JPS557745A - Photo switch - Google Patents

Photo switch

Info

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
Application number
JP8009478A
Other languages
Japanese (ja)
Inventor
Kenji Tatsumi
Toshio Takei
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8009478A priority Critical patent/JPS557745A/en
Publication of JPS557745A publication Critical patent/JPS557745A/en
Pending legal-status Critical Current

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  • 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
JP8009478A 1978-06-30 1978-06-30 Photo switch Pending JPS557745A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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

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