Burst mode optical receiver using two amplifiers having different bandwidth
US6362911B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1998 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Dec 15, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/695
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A burst mode optical receiver using two amplifiers having different bandwidth. The receiver includes an optical coupler separating an input optical signal into two parts and outputting the same, a delay circuit formed of a first optical fiber delaying an optical signal packet outputted through the optical coupler by a half of packet duration and a second optical fiber passing the optical signal packet without delay, and a first pre-amplifier having a high bandwidth for receiving an optical signal from the first optical fiber and amplifying the same and a second pre-amplifier having a low bandwidth for receiving an optical signal from the second optical fiber and amplifying the same, for thereby improving a receiving sensitivity without using a preamble bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.