Abstract: We are going to analyze the effect of bend loss in large core multimode optical fiber beam delivery system by varying the core diameter of the fiber, its bend radius and the wavelength of the laser used. By analyzing the bend loss after varying the various parameters for different fibers, the fiber which contributes minimal bend loss is taken for the beam delivery system application.

Keywords: Beam Delivery system, Bend radius, Bend loss, Multimode Optical Fiber.