发明授权
- 专利标题： Temperature-locked loop for optical elements having a temperature-dependent response
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申请号： US17093399申请日： 2020-11-09
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公开(公告)号： US11005572B1公开(公告)日： 2021-05-11
- 发明人: Ping Chuan Chiang , Mayank Raj , Chuan Xie , Stanley Y. Chen , Sandeep Kumar , Sukruth Pattanagiri , Parag Upadhyaya , Yohan Frans
- 申请人： XILINX, INC.
- 申请人地址： US CA San Jose
- 专利权人： XILINX, INC.
- 当前专利权人： XILINX, INC.
- 当前专利权人地址： US CA San Jose
- 代理机构： Patterson + Sheridan, LLP
- 主分类号： H04B10/69
- IPC分类号： H04B10/69 ; H03L1/02 ; H03L7/189
摘要：
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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