JPS5655909A - Optical fiber for optical communication and optical transmission apparatus - Google Patents
Optical fiber for optical communication and optical transmission apparatusInfo
- Publication number
- JPS5655909A JPS5655909A JP2323379A JP2323379A JPS5655909A JP S5655909 A JPS5655909 A JP S5655909A JP 2323379 A JP2323379 A JP 2323379A JP 2323379 A JP2323379 A JP 2323379A JP S5655909 A JPS5655909 A JP S5655909A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- refractive indexes
- transmission line
- central axis
- 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
Landscapes
- Optical Communication System (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
PURPOSE:To make the mean velocities of the light wave advancing along the axis and the light wave advancing zigzag approximately the same by specifying the refractive indexes for an optical fiber of the distribution in which the refractive indexes are high along the central axis and decrease gradually as they go further from the axis. CONSTITUTION:Light emitted from a luminous body A such as semiconductor laser having undergone pulse or amplitude modulation is entered via a lens B from one end into a transmission line C using an optical fiber having the part in which the refractive indexes n conform to n=n0{1-1/2(x/L)<2>} and the part conforming to the distribution other than this where the refractive indexes on the central axis are defined as n0, distance from the central axis as x and a constant as L. The light emitted from the transmission line C enters a detector E directly or via a lens D, but since there is virtually no difference in the advance speed of the light in the transmission line, the degradation of waveform is extremely small and the signal may be detected well.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2323379A JPS5655909A (en) | 1979-02-27 | 1979-02-27 | Optical fiber for optical communication and optical transmission apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2323379A JPS5655909A (en) | 1979-02-27 | 1979-02-27 | Optical fiber for optical communication and optical transmission apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5655909A true JPS5655909A (en) | 1981-05-16 |
JPH0211881B2 JPH0211881B2 (en) | 1990-03-16 |
Family
ID=12104890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2323379A Granted JPS5655909A (en) | 1979-02-27 | 1979-02-27 | Optical fiber for optical communication and optical transmission apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5655909A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4920856A (en) * | 1987-07-30 | 1990-05-01 | Brueninghaus Hydraulik Gmbh | Axial piston machine of the swashplate or bent axis type having slot control and pressure balancing passages |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5037445A (en) * | 1973-06-18 | 1975-04-08 | ||
JPS5315841A (en) * | 1976-07-26 | 1978-02-14 | Western Electric Co | Circular symmetry optical fiber waveguide path |
JPS5339141A (en) * | 1976-09-21 | 1978-04-10 | Corning Glass Works | Optical waveguide tube |
JPS5381136A (en) * | 1976-12-27 | 1978-07-18 | Nippon Telegr & Teleph Corp <Ntt> | Fiber for optical transmission |
-
1979
- 1979-02-27 JP JP2323379A patent/JPS5655909A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5037445A (en) * | 1973-06-18 | 1975-04-08 | ||
JPS5315841A (en) * | 1976-07-26 | 1978-02-14 | Western Electric Co | Circular symmetry optical fiber waveguide path |
JPS5339141A (en) * | 1976-09-21 | 1978-04-10 | Corning Glass Works | Optical waveguide tube |
JPS5381136A (en) * | 1976-12-27 | 1978-07-18 | Nippon Telegr & Teleph Corp <Ntt> | Fiber for optical transmission |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4920856A (en) * | 1987-07-30 | 1990-05-01 | Brueninghaus Hydraulik Gmbh | Axial piston machine of the swashplate or bent axis type having slot control and pressure balancing passages |
Also Published As
Publication number | Publication date |
---|---|
JPH0211881B2 (en) | 1990-03-16 |
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