Miniature Laser Transmitter for Microwave Fiber Optic Link

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 36937
Amount: $66,611.00
Phase: Phase I
Program: SBIR
Awards Year: 1997
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Systems & Processes
401 Camp Craft Rd, Austin, TX, 78746
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr. Newton B. Penrose
 (512) 306-1100
Business Contact
Phone: () -
Research Institution
N/A
Abstract
Program provides capability to transfer microwave signals over fiber optic channel in 1 - 18 GHz band. Current operations require system to assess electric field within fuselage of an aircraft such as induced by radar sweep. Currently, non-fiber coaxial cable system is affected by leakage from external environment and requires holes for bulkhead connectors to be put in fuselage. Fiber optics do not pick up leakage and can be routed through existing pipes and apertures. Current baseline optical system is constrained to about 12 GHz. Development from this program extends fiber optic link bandwidth beyond 12 GHz by combining novel vertical cavity surface emitting laser (VCSEL) with electro-optic and microwave circuit and packaging technology. Proposed combination offers significant advantage in bandwidth, dynamic range, low power dissipation, and small transmitter size. At present, externally modulated lasers have large power consumption and are designed for long haul fiber optic links. Also, amplification stage connecting microwave antenna to laser module may consist of short band amplifiers in parallel. Proposed VCSEL based transmitter has smaller package, lower power dissipation and higher bandwidth for same dynamic range. Additionally, amplification stage connecting microwave antenna to laser module has a single wideband amplifier.

* information listed above is at the time of submission.

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