GB8614403D0 - Optical telecommunication systems - Google Patents
Optical telecommunication systemsInfo
- Publication number
- GB8614403D0 GB8614403D0 GB8614403A GB8614403A GB8614403D0 GB 8614403 D0 GB8614403 D0 GB 8614403D0 GB 8614403 A GB8614403 A GB 8614403A GB 8614403 A GB8614403 A GB 8614403A GB 8614403 D0 GB8614403 D0 GB 8614403D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- wavelength
- point
- telecommunication systems
- optical telecommunication
- 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
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0226—Fixed carrier allocation, e.g. according to service
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
- H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
- H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
- H04J14/0245—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU
- H04J14/0246—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU using one wavelength per ONU
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
- H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
- H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
- H04J14/0249—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU
- H04J14/025—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU using one wavelength per ONU, e.g. for transmissions from-ONU-to-OLT or from-ONU-to-ONU
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0278—WDM optical network architectures
- H04J14/028—WDM bus architectures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0278—WDM optical network architectures
- H04J14/0283—WDM ring architectures
Abstract
In an optical transmission system, e.g. of the ring or bus type, the same optical transmission path is used to convey both wavelength-division- multiplexed (WDM) light and light for point-to-point links. In one example the WDM light is centred on a wavelength of 1.5 mu m, and the point-to-point links use light at 1.3 mu m. At the nodes wavelength-selective optical couplers (1,2,3,4) are used to couple or connect the receivers and the transmitters to the transmission paths. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8614403A GB2191645B (en) | 1986-06-13 | 1986-06-13 | Optical telecommunication systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8614403A GB2191645B (en) | 1986-06-13 | 1986-06-13 | Optical telecommunication systems |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8614403D0 true GB8614403D0 (en) | 1986-07-16 |
GB2191645A GB2191645A (en) | 1987-12-16 |
GB2191645B GB2191645B (en) | 1990-09-05 |
Family
ID=10599407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8614403A Expired - Fee Related GB2191645B (en) | 1986-06-13 | 1986-06-13 | Optical telecommunication systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2191645B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0712230B2 (en) * | 1988-07-18 | 1995-02-08 | 富士通株式会社 | Optical switching system |
GB2232548A (en) * | 1989-04-25 | 1990-12-12 | British Telecomm | An optical network and a method of using the network |
US5532864A (en) * | 1995-06-01 | 1996-07-02 | Ciena Corporation | Optical monitoring channel for wavelength division multiplexed optical communication system |
JP3463717B2 (en) * | 1995-08-24 | 2003-11-05 | 三菱電機株式会社 | WDM optical transmission apparatus and WDM optical transmission system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3501640A (en) * | 1967-01-13 | 1970-03-17 | Ibm | Optical communication system |
IT1109751B (en) * | 1978-01-31 | 1985-12-23 | Nippon Telegraph & Telephone | OPTICAL MULTIPLIER AND DEMULTIPLATOR |
DE3044657A1 (en) * | 1980-11-27 | 1982-07-08 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | "SERVICE-INTEGRATED DIGITAL TRANSMISSION SYSTEM" |
DE3044605A1 (en) * | 1980-11-27 | 1982-06-24 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | "SERVICE-INTEGRATED DIGITAL TRANSMISSION SYSTEM" |
GB2105544B (en) * | 1981-09-01 | 1985-03-27 | Standard Telephones Cables Ltd | Multiplexing of optical signals |
FR2553243B1 (en) * | 1983-10-11 | 1990-03-30 | Lignes Telegraph Telephon | WAVELENGTH OPTICAL WAVELENGTH MULTIPLEXER-DEMULTIPLEXER FOR BIDIRECTIONAL LINK |
JPS60184216A (en) * | 1984-03-02 | 1985-09-19 | Oki Electric Ind Co Ltd | Hybrid optical multiplexer/demultiplexer |
-
1986
- 1986-06-13 GB GB8614403A patent/GB2191645B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2191645B (en) | 1990-09-05 |
GB2191645A (en) | 1987-12-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |