Multicomponent optical waveguide having index gradient
US4222631A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1978 |
| Grant date | Sep 16, 1980 |
| Priority date | — |
| Expiry date | Mar 3, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2207/86
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An optical waveguide for a communication system includes a graded index core formed from at least three glass-forming compounds with a profile having at least two .alpha.-type index profile terms. The core has a refractive index which is n.sub.c at the center of the core and which varies as a function of the radial distance r from the center of the core subststantially as: ##EQU1## where .alpha..sub.i is defined by: ##EQU2## where N.gtoreq.2, PA1 .DELTA.=(n.sub.c.sup.2 -n.sub.0.sup.2)/2n.sub.c.sup.2, PA1 n.sub.o is the refractive index of said compounds at r=a, PA1 N.sub.c =n.sub.c -.lambda.dn.sub.c /d.lambda. where .lambda. is the wavelength of the light source, and the quantities .DELTA..sub.i are parameters which can be varied provided the condition ##EQU3## is satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.