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Perturbation theory of low-V optical fibres with dip in the refractive index (1979)

Sammut, R. A.

Springer

Optical and quantum electronics 11 (1979), S. 147-151

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ISSN: 1572-817X

Source: Springer Online Journal Archives 1860-2000

Topics: Electrical Engineering, Measurement and Control Technology , Physics

Notes: Abstract A simple perturbation theory has been used to study the characteristics of low-V, step-index optical fibres with a dip in the centre of the refractive index profile. Analytical expressions have been derived for the cut-off frequency and propagation constant of an arbitrary mode on such a fibre. In particular, it has been shown that even when the dip is quite large, the perturbation theory results for the propagation constant of the fundamental mode and cut-off frequency of the second mode are virtually indistinguishable from exact numerical results calculated by series expansion techniques.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00624393

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