Method for increasing EAM bandwidth, component structure and manufacturing process thereof using plural p-i-n waveguides serially connected by high-impedance transmission lines
US11374382B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2020 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Mar 10, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/2018
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for increasing the bandwidth of an electroabsorption modulator (EAM) includes the following steps. First, a plurality of p-i-n active waveguides for the EAM are defined on a p-i-n optical waveguide forming an EAM having a shorter p-i-n active waveguide length. Then, the bandwidth of the EAM can be increased. Second, the high-impedance transmission lines are used in series to connect the EAM sections to reduce the microwave reflection and then increase the device bandwidth. Finally, the impedance-controlled transmission lines for the signal input and output can not only reduce the parasitic effects resulting from packaging, but also reduce the microwave reflection resulting from the impedance mismatch at the device input and load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.