公开(公告)号：US20210296850A1

公开(公告)日：2021-09-23

申请号：US16903159

申请日：2020-06-16

Applicant: LuxNet Corporation

Inventor： FANG-JENG LIN ,  YU-CHUN FAN ,  PI-CHENG LAW ,  YI-CHING CHIU

IPC: H01S5/026 ,  H01S5/028 ,  H01S5/20 ,  H01S5/06

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.