The mode analysis of signals in a multimodal shallow harmonic waveguide whose eigenfrequencies are equally spaced and finite can be performed by an optoelectronic device, of which the optical part uses the guide to sample the wave field at a number of sensors along its axis and the electronic part computes their fast Fourier transform. We illustrate this process with the Kravchuk transform.
|Number of pages||3|
|Journal||Journal of the Optical Society of America A, Optics, Image Science and Vision|
|Publication status||Published - 2000|