公开(公告)号：US12113577B2

公开(公告)日：2024-10-08

申请号：US17453408

申请日：2021-11-03

Applicant: Cisco Technology, Inc.

Inventor： Daniel Kucharski ,  Sherif Abdalla ,  Brian Welch

IPC: G02B26/00 ,  G02B26/06 ,  G02F1/01 ,  G02F1/225 ,  H04B10/079 ,  H04B10/50 ,  H04B10/516 ,  H04B10/54 ,  G02B26/08 ,  G02F1/21

CPC classification number: H04B10/5161 ,  G02B26/06 ,  G02F1/0121 ,  G02F1/225 ,  G02F1/2255 ,  H04B10/0795 ,  H04B10/505 ,  H04B10/5053 ,  H04B10/541 ,  G02B26/0841 ,  G02F1/212 ,  G02F2201/58

Abstract: Methods and systems for encoding multi-level pulse amplitude modulated signals using integrated optoelectronics are disclosed and may include generating a multi-level, amplitude-modulated optical signal utilizing an optical modulator driven by first and second electrical input signals, where the optical modulator may configure levels in the multi-level amplitude modulated optical signal, drivers are coupled to the optical modulator; and the first and second electrical input signals may be synchronized before being communicated to the drivers. The optical modulator may include optical modulator elements coupled in series and configured into groups. The number of optical modular elements and groups may configure the number of levels in the multi-level amplitude modulated optical signal. Unit drivers may be coupled to each of the groups. The electrical input signals may be synchronized before communicating them to the unit drivers utilizing flip-flops. Phase addition may be synchronized utilizing one or more electrical delay lines.