JPS6141182B2 - - Google Patents

Info

Publication number
JPS6141182B2
JPS6141182B2 JP55151189A JP15118980A JPS6141182B2 JP S6141182 B2 JPS6141182 B2 JP S6141182B2 JP 55151189 A JP55151189 A JP 55151189A JP 15118980 A JP15118980 A JP 15118980A JP S6141182 B2 JPS6141182 B2 JP S6141182B2
Authority
JP
Japan
Prior art keywords
light emitting
station
emitting element
monitoring
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.)
Expired
Application number
JP55151189A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5775040A (en
Inventor
Koji Iijima
Teruyoshi Mita
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55151189A priority Critical patent/JPS5775040A/ja
Publication of JPS5775040A publication Critical patent/JPS5775040A/ja
Publication of JPS6141182B2 publication Critical patent/JPS6141182B2/ja
Granted legal-status Critical Current

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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • 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
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H04B10/69—Electrical arrangements in the receiver
    • H04B10/693—Arrangements for optimizing the preamplifier in the receiver
    • H04B10/6931—Automatic gain control of the preamplifier

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Optical Communication System (AREA)
JP55151189A 1980-10-28 1980-10-28 Supervisory system for optical communication loop network Granted JPS5775040A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55151189A JPS5775040A (en) 1980-10-28 1980-10-28 Supervisory system for optical communication loop network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55151189A JPS5775040A (en) 1980-10-28 1980-10-28 Supervisory system for optical communication loop network

Publications (2)

Publication Number Publication Date
JPS5775040A JPS5775040A (en) 1982-05-11
JPS6141182B2 true JPS6141182B2 (enrdf_load_stackoverflow) 1986-09-12

Family

ID=15513216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55151189A Granted JPS5775040A (en) 1980-10-28 1980-10-28 Supervisory system for optical communication loop network

Country Status (1)

Country Link
JP (1) JPS5775040A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9106181D0 (en) * 1991-03-22 1991-05-08 British Telecomm Photonic amplifier
US5220581A (en) * 1991-03-28 1993-06-15 International Business Machines Corporation Digital data link performance monitor
JPH0730503A (ja) * 1993-07-14 1995-01-31 Nec Corp 光直接増幅中継器

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51123002A (en) * 1975-04-18 1976-10-27 Nec Corp Optical communications system

Also Published As

Publication number Publication date
JPS5775040A (en) 1982-05-11

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