US3877912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing an optical transmission line
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1973-10-09
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Granted: 1975-04-15
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Expires: 1993-10-09
Abstract
Abstract Method of producing an optical transmission line is provided which comprises forming, on the inside wall of a highly transparent cylindrical medium, a highly transparent deposition layer having a refractive index higher than that of said cylindrical medium to form a double-layered cylinder; coaxially inserting into said cylinders, a highly transparent round rod medium having the same refractive index as that of said cylindrical medium; then melting them under heating and drawing so as to reduce the diameters thereof thereby forming a fiber comprising a double-layered cylindrical medium and round rod medium integrated coaxially without clearance between them.
Inventors
- 👤 Satoshi Shiraishi
- 👤 Kunio Fujiwara
- 👤 Shiro Kurosaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:37
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/02; G02B6/036; G02B6/03616; G02B6/03622; G02B6/03633; C; C03; C03B; C03B37/00; C03B37/01; C03B37/012; C03B37/01205; C03B37/01211; C03B37/01225; C03B37/0124; C03B37/01245; C03B37/014; C03B37/01413; C03B37/018; C03B37/01807; C03B37/02; C03B37/025; C03B37/027; C03B37/02754; C03B2201/00; C03B2201/06; C03B2201/30; C03B2201/32; C03B2201/40; C03B2201/42; C03B2201/50; C03B2201/54; C03B2203/00; C03B2203/10; C03B2203/22; C03B2203/24; C03B2205/00; C03B2205/12; C03B2205/14; C03B2205/16; G02B6/03605; G02B6/03611
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
98 words
A method of producing an optical transmission line which comprises forming, on an inside wall of highly transparent cylinder medium, a highly transparent deposition layer having a refractive index higher than that of said cylinder medium thus to form a double-layered cylinder; coaxially inserting into said cylinders, a highly transparent round rod medium having the same refractive index as that of the said cylindrical media; then heating them to melt and draw so as to reduce the diameter thereby forming a fiber comprising a double-layered cylindrical medium and a round rod medium integrated coaxially without clearance between them.
Claim 2
Independent Claim
98 words
A method of producing an optical transmission line which comprises forming, on an inside wall of highly transparent cylinder medium, a highly transparent deposition layer having a refractive index higher than that of said cylinder medium thus to form a double-layered cylinder; coaxially inserting into said cylinders, a highly transparent round rod medium having the same refractive index as that of the said cylindrical media; then heating them to melt and draw so as to reduce the diameter thereby forming a fiber comprising a double-layered cylindrical medium and a round rod medium integrated coaxially without clearance between them.
Claim 3
Independent Claim
99 words
A method of producing an optical transmission line which comprises forming a double-layered round rod by providing, on the outer surface of a highly transparent round rod medium, a deposition layer of highly transparent medium having refractive index higher than that of said round rod medium; coaxially inserting said double-layered round rod into a highly transparent cylindrical medium having a refractive index equal to that of the inner rod portions; then, heating to melt the lower portions of them and drawing so as to decrease the cross section thereof thereby forming a coaxially integrated fiber without clearance between them.
Claim 4
Independent Claim
99 words
A method of producing an optical transmission line which comprises forming a double-layered round rod by providing, on the outer surface of a highly transparent round rod medium, a deposition layer of highly transparent medium having refractive index higher than that of said round rod medium; coaxially inserting said double-layered round rod into a highly transparent cylindrical medium having a refractive index equal to that of the inner rod portions; then, heating to melt the lower portions of them and drawing so as to decrease the cross section thereof thereby forming a coaxially integrated fiber without clearance between them.
Claim 5
Independent Claim
171 words
A method of producing an optical transmission line which comprises forming a deposition layer of optically higher dielectric loss tangent medium on the inside wall of a first cylinder of optically highly transparent medium and heating to melt said cylinder and drawing it so as to decrease the cross section thereof to form a round rod having close structure through the cross section; forming at the same time a second double-layered construction comprising a second cylindrical portion highly transparent optically and having the same medium as that of the said first cylindrical medium and a deposition layer of highly transparent medium having a refractive index higher than that of said second cylindrical medium and formed on the inside wall of said second cylinder; inserting said round rod portion having a close cross section into said second double-layered cylinder; melting under heating and spinning the same so as to reduce the cross section thereof thereby forming a fiber without clearance comprising said round rod portion and said second cylindrical integrated together coaxially.
