Mlihe zarei - Chemical Engineering Department, Islamic Azad University, Qochan Branch, Qochan-Iran
Afshin farahbakhsh - Chemical Engineering Department, Islamic Azad University, Qochan Branch, Qochan-Iran

Biosensor has rapidly become essential analytical tools, since they offer higher performance in terms of sensitivity and selectively than any other currently available diagnostic device. The development of biosensor technology represents a crucial task for environmental pollution management, there is a considerable need to project and realize biosensors with the best features for commercialization, such as selectivity, sensitivity, stability, reproducibility and low cost. With appropriate progress testing and commercialization, biosensors will have an important impact on environmental monitoring, reducing costs and increasing the efficiency of certain applications. This review paper focused the principles of optical biosensor fabrication and operation.

Biosensors, types, optical