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Optimized Coding and Protocols for Free-Space Optical Communications Links

Award Information

Agency:
Department of Defense
Branch:
Navy
Award ID:
87597
Program Year/Program:
2008 / SBIR
Agency Tracking Number:
N081-072-0318
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Iris AO, Inc.
2680 Bancroft Way Berkeley, CA 94704-1717
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2008
Title: Optimized Coding and Protocols for Free-Space Optical Communications Links
Agency / Branch: DOD / NAVY
Contract: N00014-08-M-0180
Award Amount: $69,999.00
 

Abstract:

High-speed laser communications in adverse maritime conditions are necessary to transfer large amounts of data needed for command-and-control, target selection, or other intelligence. Atmospheric turbulence causes scintillation, variation of signal strength, and an increase in the bit-error rate (BER). Obscurations such as debris or fog cause scattering and a decrease in the signal and the information it contains. Conventional adaptive optics can be used to mitigate some of the turbulence effects, but data rates still need to remain high. In collaboration with our partner, the University of North Carolina at Charlotte (UNCC), we have recently finished some theoretical developments and laboratory demonstrations that will provide a novel optimized coding for the optical communications beam. Our coding scheme is based upon modulating a beam with an optical vortex with different vortex "charge" applied to each pulse. The pulse is then detected and the optical charge is determined. We can vary the vortex charge and thereby code each pulse with various values to increase the final data rate. The vortices placed on the beam are known to maintain their charge as the beam propagates through atmospheric turbulence, around small particulates (dust), and even fog.

Principal Investigator:

Michael Helmbrecht
CEO & President
5108492375
michael.helmbrecht@irisao.com

Business Contact:

Michael Helmbrecht
CEO & President
5108492375
michael.helmbrecht@irisao.com
Small Business Information at Submission:

IRIS AO, INC.
2680 Bancroft Way Berkeley, CA 94704

EIN/Tax ID: 043693091
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No