Patent ID: 8489369

Claim:
A computer program stored on a computer readable storage device for carrying out a method for calculating a bandwidth of a laser source and a multimode fiber optic cable, wherein the method accounts for both modal and chromatic dispersion effects within the multimode fiber optic cable, the method comprising: measuring temporal responses of the multimode fiber optic cable, U(r,t), using pulses of light with a central wavelength, λ c , injected into a core of the multimode fiber optic cable at series of radial offsets, r from the core; computing a plurality of fiber chromatic dispersion transfer functions, H cd (f,r) wherein said plurality of fiber chromatic dispersion transfer functions are used to relate output pulses of light to input pulses of light after chromatic dispersion at series of radial offsets r; and outputting a total calculated bandwidth, CB(n) which was computed using the plurality of fiber chromatic dispersion transfer functions, H cd (f,r), on a display.