Fiber Optic Sensor for Unexploded Ordnance

Advanced autonomous detection of chemical warfare agents and other organic materials has long been a major military concern and is becoming an increasingly realistic threat. In this proposed Phase II program Foster-Miller, Inc. will complete thedevelopment of a unique robust miniature mid-infrared spectrometer covering the atmospheric window infrared wavelengths between 7.5 and 14.3 microns. It features no moving parts and a low-cost, high sensitivity uncooled linear array detector. Opticalperformance capabilities approach those of much larger, more expensive FTIR instruments, making it possible to passively detect chemical agent plumes against a cold sky background. The entire spectrometer including optics and electronics will be smallerthan a VHS tape cassette and weigh less than 2 lb. This novel monolithic construction IR spectrometer lends itself to air drop deployment and autonomous operation on a battlefield, thus providing the earliest possible warning of hostile chemical agentactivity.Phase I demonstrated feasibility and provided design data to support rapid development of a complete engineering prototype spectrometer during Phase II. This unit will be tested under simulated field conditions at the end of Phase II. A detailed planwill be presented for rapid transition to commercial manufacture by Foster-Miller's infrared sensor subsidiary, Sensiv, Inc. (p00685)