CA2239913A1 - Wdm network with control wavelength - Google Patents
Wdm network with control wavelengthInfo
- Publication number
- CA2239913A1 CA2239913A1 CA2239913A CA2239913A CA2239913A1 CA 2239913 A1 CA2239913 A1 CA 2239913A1 CA 2239913 A CA2239913 A CA 2239913A CA 2239913 A CA2239913 A CA 2239913A CA 2239913 A1 CA2239913 A1 CA 2239913A1
- Authority
- CA
- Canada
- Prior art keywords
- wavelength
- lambda
- time slot
- signalling
- station
- 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
Landscapes
- Optical Communication System (AREA)
Abstract
A wavelength division multiplex communication system comprises a head station and a plurality of terminal stations interconnected by an optical fibre cable. The head station transmits continuous wave modulated wavelengths (.lambda.1, and .lambda.k), a signalling wavelength (.lambda. 0) which is used to indicate, in each time slot, which wavelengths in the following time slot are available for transmission. Each terminal station is arranged to receive the signalling wavelength, to determine therefrom whether the next time slot contains any data packets for that terminal station and, if so, to receive the packets.
The terminal station is arranged, if it has a data packet to transmit, to determine from the signalling wavelength whether the next time slot already contains data packets for the destination station and, if so, to avoid data collision by not transmitting its own data packet. The terminal station then determines a free wavelength (.lambda.
q) from the signalling wavelength (.lambda. 0) modulates the free wavelength with the data packet it is to transmit, and modifies the signalling wavelength.
The terminal station is arranged, if it has a data packet to transmit, to determine from the signalling wavelength whether the next time slot already contains data packets for the destination station and, if so, to avoid data collision by not transmitting its own data packet. The terminal station then determines a free wavelength (.lambda.
q) from the signalling wavelength (.lambda. 0) modulates the free wavelength with the data packet it is to transmit, and modifies the signalling wavelength.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9401488.3 | 1994-01-26 | ||
GB9401488A GB9401488D0 (en) | 1994-01-26 | 1994-01-26 | Optical communications |
CA002181811A CA2181811C (en) | 1994-01-26 | 1995-01-26 | Wdm network with control wavelength |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002181811A Division CA2181811C (en) | 1994-01-26 | 1995-01-26 | Wdm network with control wavelength |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2239913A1 true CA2239913A1 (en) | 1995-08-03 |
CA2239913C CA2239913C (en) | 2000-10-24 |
Family
ID=25678574
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002239913A Expired - Fee Related CA2239913C (en) | 1994-01-26 | 1995-01-26 | Wdm network with control wavelength |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2239913C (en) |
-
1995
- 1995-01-26 CA CA002239913A patent/CA2239913C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2239913C (en) | 2000-10-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2181811A1 (en) | Wdm network with control wavelength | |
CA2121955A1 (en) | Communication Method in Network System for Performing Information Transmission Among Terminal Equipments Using Light Beams of a Plurality of Wavelengths, Terminal Equipment Used in the Method, and Network System Using the Method | |
Maier et al. | The audacity of fiber-wireless (FiWi) networks | |
RU2048703C1 (en) | Duplex light-guide video communication system | |
CA2042164A1 (en) | A communication network | |
EP0629058B1 (en) | Optical wavelength selection control system in optical networks | |
CA2308482A1 (en) | Optical communication network | |
CN1011277B (en) | Protocols for very high-speed optical lens | |
CA2244385A1 (en) | Optical node system for a ring architecture and method thereof | |
US5854699A (en) | Multiplexed subcarrier control in wavelength division multiplexed broadband networks | |
WO1998057440A3 (en) | Data transmission over a power line communications system | |
JPH04334134A (en) | Optical communication equipment | |
US5612806A (en) | Acknowledgement using subcarrier multiplexed tones | |
EP0289306A3 (en) | Optical communications apparatus | |
HU212549B (en) | Method for two-way data transmission and communication system for realizing said method | |
CA2176682A1 (en) | Optical Communication Method for Performing Communication Using a Plurality of Wavelengths, and Optical Communication System for Performing Communication Using a Plurality of Wavelengths | |
JPH0832523A (en) | Interterminal communication provision system of communication network | |
WO2004070429A3 (en) | Periodic optical packet switching | |
CA2239913A1 (en) | Wdm network with control wavelength | |
CA2272786A1 (en) | Low-latency high-bandwidth tdm-wdm network architecture | |
WO1999025135A3 (en) | Method and device for transmitting data using mobile data transmission devices | |
CA2392376A1 (en) | Optical communications system | |
JPS6130139A (en) | Optical transmission system | |
JPS6253033A (en) | Optical fiber two-way transmission system | |
JPH03283725A (en) | Radio communication system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |