.Evanescent field absorption sensor for detection of cop-per (Ⅱ) in water using multimode optical fiber[J].Optoelectronics Letters,2009,5(3): Evanescent field absorption sensor for detection of cop-per (Ⅱ) in water using multimode optical fiber U. S. Raikar  V. K. Kulkarni  A. S. Lalasangi  I. I. Pattanashetti  J.F. Akki Department of Physics, Karnatak University, Dharwad 580003, India. ? Abstract:       The evanescent field absorption sensor for the detection of trace amount of copper (Ⅱ) in water is experimentally analyzed with the etched step index multimode plastic clad silica (PCS) fiber. The designed sensor is sensitive to copper (Ⅱ) content in water with a range up to 250 ppm. Hits: 3902 Download times: 210 View Full Text    Download reader