JPS54157003A - Polarization multiplex two-way optical transmission system - Google Patents
Polarization multiplex two-way optical transmission systemInfo
- Publication number
- JPS54157003A JPS54157003A JP6552178A JP6552178A JPS54157003A JP S54157003 A JPS54157003 A JP S54157003A JP 6552178 A JP6552178 A JP 6552178A JP 6552178 A JP6552178 A JP 6552178A JP S54157003 A JPS54157003 A JP S54157003A
- Authority
- JP
- Japan
- Prior art keywords
- optical signals
- lens
- optical
- polarizor
- led
- 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 prevent crosstalk and the attenuation of energy to separate optical signals, by separating light pathes or optical signal on a basis of thier directions so that optical signals issued by the optical signal source of the other side may be led to photo detectors mutually. CONSTITUTION:The ray issued by optical signal source 1 is adjusted to parallel beams by lens 4 and are connected to optical fiber 3 through polarizor 8 by lens 5, and optical signals transmitted through fiber 3 are connected to polarizor 8 in the other side by lens 5 and are focused through polarizor 8 by lens 7 and are led to photo detector 2. Here, two-way optical signals are so arranged that polarization surface may be orthogonal to each other when they are transmitted through fiber 3, and light pathes of optical signals can be separated by their directions, and therefore, optical signals issued by optical signal source 1 of the other side are led to photo detectors 2 mutually. As a result, the attenuation of energy is not received because two-way optical signals are separated, and crosstalk accompanied with separation can be prevented.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6552178A JPS54157003A (en) | 1978-05-31 | 1978-05-31 | Polarization multiplex two-way optical transmission system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6552178A JPS54157003A (en) | 1978-05-31 | 1978-05-31 | Polarization multiplex two-way optical transmission system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54157003A true JPS54157003A (en) | 1979-12-11 |
Family
ID=13289403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6552178A Pending JPS54157003A (en) | 1978-05-31 | 1978-05-31 | Polarization multiplex two-way optical transmission system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54157003A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56116336A (en) * | 1980-02-19 | 1981-09-12 | Matsushita Electric Ind Co Ltd | Overall duplicate communication system |
US4566761A (en) * | 1984-09-13 | 1986-01-28 | Gte Laboratories Incorporated | Birefringent optical wavelength multiplexer/demultiplexer |
US4685773A (en) * | 1984-09-13 | 1987-08-11 | Gte Laboratories Incorporated | Birefringent optical multiplexer with flattened bandpass |
US4744075A (en) * | 1987-04-02 | 1988-05-10 | Gte Laboratories Incorporated | Multichannel wavelength multiplexer/demultiplexer |
US4973124A (en) * | 1988-12-22 | 1990-11-27 | Nec Corporation | Wavelength drop-and-insert device |
US6580535B1 (en) | 1999-12-28 | 2003-06-17 | Telefonaktiebolaget Lm Ericsson (Publ) | Polarization division multiplexing in optical data transmission systems |
CN110620655A (en) * | 2019-05-06 | 2019-12-27 | 科大国盾量子技术股份有限公司 | Polarization multiplexing bidirectional quantum key distribution method and system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51132901A (en) * | 1975-05-15 | 1976-11-18 | Nippon Telegr & Teleph Corp <Ntt> | Orthogonal polarization transfer method |
-
1978
- 1978-05-31 JP JP6552178A patent/JPS54157003A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51132901A (en) * | 1975-05-15 | 1976-11-18 | Nippon Telegr & Teleph Corp <Ntt> | Orthogonal polarization transfer method |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56116336A (en) * | 1980-02-19 | 1981-09-12 | Matsushita Electric Ind Co Ltd | Overall duplicate communication system |
US4566761A (en) * | 1984-09-13 | 1986-01-28 | Gte Laboratories Incorporated | Birefringent optical wavelength multiplexer/demultiplexer |
US4685773A (en) * | 1984-09-13 | 1987-08-11 | Gte Laboratories Incorporated | Birefringent optical multiplexer with flattened bandpass |
US4744075A (en) * | 1987-04-02 | 1988-05-10 | Gte Laboratories Incorporated | Multichannel wavelength multiplexer/demultiplexer |
US4973124A (en) * | 1988-12-22 | 1990-11-27 | Nec Corporation | Wavelength drop-and-insert device |
US6580535B1 (en) | 1999-12-28 | 2003-06-17 | Telefonaktiebolaget Lm Ericsson (Publ) | Polarization division multiplexing in optical data transmission systems |
CN110620655A (en) * | 2019-05-06 | 2019-12-27 | 科大国盾量子技术股份有限公司 | Polarization multiplexing bidirectional quantum key distribution method and system |
CN110620655B (en) * | 2019-05-06 | 2023-01-31 | 科大国盾量子技术股份有限公司 | Polarization multiplexing bidirectional quantum key distribution method and system |
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