Optical power and gain detection apparatus and method for optical amplifier in burst mode
US10797798B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2016 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | Dec 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/0797
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical power and gain detection apparatus including multiple optical power detection circuits, an FPGA device, and a temperature detection circuit. Various optical power detection circuits include a respective independent photoelectric converter, a trans-impedance amplifier, an analog signal conditioning circuit, a filter and an analog-digital conversion chip. By improving an analog circuit, digital detection and control in an optical amplifier, the property of the FPGA device may be used to realize the detection of optical signal and gain in a burst mode, avoid increasing complicated analogue circuits, and avoid the influence caused by element inconsistency in an analogue control solution. Whether the optical signal is in a stable mode or in a burst mode, the algorithm can detect the optical power accurately and stably, with a wide application range. By strictly controlling the synchronism of ADC sampling and the delay of calculation, the amplifier gain may be calculated more accurately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.