Dual-rate DML device and module having built-in signal calibration circuit, and signal calibration method
US11063669B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 25, 2017 |
| Grant date | Jul 13, 2021 |
| Priority date | — |
| Expiry date | May 4, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/02345
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a technical field of optical communications. It relates to a dual-rate DML device and module, and a calibration method, and in particular, to a dual-rate DML device and module having a built-in signal calibration circuit, and a calibration method. According to the present invention, the signal calibration circuit is added into the device; a PD is prepositioned by means of a novel light splitting structure; a control structure for a sequence-divided multi-channel serial signal is utilized to feed back a monitoring signal to an electric driver to adjust drive current; crosstalk between backlight monitoring is reduced; and high-quality signal output under dual modulation frequencies of 25 Gbps and 28 Gbps is realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.