//Optoelectronics and Fiber Optics Communication by C.R. Sarkar and D.C. Sarkar //Example 2.4 //OS = Windows 7 //Scilab version 5.5.2 clc; clear; //given a=5*10^-6;//radius in m Vc=2.405;//cut off value of V-parameter for single mode n1=1.46;//refractive index of the core delta=0.0025;//refractive index difference between the core and cladding c1=(2*delta)^0.5;//constant value c2=(2*%pi*a)/Vc;//constant value lamdac=c2*n1*c1;//cut off wavelength in m mprintf("\n Cut-off Wavelength is = %.2f um ",lamdac*1e6);//multiplication by 1e6 to convert the unit from m to um //The answer vary due to rounding