公开(公告)号：US10651942B2

公开(公告)日：2020-05-12

申请号：US16275727

申请日：2019-02-14

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Cheng Li ,  Jim Huang ,  Ashkan Seyedi ,  Marco Fiorentino ,  Raymond G. Beausoleil

IPC: H04B10/00 ,  H04B10/50 ,  G02F1/225 ,  G02F1/01 ,  G02F1/21

Abstract: One example includes a bias-based Mach-Zehnder modulation (MZM) system. The system includes a Mach-Zehnder modulator to receive and split an optical input signal and to provide an intensity-modulated optical output signal based on a high-frequency data signal to modulate a relative phase of the split optical input signal to transmit data and based on a bias voltage to modulate the relative phase of the split optical input signal to tune the Mach-Zehnder modulator. The system also includes a bias feedback controller to compare a detection voltage associated with the intensity-modulated output signal with a reference voltage to measure an extinction ratio associated with an optical power of the intensity-modulated optical output signal and to adjust the bias voltage based on the comparison to substantially maximize the extinction ratio.

公开(公告)号：US20190190610A1

公开(公告)日：2019-06-20

申请号：US16275727

申请日：2019-02-14

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Cheng Li ,  Jim Huang ,  Ashkan Seyedi ,  Marco Fiorentino ,  Raymond G. Beausoleil

IPC: H04B10/50 ,  G02F1/01 ,  G02F1/225

CPC classification number: H04B10/503 ,  G02F1/0102 ,  G02F1/0123 ,  G02F1/225 ,  G02F2001/212

Abstract: One example includes a bias-based Mach-Zehnder modulation (MZM) system. The system includes a Mach-Zehnder modulator to receive and split an optical input signal and to provide an intensity-modulated optical output signal based on a high-frequency data signal to modulate a relative phase of the split optical input signal to transmit data and based on a bias voltage to modulate the relative phase of the split optical input signal to tune the Mach-Zehnder modulator. The system also includes a bias feedback controller to compare a detection voltage associated with the intensity-modulated output signal with a reference voltage to measure an extinction ratio associated with an optical power of the intensity-modulated optical output signal and to adjust the bias voltage based on the comparison to substantially maximize the extinction ratio.