High dynamic range APD optical receiver for analog applications
US8195055B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2009 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Sep 27, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/6911
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical receiver includes a light receiving element such as an avalanche photodiode (APD) for converting an optical signal to an electrical photocurrent amplified by a first current gain value and a temperature sensor for measuring the temperature of the light receiving element. The optical receiver also includes a control unit configured to control a bias voltage applied to the light receiving element such that the first gain value is adjusted to a second gain value based at least in part on a predetermined relationship between the current gain, the temperature and the applied bias voltage. The second current gain value is based at least in part on one or more parameters characteristic of the optical receiver and a system in which the optical receiver is employed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.