Wavelength controlling method enabling use of wider wavelength range and network system using the method
US6101014A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 1997 |
| Grant date | Aug 8, 2000 |
| Priority date | — |
| Expiry date | May 23, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0224
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of controlling a wavelength of emitted light in a network system having a light transmission line for transmitting light, light-emitting means having a plurality of discrete continuous-wavelength-tunable ranges and emitting the light to the light transmission line, and detecting means for detecting light on the light transmission line, includes detecting, by the detecting means, a wavelength falling within one of the plurality of continuous-wavelength-tunable ranges of the light-emitting means which does not interfere with any wavelengths of light being transmitted on the light transmission line, and emitting, to the light transmission line, light from the light-emitting means at the wavelength detected in said detecting step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.