US5448672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical fibers with matte finishes
Assignee: Furukawa Electric North America Inc
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Filing: 1991-11-27
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Granted: 1995-09-05
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Expires: 2011-11-27
Abstract
Abstract A mixture of buffered hydrofluoric acid (e.g., HF and NH 4 F) and a treating agent (e.g., acetic acid, phosphoric acid, hydrochloric acid, sulfuric acid or formic acid) is used to produce a matte finish on the pure silica cladding of an optical fiber. The matte finish may be used to increase the adhesion of other materials to the glass (e.g., of metal coatings to silica fibers) or to reduce glare.
Inventors
- 👤 Greg E. Blonder
- 👤 Bertrand H. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:59
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/245; C; C03; C03C; C03C15/00; C03C25/00; C03C25/10; C03C25/104; C03C25/106; C03C25/1061; C03C25/1063; C03C25/66; C03C25/68; G02B6/42; G02B6/4201; G02B6/4248
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
32 words
A silica optical fiber having a silica cladding with an exterior surface, the fiber being characterized by the surface having a textured or matte etched finish on at least a portion thereof.
Claim 2
Dependent Claim
32 words
A silica optical fiber having a silica cladding with an exterior surface, the fiber being characterized by the surface having a textured or matte etched finish on at least a portion thereof.
Claim 3
Dependent Claim
13 words
The fiber of claim 1 including a metal layer disposed on said portion.
Claim 4
Dependent Claim
41 words
An optoelectronic package comprising an optoelectronic device, a fiber according to claim 2 aligned in optical communication with said device, said fiber extending through an aperture in said package, said metal layer being hermetically sealed in said aperture to said package.
References Cited (Backward Citations)
FR1534990A
Cited
US3616098A
Cited
US3551228A
Cited
GB1276550A
Cited
CH512402A
Cited
FR2320275A1
Cited
US4055458A
Cited
US4033668A
Cited
US4180847A
Cited
US4271104A
Cited
JPS5747744A
Cited
JPS57188007A
Cited
US4796970A
Cited
US4693552A
Cited
JPS60174110A
Cited
JPS61127642A
Cited
US4786138A
Cited
DE3516899A1
Cited
JPS63153519A
Cited
US5062685A
Cited
US5200024A
Cited
US5046815A
Cited
US5321257A
Cited
US5280137A
Cited
JPH0659309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-09-04 | 1999-03-06 | 1999-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-04 | 2003-03-06 | 2003-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-04 | 2007-03-06 | 2007-09-05 | $7700.00 | Window Closed / Lapsed |