公开(公告)号：US20240396638A1

公开(公告)日：2024-11-28

申请号：US18202512

申请日：2023-05-26

Applicant: XILINX, INC.

Inventor： Adebabay M. BEKELE ,  Mayank RAJ ,  Chuan XIE ,  Sandeep KUMAR ,  Zhaowen WANG ,  Sukruth PATTANAGIRI GIRIYAPPA ,  Parag UPADHYAYA ,  Yohan FRANS

IPC: H04B10/54 ,  H04B10/50 ,  H04B10/508

Abstract: Some examples described herein provide for controlling output modulation amplitude for optoelectronic devices. In an example, a method includes transmitting a first data pattern to an optical modulator device. The method also includes determining, while transmitting the first data pattern and for each heater control value of a plurality of heater control values for a heater, a photodiode current value associated with the optical modulator device to generate a plurality of photodiode current values corresponding to the plurality of heater control values. The method also includes determining a maximum optical modulation amplitude for the optical modulator device based at least in part on the plurality of photodiode current values corresponding to the plurality of heater control values. The method also includes controlling the heater for the optical modulator device based on the maximum optical modulation amplitude.

公开(公告)号：US20240405882A1

公开(公告)日：2024-12-05

申请号：US18205748

申请日：2023-06-05

Applicant: XILINX, INC.

Inventor： Adebabay M. BEKELE ,  Mayank RAJ ,  Chuan XIE ,  Sandeep KUMAR ,  Zhaowen WANG ,  Sukruth PATTANAGIRI GIRIYAPPA ,  Parag UPADHYAYA ,  Yohan FRANS

IPC: H04B10/54

Abstract: Some examples described herein provide for controlling output modulation amplitude for optoelectronic devices. In an example, a method includes transmitting a data pattern to an optical modulator device. The method also includes identifying, for each heater control value of a plurality of heater control values for a heater thermally coupled with the optical modulator device, an optical modulation amplitude corresponding to the heater control value based on a corresponding photodiode current value identified while transmitting the data pattern. The method also includes determining a maximum optical modulation amplitude for the optical modulator device based on a plurality of optical modulation amplitudes corresponding to the plurality of heater control values according to the identifying. The method also includes controlling the heater based at least in part on the determined maximum optical modulation amplitude that has been modified according to scaling maximum photodiode current values.

公开(公告)号：US20240328851A1

公开(公告)日：2024-10-03

申请号：US18128397

申请日：2023-03-30

Applicant: XILINX, INC.

Inventor： Zhaowen WANG ,  Mayank RAJ

IPC: G01J1/44

CPC classification number: G01J1/44 ,  G01J2001/446

Abstract: An integrated circuit (IC) device includes a controller circuitry having an input connected to a photodiode of an optoelectronic circuitry and an output connected to a biasing circuitry, the biasing circuitry having an input connected to the output of the controller circuitry, the controller circuitry configured to transmit a transimpedance control signal code to the biasing circuitry configured to cause the biasing circuitry to offset a DC current component of the output of the photodiode.