Single-mode-transmission optical fiber and a method of manufactu

Details Single-mode-transmission optical fiber and a method of manufactu Single-mode-transmission optical fiber and a method of manufactu

1981-02-20

1983-09-27

Lee, John D.

65 312, G02B 5172

Patent

active

044065183

ABSTRACT:
A single-mode-transmission optical fiber comprises a core of a radius a having an arbitrary (non constant) refractive index distribution n(r) in the radial direction r, the index distribution being expressed by n.sup.2 (r)=n.sub.1.sup.2 {1-2.DELTA..sub.o f(r)}, and a cladding having a constant refractive index n.sub.2, the radius a of the core being: ##EQU1## In these expressions, n.sub.1 denotes a maximum refractive index of the core, .lambda. denotes a transmission light wavelength, ##EQU2## and a normalized frequency V is expressed by ##EQU3## Y is a solution Y in the case where X and Y are solutions of simultaneous equations: ##EQU4## of a function which is expressed by: ##EQU5##

REFERENCES:
patent: 3823997 (1974-07-01), Gloge et al.
patent: 4089586 (1978-05-01), French et al.
patent: 4205901 (1980-06-01), Ramsay et al.
Gambling et al., "Cut-Off Frequency in Radially Inhomogeneous Single-Mode Fibre," Elect. Lett., vol. 13, No. 5, Mar. 1977, pp. 139-140.
Snyder et al., "Dispersion in Graded Single-Mode Fibres," Elect. Lett., vol. 15, No. 10, May 1979, pp. 269-271.
Gambling et al., "Zero Total Dispersion in Graded-Index Single-Mode Fibres," Elect. Lett., vol. 15, No. 15, Jul. 1979, pp. 474-476.

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