Ammonia detection in water with balloon-like plastic optical fiber sensor

Abstract This work presents the demonstration of a plastic optical fiber (POF)-based ammonia sensor. The sensor head is formed by bending an unclad optic into balloon-like structure. radius bent varied from 1.0 to 2.5 cm. performance each tested using solution with concentration ranging 0 15 mg/L. Results show that optimized performances proposed occur when fixed at 1.5 At this radius, illustrates sensitivity - 0.0024 (mg/L)-1 linearity 0.97 and resolution 4.17 For comparison, compared straight former found be more superior. In addition, further real water samples. 0.0022 0.95 4.54 result shows has comparable in detection for both pure essence, functions without additional coating on head, making it favorable terms simplicity design.