JPS57174946A - Bidirectional optical transmission method - Google Patents
Bidirectional optical transmission methodInfo
- Publication number
- JPS57174946A JPS57174946A JP56058621A JP5862181A JPS57174946A JP S57174946 A JPS57174946 A JP S57174946A JP 56058621 A JP56058621 A JP 56058621A JP 5862181 A JP5862181 A JP 5862181A JP S57174946 A JPS57174946 A JP S57174946A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- polarization
- plane
- laser
- oscillated
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2589—Bidirectional transmission
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
PURPOSE:To enable to realize bidirectional optical transmission with low loss, by spatially separating two linearly polarized optical beam at an input terminal of an optical fiber without inducing any loss. CONSTITUTION:The plane of polarization of an oscillated optical beam of a semiconductor laser 1 is matched to one plane of polarization of a polarized beam split prism 11. In this case, the oscillated optical beam from the laser 1 is made parallel at a lens 5 and transmitted to the prism 11 in the plane of polarization in parallel with this paper. This plane of polarization is matched to e.g., the major axis of an index ellipsoid of an optical fiber 13 and introduced to the fiber 13 via a lens 7. Similarly, at another end of the fiber 13, the plane of polarization of oscillated light from a semiconductor laser 2 is adjusted so as to match with minor axis of the index ellipsoid of the fiber 13. Thus, the polarized light incident to the fiber 13 from the laser 1 keeps linearity also at the emission side and is made incident to a photodetector 4 straightforward without being incident to the laser 2, and similarly the oscillated light of the laser 2 is made incident to a photodetector 3.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56058621A JPS57174946A (en) | 1981-04-20 | 1981-04-20 | Bidirectional optical transmission method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56058621A JPS57174946A (en) | 1981-04-20 | 1981-04-20 | Bidirectional optical transmission method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57174946A true JPS57174946A (en) | 1982-10-27 |
Family
ID=13089634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56058621A Pending JPS57174946A (en) | 1981-04-20 | 1981-04-20 | Bidirectional optical transmission method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57174946A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61170153A (en) * | 1985-01-23 | 1986-07-31 | Seiko Instr & Electronics Ltd | Single line two-way optical communication device |
JPS61295527A (en) * | 1985-06-25 | 1986-12-26 | Seiko Instr & Electronics Ltd | Single-core bidirectional optical device |
JP2004112711A (en) * | 2002-09-20 | 2004-04-08 | Japan Science & Technology Corp | Bidirectional optical communication system |
-
1981
- 1981-04-20 JP JP56058621A patent/JPS57174946A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61170153A (en) * | 1985-01-23 | 1986-07-31 | Seiko Instr & Electronics Ltd | Single line two-way optical communication device |
JPS61295527A (en) * | 1985-06-25 | 1986-12-26 | Seiko Instr & Electronics Ltd | Single-core bidirectional optical device |
JP2004112711A (en) * | 2002-09-20 | 2004-04-08 | Japan Science & Technology Corp | Bidirectional optical communication system |
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