Invention Grant
- Patent Title: Laser driver designs to reduce or eliminate fault laser firing
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Application No.: US16590892Application Date: 2019-10-02
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Publication No.: US11545811B2Publication Date: 2023-01-03
- Inventor: Celal Avci , Yalcin Alper Eken , Ercan Kaymaksut , Shawn S. Kuo , Atilim Ergul , Mehmet Arda Akkaya
- Applicant: Analog Devices International Unlimited Company
- Applicant Address: IE Limerick
- Assignee: Analog Devices International Unlimited Company
- Current Assignee: Analog Devices International Unlimited Company
- Current Assignee Address: IE Limerick
- Agency: Akona IP
- Main IPC: H01S5/042
- IPC: H01S5/042 ; H01S5/026 ; H01S5/068 ; H03K17/687 ; H01S5/062

Abstract:
Laser driver designs that aim to reduce or eliminate the problem of fault laser firing are disclosed. Various laser driver designs presented herein are based on providing a current dissipation path that is configured to start providing a resistance for dissipating at least a portion, but preferably substantially all, of the negative current from the laser diode. Dissipating at least a portion of the negative current may decrease the unintentional increase of the voltage at the input to the laser diode and, therefore, reduce the likelihood that fault laser firing will occur. A control logic may be used to control the timing of when the current dissipation path is activated (i.e., provides the resistance to dissipate the negative current from the laser diode) and when it is deactivated.
Public/Granted literature
- US20210104866A1 LASER DRIVER DESIGNS TO REDUCE OR ELIMINATE FAULT LASER FIRING Public/Granted day:2021-04-08
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