Fiber optic receiver with an adjustable response preamplifier
US6928249B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2001 |
| Grant date | Aug 9, 2005 |
| Priority date | — |
| Expiry date | Oct 8, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/6932
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A fiber optic receiver that includes an opto-electronic transducer, an adjustable response preamplifier circuit, and a post-amplifier circuit is described. The opto-electronic transducer is configured to generate an electrical data signal in response to a received optical data signal. The adjustable response preamplifier circuit is coupled to the opto-electronic transducer and is operable to amplify an electrical data signal generated by the opto-electronic transducer. The post-amplifier circuit is coupled to an output of the preamplifier circuit and is configured to transmit a mode control signal to the preamplifier circuit in response to a received control signal. By transmitting the mode control signal from the post-amplifier to the preamplifier, the adjustable response amplifier may be placed in the preamplifier stage within a receiver optical sub-assembly (ROSA). As a result, the fiber optic receiver may accommodate multiple operating modes (e.g., multiple bandwidth and power operating modes) while conforming to existing receiver optical sub-assembly (ROSA) size and pin count constraints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.