Wavelength-division multiplexing optical communication apparatus and method therefor
US5745613A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1996 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Dec 6, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wavelength division-multiplexing optical communication apparatus and method includes a plurality of modulators for respectively modulating the intensity of a plurality of light rays, each having a different wavelength from one another, with a data signal from a signal source, a wavelength division-multiplexer for combining the light from the modulators, fiber optics for transmitting light from the wavelength division multiple and a wavelength division-multiplexed light receiver for separating the light from the transmission path fiber optics by wavelength (and receiving the separated light, respectively. The light modulators control or select a magnitude of the phase modulation caused at the time of intensity modulation, and the modulator for each light wavelength is separately controlled and selected for the operating point, so as to cause a phase modulation component which minimizes the waveform distortion after transmission through the transmission path fiber optics. Hence, the apparatus is not limited in its wavelength range or transmission distance caused by waveform distortion due to the wavelength dependency of dispersion of transmission path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.