Burst-mode receiver, and method of bias voltage control for APD of burst-mode receiver
US9525495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2013 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | May 30, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0083
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A burst-mode receiver for receiving burst optical signals having different intensities by a reversely connected APD, including: a current detection circuit outputting a photocurrent that is generated by APD and is output from a current mirror circuit (CMC) as a voltage proportional to the photocurrent, the CMC being connected in series between a power supply and APD; a peak detector circuit detecting and holding a peak value of the output voltage of the current detection circuit; a resistor connection switching circuit, which is inserted between the CMC and APD, for connecting a series resistor to APD in series by switching; and a comparator outputting a switching signal for switching the resistor connection switching circuit so that the series resistor is connected to APD in series in a case where a voltage detected by the peak detector circuit is equal to or more than a predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.