JPH02306733A - Optical concentrator - Google Patents

Optical concentrator

Info

Publication number
JPH02306733A
JPH02306733A JP1126768A JP12676889A JPH02306733A JP H02306733 A JPH02306733 A JP H02306733A JP 1126768 A JP1126768 A JP 1126768A JP 12676889 A JP12676889 A JP 12676889A JP H02306733 A JPH02306733 A JP H02306733A
Authority
JP
Japan
Prior art keywords
optical
transmission line
optical signal
terminal equipments
change
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
JP1126768A
Other languages
Japanese (ja)
Inventor
Arata Ando
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP1126768A priority Critical patent/JPH02306733A/en
Publication of JPH02306733A publication Critical patent/JPH02306733A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To attain the connection or disconnection with an optical transmission line only with an optical signal by detecting the presence of a change in an optical signal outputted from a terminal equipment, deciding whether or not the connection with an optical network is implemented and applying the connection control between the terminal equipment and the optical network.
CONSTITUTION: When terminal equipments 3a, 3b fitted to an optical transmission line 5 are operated, optical signals 7a, 7b are outputted respectively and inputted to optical switches 11a, 11b and detection instruction sections 9a, 9b. The detection instruction sections 9a, 9b detect the presence of a change in the optical signal and when there is any change in the optical signal, the terminal equipments 3a, 3b are regarded to be in normal operation and the instruction is issued to the optical switches 11a, 11b so as to be connected to an optical transmission line 5. When no change exists in the optical signal, it is discriminated that a fault takes place in the terminal equipments 3a, 3b and the instruction is issued to be disconnected from the optical transmission line 5 and optical signals 7a, 7b are looped back to the terminal equipments 3a, 3b. Thus, the connection or disconnection between the optical transmission line 5 and the terminal equipments 3a, 3b with the optical signal only is implemented.
COPYRIGHT: (C)1990,JPO&Japio
JP1126768A 1989-05-22 1989-05-22 Optical concentrator Pending JPH02306733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1126768A JPH02306733A (en) 1989-05-22 1989-05-22 Optical concentrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1126768A JPH02306733A (en) 1989-05-22 1989-05-22 Optical concentrator

Publications (1)

Publication Number Publication Date
JPH02306733A true JPH02306733A (en) 1990-12-20

Family

ID=14943450

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1126768A Pending JPH02306733A (en) 1989-05-22 1989-05-22 Optical concentrator

Country Status (1)

Country Link
JP (1) JPH02306733A (en)

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