Abstract
We describe a technique of using a variable wavelength source to study mode cut-offs up to aV value of 20 for the optical fibre by means of the radiated (scattered) power leaving the fibre. This allows the identification of individual modes in a fibre carrying up to 80 or 100 modes in all and provides a non-destructive method for the study of the length and bend dependence of the energy carried by the highest order modes.
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Midwinter, J.E., Reeve, M.H. A technique for the study of mode cut-offs in multimode optical fibres. Opto-electronics 6, 411–416 (1974). https://doi.org/10.1007/BF01476406
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DOI: https://doi.org/10.1007/BF01476406