Raman spectroscopy provides information about molecular vibrations that can be used for material identification and quantization. The proposed infrared fiber-optic Raman sensor has wide applications to include environmental monitoring, homeland security, life science, matter physics, chemistry and bio-fuel production. It offers a non-destructive, non-contact method of qualitative and quantitative analysis suitable for both laboratories based and plant based applications. Currently, Raman spectrometer serves as an important instrument for Homeland Defense. It can be used for the bulk identification of explosives, chemical warfare agents, and other hazardous chemicals.