Claim 6
Independent Claim
171 words
A method of producing an optical transmission line which comprises forming a deposition layer of optically higher dielectric loss tangent medium on the inside wall of a first cylinder of optically highly transparent medium and heating to melt said cylinder and drawing it so as to decrease the cross section thereof to form a round rod having close structure through the cross section; forming at the same time a second double-layered construction comprising a second cylindrical portion highly transparent optically and having the same medium as that of the said first cylindrical medium and a deposition layer of highly transparent medium having a refractive index higher than that of said second cylindrical medium and formed on the inside wall of said second cylinder; inserting said round rod portion having a close cross section into said second double-layered cylinder; melting under heating and spinning the same so as to reduce the cross section thereof thereby forming a fiber without clearance comprising said round rod portion and said second cylindrical integrated together coaxially.
Claim 7
Independent Claim
134 words
A method of producing an optical transmission line which comprises forming, on the inner and the outer surfaces of a highly transparent cylindrical medium, a thin deposition layer having a high optical dielectric loss tangent and a highly transparent deposition layer of the medium having a refractive index higher than that of said highly transparent cylindrical medium respectively; melting them under heating and drawing so as to reduce the cross section thereby forming a round rod portion being close throughout the cross section thereof; then coaxially inserting said round rod portion into a highly transparent second cylindrical medium and melting them under heating and drawing so as to decrease tHe cross section thereby coaxially integrating said round rod portion and said cylindrical portion to form a fiber without clearance in the cross section thereof.
Claim 8
Independent Claim
134 words
A method of producing an optical transmission line which comprises forming, on the inner and the outer surfaces of a highly transparent cylindrical medium, a thin deposition layer having a high optical dielectric loss tangent and a highly transparent deposition layer of the medium having a refractive index higher than that of said highly transparent cylindrical medium respectively; melting them under heating and drawing so as to reduce the cross section thereby forming a round rod portion being close throughout the cross section thereof; then coaxially inserting said round rod portion into a highly transparent second cylindrical medium and melting them under heating and drawing so as to decrease tHe cross section thereby coaxially integrating said round rod portion and said cylindrical portion to form a fiber without clearance in the cross section thereof.
Claim 9
Dependent Claim
42 words
A method of producing an optical transmission line as defined in claim 3 characterized in that a trace amount of transition elemental metal having high absorption for the used wavelength is added for forming a medium having a high dielectric loss tangent.
Claim 10
Dependent Claim
34 words
A method of producing an optical transmission line as defined in claim 1 characterized in that finely divided particles are deposited and, thereafter, sintered to effect the vitrification thereof on forming a deposition layer.
Claim 11
Dependent Claim
33 words
A method of producing an optical transmission line as defined in claim 6 characterized in that the vitrification of the finely divided particles is effected in one step on forming a deposition layer.
Claim 12
Dependent Claim
58 words
A method of producing an optical transmission line as defined in claim 3 characterized by inserting the first cylinder into the second cylinder, melting them under heating, and crushing the clearance within said first cylinder and that between said first cylinder and said second cylinder on spinning thus to form a fiber having cross section without clearance therein.
Claim 13
Dependent Claim
42 words
A method of producing an optical transmission line as defined in claim 4 characterized in that a trace amount of transition elemental metal having high absorption for the used wavelength is added for forming a medium having a high dielectric loss tangent.
Claim 14
Dependent Claim
34 words
A method of producing an optical transmission line as defined in claim 2 characterized in that finely divided particles are deposited and, thereafter, sintered to effect the vitrification thereof on forming a deposition layer.
Claim 15
Dependent Claim
34 words
A method of producing an optical transmission line as defined in claim 3 characterized in that finely divided particles are deposited and, thereafter, sintered to effect the vitrification thereof on forming a deposition layer.
Claim 16
Dependent Claim
34 words
A method of producing an optical transmission line as defined in claim 4 characterized in that finely divided particles are deposited and, thereafter, sintered to effect the vitrification thereof on forming a deposition layer.
Claim 17
Dependent Claim
33 words
A method of producing an optical transmission line as defined in claim 10 characterized in that the vitrification of the finely divided particles is effected in one step on forming a deposition layer.
Claim 18
Dependent Claim
33 words
A method of producing an optical transmission line as defined in claim 11 characterized in that the vitrification of the finely divided particles is effected in one step on forming a deposition layer.
Claim 19
Dependent Claim
33 words
A method of producing an optical transmission line as defined in claim 12 characterized in that the vitrification of the finely divided particles is effected in one step on forming a deposition layer.
Claim 20
Dependent Claim
58 words
A method of producing an optical transmission line as defined in claim 4 characterized by inserting the first cylinder into the second cylinder, melting them under heating, and crushing the clearance within said first cylinder and that between said first cylinder and said second cylinder on spinning thus to form a fiber having cross section without clearance therein.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |