Optical waveguide amplifiers
US5636301A · kind A · utility
41Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1995 |
| Grant date | Jun 3, 1997 |
| Priority date | — |
| Expiry date | Jun 1, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical amplifier for use in a WDM transmission system has a circulator two of whose ports constitute the input and output ports of the amplifier, and to whose third port is connected an optically amplifying fibre. Bragg grating reflectors are formed at specific intervals along this fibre chosen such that each WDM channel is reflected back to the circulator at a distance in inverse proportion to the gain per unit length experienced by that channel in the amplifier fibre, whereby all channels are amplified by the amplifier to the same extent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.