Dual rate receiving device
US8331801B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 9, 2010 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Aug 7, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/693
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A dual rate receiving device is provided, which is applicable to an optical transceiver module, and includes a dual rate optical receiving component, a channel switching circuit, a low-speed limiting amplifier data path, and a high-speed limiting amplifier data path. The dual rate optical receiving component further includes a photodetector and a dual rate trans-impedance amplifier, the channel switching circuit further includes a first controllable switch, a second controllable switch, a third controllable switch, and a fourth controllable switch, the low-speed limiting amplifier data path further includes a low-speed limiting amplifier, and the high-speed limiting amplifier data path further includes a high-speed limiting amplifier. The technical solution is adopted, so that while an optical receiving component is working at the most suitable rate, a limiting amplifier data path at a corresponding working rate can be selected, so as to implement a high sensitivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.