Fiber coupler is a great utilization to combine and to split one or more optical power input and outputs. Power transfer in fiber coupler depends on the geometry of the waveguides and the coupling coefficient. Power transfers between the waveguides are calculated using matrix transfer method. By introducing power input to the one of the waveguides, assuming cross section, power propagation, and fiber axis are held constants at coupling constant coupling coefficient, it shows that coupling length of NX2, linear order NX3, and triangular NX3 fiber couplers are odd-multiple of z= /(2 ), z= /((...

Although a fiber coupler is widely used in application and numerous methods have been researched, several phenomena still occur in the optical fiber, where power in fiber couplers not only depends on the waveguides, but also the power parameters. A matrix transfer method is used to model phenomena for several junctions. An optical switch, the fabricated fusion directional coupler, enables the routing of optical data signals without the need for conversion to electrical signal, independent of data rate and protocol. Therefore, an applied voltage is designed to control and drive parametric...

The performance of wavelength division multiplexing (WDM) in radio over fiber (RoF) systems is found to be strongly influenced by nonlinearity characteristics in side the fiber. The effect of four wave mixing (FWM) as one of the influential factors in the WDM for RoF has been studied here using Optisystem and Matlab. From the results obtained, it is found that the FWM effects have become significant at high optical power levels and have become even more significant when the capacity of the optical transmission line is increased, which has been done by either increasing the channel ...