Linear burst mode receiver
US9059807B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2011 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Sep 20, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/672
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention provides a linear burst mode receiver comprising a first amplifier connected to a photodiode adapted to detect an optical input burst signal, a second amplifier connected to said photodiode; and means for deriving the peak input current of the detected burst signal using said second amplifier. The invention further provides means for using the derived peak input current to adjust the gain of the first amplifier during the preamble of each burst, such that the output voltage swing of the first amplifier equals a given reference, independent of the strength of the optical input burst signal. The usage of the fast feed-forward automatic gain control mechanism solves the problems with gain switching and non-linearity prevalent in today's burst-mode receivers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.