JPS557745A - Photo switch - Google Patents
Photo switchInfo
- Publication number
- JPS557745A JPS557745A JP8009478A JP8009478A JPS557745A JP S557745 A JPS557745 A JP S557745A JP 8009478 A JP8009478 A JP 8009478A JP 8009478 A JP8009478 A JP 8009478A JP S557745 A JPS557745 A JP S557745A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- converted
- optical fiber
- electric signal
- side optical
- 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
Landscapes
- Optical Communication System (AREA)
Abstract
PURPOSE: To realize high speed switching operation and liberate from necessity to couple the optical fibers at high precision, without using mechanical moving parts, by changing over signals electrically when transmitting data through optical fibers.
CONSTITUTION: The light signal propagated from an entrance side optical fiber 8 is converted into an electric signal by a photo detector 9, and amplified 10 to be inputted into switch circuits 13, 14. When a control signal to connect the switch circuit 13 and disconnect 14 is delivered from a control circuit 17, the electric signal from the amplifier 10 is connected only to the light emitting device 11 through a driving circuit 15 to be converted to an optical signal, which is guided into an exit side optical fiber 18. In the reverse case, the electric signal from the amplifier 10 is connected only to the light emitting device 12 to be converted to an optical signal, which is then guided into an exit side optical fiber 19. Thus, signals are changed over electrically.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8009478A JPS557745A (en) | 1978-06-30 | 1978-06-30 | Photo switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8009478A JPS557745A (en) | 1978-06-30 | 1978-06-30 | Photo switch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS557745A true JPS557745A (en) | 1980-01-19 |
Family
ID=13708599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8009478A Pending JPS557745A (en) | 1978-06-30 | 1978-06-30 | Photo switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS557745A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS617739A (en) * | 1984-06-22 | 1986-01-14 | Nec Corp | Optical switching circuit |
JPS6256094A (en) * | 1985-09-03 | 1987-03-11 | Video Res:Kk | Detecting system for picture recording/reproducing data of video tape recorder |
JPS62102698A (en) * | 1985-10-29 | 1987-05-13 | Nippon Tv Housoumou Kk | Method and apparatus for displaying program rating |
-
1978
- 1978-06-30 JP JP8009478A patent/JPS557745A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS617739A (en) * | 1984-06-22 | 1986-01-14 | Nec Corp | Optical switching circuit |
JPS6256094A (en) * | 1985-09-03 | 1987-03-11 | Video Res:Kk | Detecting system for picture recording/reproducing data of video tape recorder |
JPS62102698A (en) * | 1985-10-29 | 1987-05-13 | Nippon Tv Housoumou Kk | Method and apparatus for displaying program rating |
JPH0317437B2 (en) * | 1985-10-29 | 1991-03-08 | Nippon Television Network |
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