JPS5775040A - Supervisory system for optical communication loop network - Google Patents
Supervisory system for optical communication loop networkInfo
- Publication number
- JPS5775040A JPS5775040A JP55151189A JP15118980A JPS5775040A JP S5775040 A JPS5775040 A JP S5775040A JP 55151189 A JP55151189 A JP 55151189A JP 15118980 A JP15118980 A JP 15118980A JP S5775040 A JPS5775040 A JP S5775040A
- Authority
- JP
- Japan
- Prior art keywords
- alarm
- signal
- circuit
- station
- 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.)
- Granted
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)
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 true JPS5775040A (en) | 1982-05-11 |
JPS6141182B2 JPS6141182B2 (ja) | 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 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
AU661298B2 (en) * | 1991-03-22 | 1995-07-20 | Ipg Photonics Corporation | Photonic amplifier |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51123002A (en) * | 1975-04-18 | 1976-10-27 | Nec Corp | Optical communications system |
-
1980
- 1980-10-28 JP JP55151189A patent/JPS5775040A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51123002A (en) * | 1975-04-18 | 1976-10-27 | Nec Corp | Optical communications system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU661298B2 (en) * | 1991-03-22 | 1995-07-20 | Ipg Photonics Corporation | 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 |
Also Published As
Publication number | Publication date |
---|---|
JPS6141182B2 (ja) | 1986-09-12 |
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