US3785716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical waveguide delay line
Assignee: Corning Glass Works
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Filing: 1972-01-03
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Granted: 1974-01-15
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Expires: 1992-01-03
Abstract
Abstract A glass optical waveguide fiber having a V value in the range of about 1.0 to 35 is coiled about a support member to form one or more layers of fiber. A layer of light absorbing material may be disposed upon the surface of the fiber to prevent cross-talk. Where two or more layers of fiber are disposed on the support member, adjacent layers of fiber may be separated by a layer of light absorbing material if the fiber is not provided with an extramural absorbing layer.
Inventors
- 👤 R Maurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:19
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/28; G02B6/2804; G02B6/2861; H; H01; H01S; H01S3/00; H01S3/30; H01S3/302
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
131 words
An optical delay line comprising a support member, a coil of glass optical waveguide fiber supported by said support member, said fiber having a value of V in the range of about 1.0 to 35, V being determined by the equation V 2 pi a/ lambda square root (n1 + n2) (n1 - n2) where a is the core radius of the waveguide fiber, lambda is the wavelength of the light to be transmitted by the delay line, n1 is the core index of refraction and n2 is the cladding index of refraction, said optical waveguide fiber being coiled in such a manner that a plurality of overlapping layers of waveguide fiber is formed, and a tube of light absorbing material disposed between each adjacent pair of layers of waveguide fiber.
Claim 2
Dependent Claim
131 words
An optical delay line comprising a support member, a coil of glass optical waveguide fiber supported by said support member, said fiber having a value of V in the range of about 1.0 to 35, V being determined by the equation V 2 pi a/ lambda square root (n1 + n2) (n1 - n2) where a is the core radius of the waveguide fiber, lambda is the wavelength of the light to be transmitted by the delay line, n1 is the core index of refraction and n2 is the cladding index of refraction, said optical waveguide fiber being coiled in such a manner that a plurality of overlapping layers of waveguide fiber is formed, and a tube of light absorbing material disposed between each adjacent pair of layers of waveguide fiber.
Claim 3
Dependent Claim
44 words
An optical delay line in accordance with claim 1 further comprising means adjacent to one end of said fiber for launching an optical signal therein and means adjacent to the other end of said fiber for directing light emanating therefrom toward a utilization device.
Claim 4
Dependent Claim
39 words
An optical delay line in accordance with claim 1 wherein the V value of the said optical waveguide fiber is within the range of about 1.0 to 2.4, whereby a single mode of light is transmitted within said fiber.
Claim 5
Dependent Claim
161 words
An optical delay line comprising a support member, a coil of glass multimode optical waveguide fiber supported by said support member, said fiber comprising a core of glass having an index of refraction n1 surrounded by a sheath of glass having an index of refraction n2 which is lower than that of said core glass, said fiber having a value of V between about 2.4 and 35, V being determined by the equation V 2 pi a/ lambda Square Root (n1 + n2) (n1 - n2) where a is the core radius of the waveguide fiber and lambda is the wavelengTh of the light to be transmitted by the delay line, said optical waveguide fiber being coiled in such a manner that a plurality of overlapping layers of waveguide fiber is formed, and light absorbing means disposed upon the entire surface of said sheath to prevent light from radiating from one section of coiled waveguide and entering an adjacent section thereof.
Claim 6
Dependent Claim
161 words
An optical delay line comprising a support member, a coil of glass multimode optical waveguide fiber supported by said support member, said fiber comprising a core of glass having an index of refraction n1 surrounded by a sheath of glass having an index of refraction n2 which is lower than that of said core glass, said fiber having a value of V between about 2.4 and 35, V being determined by the equation V 2 pi a/ lambda Square Root (n1 + n2) (n1 - n2) where a is the core radius of the waveguide fiber and lambda is the wavelengTh of the light to be transmitted by the delay line, said optical waveguide fiber being coiled in such a manner that a plurality of overlapping layers of waveguide fiber is formed, and light absorbing means disposed upon the entire surface of said sheath to prevent light from radiating from one section of coiled waveguide and entering an adjacent section thereof.
Claim 7
Dependent Claim
173 words
An optical delay line comprising: a support member, a coil of glass optical waveguide fiber supported by said support member, said fiber comprising a core of glass having an index of refraction n1 surrounded by a sheath of glass having an index of refraction n2 which is lower than that of said core glass, said fiber having a value of V in the range of about 1.0 to 2.4 whereby a single mode of light is transmitted within said fiber, V being determined by the equation V 2 pi a/ lambda Square Root (n1 + n2) (n1 - n2) where a is the core radius of the waveguide fiber and lambda is the wavelength of light to be transmitted by the delay line, said optical waveguide fiber being coiled in such a manner that a plurality of overlapping layers of waveguide fiber is formed, and light absorbing means disposed upon the entire surface of said sheath to prevent light from radiating from one section of coiled waveguide and entering an adjacent section thereof.
Claim 8
Dependent Claim
173 words
An optical delay line comprising: a support member, a coil of glass optical waveguide fiber supported by said support member, said fiber comprising a core of glass having an index of refraction n1 surrounded by a sheath of glass having an index of refraction n2 which is lower than that of said core glass, said fiber having a value of V in the range of about 1.0 to 2.4 whereby a single mode of light is transmitted within said fiber, V being determined by the equation V 2 pi a/ lambda Square Root (n1 + n2) (n1 - n2) where a is the core radius of the waveguide fiber and lambda is the wavelength of light to be transmitted by the delay line, said optical waveguide fiber being coiled in such a manner that a plurality of overlapping layers of waveguide fiber is formed, and light absorbing means disposed upon the entire surface of said sheath to prevent light from radiating from one section of coiled waveguide and entering an adjacent section thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |