US4682850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical fiber with single ultraviolet cured coating
Assignee: U S Holding Co Inc
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Filing: 1984-06-25
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Granted: 1987-07-28
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Expires: 2004-06-25
Abstract
Abstract An optical fiber coated with a single ultraviolet cured resin wherein the attenuation losses are less than 0.5 decibels/kilometer. The resin has a tensile modulus of about 7,800 psi. This cable is particularly useful in loosely wrapped cable structures such as open channel or loose tube cables.
Inventors
- 👤 John S. White
- 👤 A. Dahlgren Vaughan
- 👤 Francis I. Akers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:09
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4429; G02B6/443; G02B6/4431; C; C03; C03C; C03C25/00; C03C25/10; C03C25/104; C03C25/106
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
111 words
An optical fiber comprising a core and a cladding formed of similar materials, the core having a higher index of refraction than the cladding, and a single layer of ultraviolet cured resin having a thickness of at least 50 microns around said cladding, said single layer of ultraviolet cured resin exhibiting a tensile modulus in the range of about 1,000 psi to 10,000 psi, said fiber having attenuation losses of less than about 0.5 decibels/kilometer at room temperature and at -40° C. Celsius when transmitting light at about 1,300 or about 1,550 nanometers and otherwise being buffered by said single layer in a manner similar to a double coated optical fiber.
Claim 2
Dependent Claim
111 words
An optical fiber comprising a core and a cladding formed of similar materials, the core having a higher index of refraction than the cladding, and a single layer of ultraviolet cured resin having a thickness of at least 50 microns around said cladding, said single layer of ultraviolet cured resin exhibiting a tensile modulus in the range of about 1,000 psi to 10,000 psi, said fiber having attenuation losses of less than about 0.5 decibels/kilometer at room temperature and at -40° C. Celsius when transmitting light at about 1,300 or about 1,550 nanometers and otherwise being buffered by said single layer in a manner similar to a double coated optical fiber.
Claim 3
Dependent Claim
19 words
An optical fiber in accordance with claim 1 wherein said resin has a tensile modulus of about 7,800 psi.
Claim 4
Dependent Claim
21 words
An optical fiber in accordance with claim 2 wherein said resin has a Shore A hardness of about 70 to 75.
Claim 5
Dependent Claim
78 words
An optical fiber comprising a core and a cladding formed of fused silica, the core having an index of refraction higher than the cladding, and a single layer of ultraviolet cured resin around said cladding, said single layer having a thickness of at least 50 microns, said resin having a tensile modulus of about 1,000 psi to about 10,000 psi and said single layer buffering said optical fiber in a manner similar to a double coated optical fiber.
Claim 6
Dependent Claim
78 words
An optical fiber comprising a core and a cladding formed of fused silica, the core having an index of refraction higher than the cladding, and a single layer of ultraviolet cured resin around said cladding, said single layer having a thickness of at least 50 microns, said resin having a tensile modulus of about 1,000 psi to about 10,000 psi and said single layer buffering said optical fiber in a manner similar to a double coated optical fiber.
Claim 7
Dependent Claim
18 words
An optical fiber in accordance with claim 4 wherein said resin has a modulus of about 7,800 psi.
Claim 8
Dependent Claim
21 words
The optical fiber in accordance with claim 5 wherein said resin has a Shore A hardness of about 70 to 75.
Claim 9
Dependent Claim
26 words
An optical fiber in accordance with claim 4 wherein the attenuation losses of said fiber are relatively constant from about -40° Celsius to about +60° Celsius.
Claim 10
Dependent Claim
106 words
An optical fiber cable comprising an optical fiber having a single layer of ultraviolet cured resin therearound, said single layer having a thickness of at least 50 microns and exhibiting a Shore A hardness of about 70 to 75 and a tensile modulus in the range of about 1,000 to 10,000 psi, said optical fiber having attenuation losses of less than about 0.5 decibels/kilometer when transmitting at about 1,300 nanometers or about 1,550 nanometers, and otherwise being buffered by said single layer in a manner similar to a double coated optical fiber and a cable structure, said optical fiber being loosely contained in said cable structure.
Claim 11
Dependent Claim
106 words
An optical fiber cable comprising an optical fiber having a single layer of ultraviolet cured resin therearound, said single layer having a thickness of at least 50 microns and exhibiting a Shore A hardness of about 70 to 75 and a tensile modulus in the range of about 1,000 to 10,000 psi, said optical fiber having attenuation losses of less than about 0.5 decibels/kilometer when transmitting at about 1,300 nanometers or about 1,550 nanometers, and otherwise being buffered by said single layer in a manner similar to a double coated optical fiber and a cable structure, said optical fiber being loosely contained in said cable structure.
Claim 12
Dependent Claim
17 words
An optical fiber cable in accordance with claim 8 wherein said cable structure is open channel cable.
Claim 13
Dependent Claim
17 words
An optical fiber cable in accordance with claim 8 wherein said cable structure is loose tube cable.
Claim 14
Dependent Claim
19 words
An optical cable in accordance with claim 8 wherein said resin has a tensile modulus of about 7800 psi.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-27 | 1991-01-26 | 1991-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-27 | 1995-01-26 | 1995-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-27 | 1999-01-26 | 1999-07-28 | $7700.00 | Window Closed / Lapsed |