368 (1994-12-01), Alfano et al.
patent: 5710429 (1998-01-01), Alfano et al.
patent: 5719399 (1998-02-01), Alfano et al.
patent: 5813988 (1998-09-01), Alfano et al.
patent: 5847394 (1998-12-01), Alfano et al.
patent: 5929443 (1999-07-01), Alfano et al.
patent: 6108576 (2000-08-01), Alfano et al.
Yoo and Alfano, “Time-resolved coherent and incoherent components of forward light scattering in random media”, Opt. Lett. 15, 320 (1990).
Wang et al., “Ballistic 2-D Imaging Through Scattering Walls Using An Ultra Fast Kerr Gate”, Science 253, 769 (1991).
Gayen and Alfano, “Emerging Optical Biomedical Imaging Techniques”, Opt. Photon. News 7(3), 22 (1996).
Dolne, et al., “IR Fourier Space Gate and Absorption Imaging Through Random Media”, Lasers Life Sci. 6, 131 (1994).
Demos and Alfano, “Temporal gating in highly scattering media by the degree of optical polarization”, Opt. Lett. 21, 161 (1996).
Cai et al., “Analytical Solution of the Elastic Boltzmann Transport Equation in an Infinite Uniform Medium Using Cumulant Expansion”, J. Phys. Chem B104, 3996 (2000).
Cai et al., “Analytical Solution of the polarized photon transport equation in an infinite uniform medium using cumulant expansion”, Phys. Rev. E63, 166606 (2001).

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