DETERMINATION OF THE OPTICAL-PROPERTIES OF A MONOMODE OPTICAL-FIBER BY FRINGES OF EQUAL CHROMATIC ORDER

Multiple beam fringes of equal chromatic order are used to study the o ptical properties of a monomode optical fibre. The material dispersion of the core and that of the cladding of the fibre are measured. A mod ified single term Sellmeier dispersion formula is adopted and fitted t o the experimental data. A new simple scheme of calculation is applied to reduce the interferogram. A single interferogram is sufficient to give the whole dispersion information needed across the visible spectr um.