Adaptive Fiber Optic Acoustic Emission Sensor (FAESense) System for Condition Based Maintenance Navy SBIR FY2009.1 Sol No.: Navy SBIR FY2009.1 Topic No.: N091-077 Topic Title: Adaptive Fiber Optic Acoustic Emission Sensor (FAESense) System for Condition Based Maintenance Proposal No.: N091-077-0970 Firm: Redondo Optics, Inc. 811 N. Catalina Avenue, Suite 1100 Redondo Beach, California 90277-2198 Contact: Edgar Mendoza Phone: (310) 292-7673 Web Site: www.redondooptics.com Abstract: In Phase I of this program, Redondo Optics Inc. (ROI), proposes to design, build, and demonstrate to the Navy a next generation, stand-alone and fully integrated, dynamically reconfigurable, adaptive fiber optic acoustic emission sensor (FAESenseT) system for the in-situ unattended detection and localization of shock events, impact damage, cracks, voids, and delaminations in new and aging DoD critical infrastructures found in ships, submarines, aircraft, and in next generation weapon systems. ROI's FAESenseT system is based on the integration of proven state-of-the-art technologies: 1) distributed array of in-line fiber Bragg gratings (FBGs) sensors sensitive to strain, vibration, and acoustic emissions, 2) adaptive spectral demodulation of FBG sensor dynamic signals using two-wave mixing interferometry on photorefractive semiconductors, and 3) integration of all the sensor system passive and active opto-electronic components at the microchip level. In Phase II the FAESenseT system will be fully engineer and package for extensive testing and qualification on selected Navy platforms. In Phase III the FAESenseT technology will be transition to Navy operations, other DoD branches, and the commercial sector. Benefits: ROI's FAESenseT system represents a new, highly robust and reliable, technology that can be used for structural health monitoring and prognostics of DoD and commercial infrastructures. Its miniaturized package, low power operation, state-of-the-art data communications, and affordable price makes it a very attractive solution for a large number of applications in naval and maritime industries, aerospace, civil structures, the oil and chemical industry, and for homeland security applications. Return