JPS52146257A - Optical repeater margin measuring method - Google Patents

Optical repeater margin measuring method

Info

Publication number
JPS52146257A
JPS52146257A JP6226176A JP6226176A JPS52146257A JP S52146257 A JPS52146257 A JP S52146257A JP 6226176 A JP6226176 A JP 6226176A JP 6226176 A JP6226176 A JP 6226176A JP S52146257 A JPS52146257 A JP S52146257A
Authority
JP
Japan
Prior art keywords
measuring method
optical repeater
margin measuring
margin
modulated
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
JP6226176A
Other languages
Japanese (ja)
Inventor
Risuke Shimodaira
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP6226176A priority Critical patent/JPS52146257A/en
Publication of JPS52146257A publication Critical patent/JPS52146257A/en
Pending legal-status Critical Current

Links

Landscapes

  • Testing Of Optical Devices Or Fibers (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE: To perform accurate measurement of S/N margins by adding modulated or non-modulated light to an input optical signal by means of a coupling means so that repeating operation is put in an imperfect state.
COPYRIGHT: (C)1977,JPO&Japio
JP6226176A 1976-05-31 1976-05-31 Optical repeater margin measuring method Pending JPS52146257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6226176A JPS52146257A (en) 1976-05-31 1976-05-31 Optical repeater margin measuring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6226176A JPS52146257A (en) 1976-05-31 1976-05-31 Optical repeater margin measuring method

Publications (1)

Publication Number Publication Date
JPS52146257A true JPS52146257A (en) 1977-12-05

Family

ID=13195017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6226176A Pending JPS52146257A (en) 1976-05-31 1976-05-31 Optical repeater margin measuring method

Country Status (1)

Country Link
JP (1) JPS52146257A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056304A2 (en) * 1981-01-08 1982-07-21 Hewlett-Packard Limited Method and apparatus for measuring the frequency response of an element or elements in a digital transmission path
US5282074A (en) * 1992-01-31 1994-01-25 Fujitsu Limited Optical amplification repeating system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056304A2 (en) * 1981-01-08 1982-07-21 Hewlett-Packard Limited Method and apparatus for measuring the frequency response of an element or elements in a digital transmission path
US5282074A (en) * 1992-01-31 1994-01-25 Fujitsu Limited Optical amplification repeating system

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