FI103236B1 - Valoviestintäjärjestelmä - Google Patents
ValoviestintäjärjestelmäInfo
- Publication number
- FI103236B1 FI103236B1 FI912962A FI912962A FI103236B1 FI 103236 B1 FI103236 B1 FI 103236B1 FI 912962 A FI912962 A FI 912962A FI 912962 A FI912962 A FI 912962A FI 103236 B1 FI103236 B1 FI 103236B1
- Authority
- FI
- Finland
- Prior art keywords
- communication system
- light communication
- light
- communication
- Prior art date
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
- H04B10/03—Arrangements for fault recovery
- H04B10/038—Arrangements for fault recovery using bypasses
-
- 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
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
-
- 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
- H04B10/27—Arrangements for networking
- H04B10/272—Star-type networks or tree-type networks
-
- 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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
-
- 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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computing Systems (AREA)
- Optical Communication System (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Lasers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16107790 | 1990-06-19 | ||
JP02161077A JP3100386B2 (ja) | 1990-06-19 | 1990-06-19 | 光通信システム |
Publications (4)
Publication Number | Publication Date |
---|---|
FI912962A0 FI912962A0 (fi) | 1991-06-18 |
FI912962A FI912962A (fi) | 1991-12-20 |
FI103236B1 true FI103236B1 (fi) | 1999-05-14 |
FI103236B FI103236B (fi) | 1999-05-14 |
Family
ID=15728191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI912962A FI103236B (fi) | 1990-06-19 | 1991-06-18 | Valoviestintäjärjestelmä |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0467080B1 (fi) |
JP (1) | JP3100386B2 (fi) |
AU (1) | AU632697B2 (fi) |
CA (1) | CA2044919C (fi) |
DE (1) | DE69125065T2 (fi) |
FI (1) | FI103236B (fi) |
NO (1) | NO308499B1 (fi) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9022681D0 (en) * | 1990-10-18 | 1990-11-28 | British Telecomm | Passive optical network |
CA2069567C (en) * | 1991-05-27 | 2001-10-30 | Kazunori Nakamura | Optical amplification apparatus |
IT1279126B1 (it) * | 1995-04-18 | 1997-12-04 | Sip | Amplificatore ottico bidirezionale a fibra attiva. |
GB9526176D0 (en) * | 1995-12-21 | 1996-02-21 | Stc Submarine Systems Ltd | System fibre break detection in systems using ropas |
JPH09261187A (ja) * | 1996-03-19 | 1997-10-03 | Fujitsu Ltd | 無中継光伝送システムのリモートアンプおよび障害点標定方法 |
JP3107033B2 (ja) | 1998-03-09 | 2000-11-06 | 日本電気株式会社 | 光増幅装置とこれを含む光伝送装置の伝送路破断点検出方法および光増幅装置を用いた双方向波長多重光伝送装置 |
EP2891256B1 (en) * | 2012-08-29 | 2018-05-02 | Telefonaktiebolaget LM Ericsson (publ) | Device for monitoring an optical fibre |
EP2965451A4 (en) * | 2013-03-05 | 2016-11-30 | Ericsson Telefon Ab L M | OPTICAL AMPLIFIER SYSTEM |
EP2819321A1 (en) * | 2013-06-27 | 2014-12-31 | Alcatel Lucent | Packet optical add drop multiplexing node for an optical ring network |
JP7424391B2 (ja) * | 2019-12-04 | 2024-01-30 | 日本電気株式会社 | 光ファイバセンシングシステム、中継装置及びセンシング方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS581859B2 (ja) * | 1975-02-14 | 1983-01-13 | 株式会社日立製作所 | ヒカリチユウケイキ |
JPS56140257U (fi) * | 1980-03-24 | 1981-10-23 | ||
JPS5991745A (ja) * | 1982-11-18 | 1984-05-26 | Yamatake Honeywell Co Ltd | 光通信用結合装置 |
JPS59188249A (ja) * | 1984-03-22 | 1984-10-25 | Hitachi Ltd | 光中継増幅器 |
JPH021631A (ja) * | 1988-06-09 | 1990-01-05 | Fujitsu Ltd | 光ケーブル通信方式 |
-
1990
- 1990-06-19 JP JP02161077A patent/JP3100386B2/ja not_active Expired - Lifetime
-
1991
- 1991-06-17 NO NO912327A patent/NO308499B1/no not_active IP Right Cessation
- 1991-06-18 CA CA002044919A patent/CA2044919C/en not_active Expired - Fee Related
- 1991-06-18 DE DE69125065T patent/DE69125065T2/de not_active Expired - Fee Related
- 1991-06-18 AU AU78488/91A patent/AU632697B2/en not_active Ceased
- 1991-06-18 FI FI912962A patent/FI103236B/fi active
- 1991-06-18 EP EP91109963A patent/EP0467080B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FI912962A0 (fi) | 1991-06-18 |
EP0467080B1 (en) | 1997-03-12 |
AU7848891A (en) | 1992-01-02 |
JP3100386B2 (ja) | 2000-10-16 |
FI912962A (fi) | 1991-12-20 |
DE69125065D1 (de) | 1997-04-17 |
CA2044919A1 (en) | 1991-12-20 |
NO308499B1 (no) | 2000-09-18 |
DE69125065T2 (de) | 1997-06-19 |
NO912327D0 (no) | 1991-06-17 |
EP0467080A1 (en) | 1992-01-22 |
AU632697B2 (en) | 1993-01-07 |
NO912327L (no) | 1991-12-20 |
FI103236B (fi) | 1999-05-14 |
CA2044919C (en) | 1996-06-11 |
JPH0451620A (ja) | 1992-02-20 |
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