IT1299269B1 - Sistema di comunicazione ottica a multiplazione a divisione di lunghezza d'onda, per la trasmissione di segnali ottici con livelli - Google Patents
Sistema di comunicazione ottica a multiplazione a divisione di lunghezza d'onda, per la trasmissione di segnali ottici con livelliInfo
- Publication number
- IT1299269B1 IT1299269B1 IT98MI001078A ITMI981078A IT1299269B1 IT 1299269 B1 IT1299269 B1 IT 1299269B1 IT 98MI001078 A IT98MI001078 A IT 98MI001078A IT MI981078 A ITMI981078 A IT MI981078A IT 1299269 B1 IT1299269 B1 IT 1299269B1
- Authority
- IT
- Italy
- Prior art keywords
- multiplation
- levels
- transmission
- communication system
- wave length
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title 2
- 230000005540 biological transmission Effects 0.000 title 1
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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/293—Signal power control
- H04B10/294—Signal power control in a multiwavelength system, e.g. gain equalisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0221—Power control, e.g. to keep the total optical power constant
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optical Communication System (AREA)
- Lasers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9143114A JPH10322313A (ja) | 1997-05-16 | 1997-05-16 | 波長多重伝送装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
ITMI981078A1 ITMI981078A1 (it) | 1999-11-15 |
IT1299269B1 true IT1299269B1 (it) | 2000-02-29 |
Family
ID=15331247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT98MI001078A IT1299269B1 (it) | 1997-05-16 | 1998-05-15 | Sistema di comunicazione ottica a multiplazione a divisione di lunghezza d'onda, per la trasmissione di segnali ottici con livelli |
Country Status (4)
Country | Link |
---|---|
US (1) | US6271948B1 (it) |
JP (1) | JPH10322313A (it) |
FR (1) | FR2763449A1 (it) |
IT (1) | IT1299269B1 (it) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010048799A1 (en) * | 1998-05-21 | 2001-12-06 | F. David King | Optical communication system |
US6567196B1 (en) * | 1999-03-22 | 2003-05-20 | Ciena Corporation | Dense WDM optical multiplexer and demultiplexer |
JP3557134B2 (ja) * | 1999-09-28 | 2004-08-25 | 富士通株式会社 | 光送信装置、波長分割多重方式光信号生成方法およびチャネル増設方法 |
WO2002011337A1 (fr) * | 2000-07-31 | 2002-02-07 | Mitsubishi Denki Kabushiki Kaisha | Dispositif de multiplexage par division de longueurs d'ondes lumineuses |
JP3798642B2 (ja) * | 2001-03-26 | 2006-07-19 | 富士通株式会社 | Wdmネットワークの管理装置 |
US6708002B1 (en) * | 2002-01-16 | 2004-03-16 | Dorsal Networks, Inc. | Modular multiplexing/demultiplexing units in optical transmission systems |
JP5821302B2 (ja) * | 2011-06-10 | 2015-11-24 | 住友電気工業株式会社 | 通信システム |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4900917A (en) * | 1988-07-15 | 1990-02-13 | American Telephone And Telegraph Company, At&T Bell Laboratories | Polarization insensitive optical communication device utilizing optical preamplification |
JPH04101124A (ja) | 1990-08-21 | 1992-04-02 | Sumitomo Electric Ind Ltd | 光信号増幅器 |
GB9401488D0 (en) * | 1994-01-26 | 1994-03-23 | British Telecomm | Optical communications |
CA2139957C (en) * | 1994-02-18 | 1999-02-09 | Andrew R. Chraplyvy | Multi-channel optical fiber communication system |
FR2738698B1 (fr) * | 1995-09-08 | 1997-10-17 | Alcatel Nv | Procede et systeme d'egalisation des niveaux respectifs de puissance des canaux d'un signal optique spectralement multiplexe |
JPH09116493A (ja) | 1995-10-23 | 1997-05-02 | Nec Corp | 波長多重伝送システム |
JPH10173264A (ja) | 1996-12-09 | 1998-06-26 | Kokusai Denshin Denwa Co Ltd <Kdd> | 利得等化装置 |
-
1997
- 1997-05-16 JP JP9143114A patent/JPH10322313A/ja active Pending
-
1998
- 1998-05-14 US US09/078,574 patent/US6271948B1/en not_active Expired - Fee Related
- 1998-05-15 IT IT98MI001078A patent/IT1299269B1/it active IP Right Grant
- 1998-05-18 FR FR9806237A patent/FR2763449A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
FR2763449A1 (fr) | 1998-11-20 |
JPH10322313A (ja) | 1998-12-04 |
ITMI981078A1 (it) | 1999-11-15 |
US6271948B1 (en) | 2001-08-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted |