Multiport Single Mode Fiber Coupler Technique for Mechanical Microactuator to Damped Blood Flow

We have proposed and optimize the optical parameters to fabricate multiport fiber coupler to support microactuator device based on fusion and elongation techniques. The coupling coefficient between the fibers was derived by using Hankel and Bessel function. However, the fusion technique was experimentally described as a function of elongation speed. Good performance of multi fiber coupler has been obtained for fabrication parameters of fusion temperature and elongation speed of 1350 oC and 125 μm/s respectively. The proposed coupling coefficient shows a better accuracy with empirical one for various coupling length. The coupling coefficient is exponentially increased by reducing the distance between fibers. Finally, the microscopic analysis of coupling region deformation has shown that the silica material was well dispersed and distributed.