JPS5652706A - Single mode optical fiber with intermediate layer - Google Patents
Single mode optical fiber with intermediate layerInfo
- Publication number
- JPS5652706A JPS5652706A JP13045279A JP13045279A JPS5652706A JP S5652706 A JPS5652706 A JP S5652706A JP 13045279 A JP13045279 A JP 13045279A JP 13045279 A JP13045279 A JP 13045279A JP S5652706 A JPS5652706 A JP S5652706A
- Authority
- JP
- Japan
- Prior art keywords
- refractive index
- clad
- intermediate layer
- core
- optical fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE:To expand a band width of transmittable light and improve transmission characteristics by providing an intermediate layer of a refractive index smaller than that of a core and a clad between the core and the clad. CONSTITUTION:An intermediate layer 3 having a refractive index n3 smaller than refractive indexes n1, n2 is provided between a core 1 having the refractive index n1 and a clad 2 having the refractive index n2 enclosing this, and these are so constituted that the refractive index difference DELTA1 between the core 1 and the clad 2 and the refractive index difference DELTA2 between the intermediate layer 3 and the clad 2 become mutually equal and of opposite polarities. With such constitution, the entire dispersion is made <=+ or -1ps/Km/nm in a wide band including the wavelengths at which the transmission losses of a quartz optical fiber becomes minimum; therefore, super wide band and super long distance transmission can be performed by WDM (wavelength multiplexing).
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54130452A JPS583206B2 (en) | 1979-10-08 | 1979-10-08 | Single mode optical fiber with intermediate layer |
CA361,298A CA1124119A (en) | 1979-10-08 | 1980-10-01 | Single mode optical fibers |
US06/192,704 US4372647A (en) | 1979-10-08 | 1980-10-01 | Single mode optical fibers |
DE8080106090T DE3071570D1 (en) | 1979-10-08 | 1980-10-07 | Single mode optical fibers |
EP80106090A EP0026937B1 (en) | 1979-10-08 | 1980-10-07 | Single mode optical fibers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54130452A JPS583206B2 (en) | 1979-10-08 | 1979-10-08 | Single mode optical fiber with intermediate layer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5652706A true JPS5652706A (en) | 1981-05-12 |
JPS583206B2 JPS583206B2 (en) | 1983-01-20 |
Family
ID=15034564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54130452A Expired JPS583206B2 (en) | 1979-10-08 | 1979-10-08 | Single mode optical fiber with intermediate layer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS583206B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5720707A (en) * | 1980-07-14 | 1982-02-03 | Nippon Telegr & Teleph Corp <Ntt> | Single mode optical fiber with groove having different refractive index |
JPS607407A (en) * | 1983-06-28 | 1985-01-16 | Sumitomo Electric Ind Ltd | Optical fiber and its manufacture |
JPH03100804U (en) * | 1981-09-03 | 1991-10-22 | ||
US5790292A (en) * | 1995-01-13 | 1998-08-04 | Fujitsu Limited | Optical fiber transmission line |
EP2135122A1 (en) * | 2007-03-15 | 2009-12-23 | Liekki OY | Optical fiber structure and a method of producing thereof |
JP2010044426A (en) * | 1999-01-04 | 2010-02-25 | Alcatel-Lucent | Optical fiber with low slope of wavelength dispersion |
WO2013099555A1 (en) * | 2011-12-28 | 2013-07-04 | 住友電気工業株式会社 | Multicore optical fiber |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4976538A (en) * | 1972-11-25 | 1974-07-24 | ||
JPS4990145A (en) * | 1972-12-27 | 1974-08-28 | ||
JPS5015565A (en) * | 1973-06-07 | 1975-02-19 | ||
JPS50131535A (en) * | 1974-04-03 | 1975-10-17 |
-
1979
- 1979-10-08 JP JP54130452A patent/JPS583206B2/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4976538A (en) * | 1972-11-25 | 1974-07-24 | ||
JPS4990145A (en) * | 1972-12-27 | 1974-08-28 | ||
JPS5015565A (en) * | 1973-06-07 | 1975-02-19 | ||
JPS50131535A (en) * | 1974-04-03 | 1975-10-17 |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6023321B2 (en) * | 1980-07-14 | 1985-06-07 | 日本電信電話株式会社 | Index grooved single mode optical fiber |
JPS5720707A (en) * | 1980-07-14 | 1982-02-03 | Nippon Telegr & Teleph Corp <Ntt> | Single mode optical fiber with groove having different refractive index |
JPH03100804U (en) * | 1981-09-03 | 1991-10-22 | ||
JPS607407A (en) * | 1983-06-28 | 1985-01-16 | Sumitomo Electric Ind Ltd | Optical fiber and its manufacture |
US5790292A (en) * | 1995-01-13 | 1998-08-04 | Fujitsu Limited | Optical fiber transmission line |
US5856881A (en) * | 1995-01-13 | 1999-01-05 | Fujitsu Limited | Optical fiber transmission line |
JP2010044426A (en) * | 1999-01-04 | 2010-02-25 | Alcatel-Lucent | Optical fiber with low slope of wavelength dispersion |
EP2135122A1 (en) * | 2007-03-15 | 2009-12-23 | Liekki OY | Optical fiber structure and a method of producing thereof |
JP2010521702A (en) * | 2007-03-15 | 2010-06-24 | リエッキ オイ | Optical fiber structure and manufacturing method thereof |
EP2135122A4 (en) * | 2007-03-15 | 2011-08-24 | Nlight Oy | Optical fiber structure and a method of producing thereof |
US8620126B2 (en) | 2007-03-15 | 2013-12-31 | Nlight Oy | Optical fiber structure and a method of producing thereof |
WO2013099555A1 (en) * | 2011-12-28 | 2013-07-04 | 住友電気工業株式会社 | Multicore optical fiber |
JP2013137430A (en) * | 2011-12-28 | 2013-07-11 | Sumitomo Electric Ind Ltd | Multi-core optical fiber |
US9547122B2 (en) | 2011-12-28 | 2017-01-17 | Sumitomo Electric Industries, Ltd. | Multi-core optical fiber |
Also Published As
Publication number | Publication date |
---|---|
JPS583206B2 (en) | 1983-01-20 |
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