J. A. Arnaud

Electronics Letters, Volume 11, Issue 23, 13 November 1975, p. 554 – 556

ABSTRACT

A formulation of ray optics that takes the polarisation of electromagnetic waves into account shows that the maximum difference in time delay between corresponding HE and EH modes is, for almost any multimode graded-index fibre, of the order of 10 000 (Δn/n)2/V ns/km, where V is the V-number of the fibre and Δn is the variation of the refractive index between axis and cladding. The effect of polarisation on pulse broadening is found to be negligible if the V-number of the fibre is much larger than about 20.

LIEN VERS  L’ARTICLE : EFFECT OF POLARISATION ON PULSE BROADENING IN MULTIMODE GRADED-INDEX OPTICAL FIBRES

J. A. Arnaud

Microwave Theory and Techniques, IEEE Transactions on  (Volume:23 ,  Issue: 11), pages 935 – 936, Nov. 1975

ABSTRACT

In the above paper, Lewin gave an expression for the bending loss of a dielectric fiber with circular cross section. I have shown that the bending loss of arbitrary optical guides can be obtained in a simple manner when the field of the straight guide is known. The purpose of this letter is to show that the results of the two theories are in agreement, except for a factor of 2.

LIEN PAYANT VERS  L’ARTICLE : COMMENTS ON : « RADIATION FROM CURVED DIELECTRIC SLABS AND FIBERS « 

J. Arnaud, W. Mammel 

IEEE Transactions on Microwave Theory and Techniques, (Volume:23,  Issue: 11), Pages 927–929, Nov 1975

ABSTRACT

The integral of the square of the Airy function from one of its zeros to infinity is equal to the square of the first derivative of the Airy function at the zero considered. Two important applications of this result to fiber optics are discussed.

LIEN VERS  L’ARTICLE : APPLICATION OF A PROPERTY OF THE AIRY FUNCTION TO FIBER OPTICS (SHORT PAPER)