Patent EP0164681A2 successfully refreshed from Google Patents.
EP0164681A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Single mode optical fiber
Assignee: Viavi Solutions Inc
•
Filing: 1985-06-05
•
Granted: —
•
Expires: 2005-06-05
Abstract
Abstract A single mode optical fiber of stepped index of refraction. Both core and cladding are fabricated of pure fused silica doped with a small base percentage of fluorine to substantially eliminate hydroxylions and reduce viscosity. In addition to the base amount of fluorine, the cladding contains a further amount for lowering its index of refraction relative to that of the core and for further reducing viscosity.
Inventors
- 👤 John Wilbur Hicks, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 14:27
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/02; C; C03; C03C; C03C13/00; C03C13/04; C03C13/045
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
41 words
A single mode optical fiber comprising a core consisting essentially of pure fused silica containing an amount of fluorine uniformly distributed throughout and a cladding consisting essentially of pure fused silica containing an amount of fluorine exceeding that in said core.
Claim 2
Dependent Claim
41 words
A single mode optical fiber comprising a core consisting essentially of pure fused silica containing an amount of fluorine uniformly distributed throughout and a cladding consisting essentially of pure fused silica containing an amount of fluorine exceeding that in said core.
Claim 3
Dependent Claim
24 words
The optical fiber of claim 1 wherein said amount of fluorine in said core is within the range of 0.1 to 0.2 mole percent.
Claim 4
Dependent Claim
26 words
The optical fiber of claim 1 or 2 wherein said amount of fluorine in said cladding is within the range of 0.91 to 1.81 mole percent.
Claim 5
Dependent Claim
34 words
The optical fiber of claim 1 wherein the index of refraction of said core is within the range of 1.4454 and 1.4446 and that of said cladding is lower by between 0.0035 and 0.0069.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.