EP0089655A1
Expired / Lapsed
EP
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Single mode optical fibre
Assignee: International Standard Electric Corp
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Filing: 1983-03-19
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Granted: —
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Expires: 2003-03-19
Abstract
Abstract Designs of fluoride glass optical fibre are disclosed which exhibit substantially zero total dispersion over a band of wavelengths.
Inventors
- 👤 Kevin Christopher Byron
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 17:30
CPC Classifications
C; C03; C03C; C03C13/00; C03C13/04; C03C13/041; C03C13/042; C03C3/00; C03C3/32; C03C3/325; G; G02; G02B; G02B6/00; G02B6/10; G02B6/102
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
A single mode optical fibre having a core and a cladding, characterized in that it is made of a material whose composition is such that at the wavelength of zero material dispersion the first derivative with respect to wavelength of its material dispersion is substantially constant and has a value of Less than 50 ps/mm·km·µm and that it has a waveguide dispersion whose magnitude substantially balances that of the material dispersion over a band of wavelengths so as to provide the fibre with substantially zero total dispersion over that wavelength band.
Claim 2
Dependent Claim
91 words
A single mode optical fibre having a core and a cladding, characterized in that it is made of a material whose composition is such that at the wavelength of zero material dispersion the first derivative with respect to wavelength of its material dispersion is substantially constant and has a value of Less than 50 ps/mm·km·µm and that it has a waveguide dispersion whose magnitude substantially balances that of the material dispersion over a band of wavelengths so as to provide the fibre with substantially zero total dispersion over that wavelength band.
Claim 3
Dependent Claim
29 words
A single mode optical fibre as claimed in claim 1 characterized in that the wavelength band of substantially zero dispersion is of the order of 1 µm in width.
Claim 4
Dependent Claim
22 words
A single mode fibre as claimed in claim 1 or 2, characterized in that the fibre is made of a halide glass.
Claim 5
Dependent Claim
20 words
A single mode fibre as claimed in claim 3, characterized in that the fibre is made of a fluoride glass.
Claim 6
Dependent Claim
49 words
A single mode fibre as claimed in claim 4, characterized in that it is made of a glass with the molar percentage constituents 62HfF 4 -33BaF 2 -5LaF 3 , that its core diameter is 5,8 µm and that its core cladding refractive index difference is 20·10 -3 .
Claim 7
Dependent Claim
49 words
A single mode fibre as claimed in claim 4, characterized in that it is made of a glass with the molar percentage constituents 63ZrF 4 -33BaF 2 -4GdF 3 , that its core diameter is 5,7 µm and that its core cladding refractive indes difference is 20·10 -3 .
Claim 8
Dependent Claim
49 words
A single mode fibre as claimed in claim 4, characterized in that it is made of a glass with the constituents ZrF 4 -BaF 2 -ALF 3 -LaF 2 , that its core diameter is 6,8 µm and that its core cladding refractive index difference is 18·10 -3 .
References Cited (Backward Citations)
No citation records indexed.
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