In this paper, we have investigated the bending losses that occur in an optical fiber, which results in loss of power and efficiency for highly sensitive applications. We have analyzed different power results on the bending of an optical fiber concerning the number of turns and the bending radius. The result analysis has done with both plastic and silica fibers on the mentioned parameters. The simulation result shows power loss in fiber when radius of curvature changed with fixed number of turns on fiber wrapping. The experimental results have presented with the effects of bending radius and wrapping turn on fiber. The observation of this analysis helps to develop modeling of plastic optical and silica fiber to draw sensing structure. This paper focuses on areas of medical, industrial applications where highly sensitive applications are required, and losses in transmission cannot be compromised. © 2020 SPIE.