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公开(公告)号：US12072239B1
公开(公告)日：2024-08-27
申请号：US18128948
申请日：2023-03-30
Applicant: XILINX, INC.
Inventor： Zhaowen Wang , Mayank Raj , Chuan Xie , Sandeep Kumar , Muqseed Mohammad , Sukruth Pattanagiri Giriyappa , Stanley Y. Chen , Parag Upadhyaya , Yohan Frans
CPC classification number: G01J1/44 , G01J1/0252 , H03F3/45076 , G01J2001/444 , G01J2001/446
Abstract: An integrated circuit (IC) device includes a controller circuitry having an input coupled to a photodiode of an optoelectronic circuitry and an output coupled to a heater of the optoelectronic circuitry, the controller circuitry configured to determine a center frequency of the optoelectronic circuitry based on a shape of an input signal received from the photodiode, and provide a heater signal to the heater based on the shape of the input signal and the center frequency of the optoelectronic circuitry.
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公开(公告)号：US11005572B1
公开(公告)日：2021-05-11
申请号：US17093399
申请日：2020-11-09
Applicant: XILINX, INC.
Inventor： Ping Chuan Chiang , Mayank Raj , Chuan Xie , Stanley Y. Chen , Sandeep Kumar , Sukruth Pattanagiri , Parag Upadhyaya , Yohan Frans
Abstract: Examples described herein generally relate to a temperature-locked loop for optical elements. In an example, a device includes a controller and a digital-to-analog converter (DAC). The controller includes a DC-controllable transimpedance stage (DCTS), a slicer circuit, and a processor. The DCTS is configured to be coupled to a photodiode. An input node of the slicer circuit is coupled to an output node of the DCTS. The processor has an input node coupled to an output node of the slicer circuit. The DAC has an input node coupled to an output node of the processor and is configured to be coupled to a heater. The processor is configured to control (i) the DCTS to reduce a DC component of a signal on the output node of the DCTS and (ii) an output voltage on the output node of the DAC, both based on a signal output by the slicer circuit.
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