Driver Circuit for Precise Optical Emitter Evaluation
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Summary
Problems
Existing evaluation systems for optical emitters, such as VCSELs, are bulky, complex, and generate inaccurate measurements due to the inability to produce clean, Gaussian-shaped pulses without secondary pulses, which affects their performance in applications like LIDAR.
Innovation solutions
A driver circuit that includes a capacitive element, an inductive element, and switches controlled by a signal generator and pulse shortening element to generate a single, clean, Gaussian-shaped nanosecond optical pulse, operating in a resonant mode with adjustable frequency and power, and capable of autonomous operation using a single input voltage.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If existing evaluation systems are used for optical emitters, then measurement capability is provided, but the systems are bulky, complex, and generate inaccurate measurements due to inability to produce clean Gaussian-shaped pulses
Why choose this principle:
The evaluation system is divided into distinct functional modules: a pulse generation circuit that produces Gaussian-shaped pulses, a modulator for frequency modulation, and a control unit. This segmentation allows each module to be optimized independently, reducing overall system complexity while improving measurement precision through specialized functionality.
Principle concept:
If existing evaluation systems are used for optical emitters, then measurement capability is provided, but the systems are bulky, complex, and generate inaccurate measurements due to inability to produce clean Gaussian-shaped pulses
Why choose this principle:
The system incorporates self-diagnostic capabilities and automated calibration routines that allow it to maintain measurement accuracy without requiring complex external calibration equipment. The control unit automatically adjusts parameters and detects system state, reducing the need for manual intervention and simplifying operation.
Application Domain
Data Source
AI summary:
A driver circuit that includes a capacitive element, an inductive element, and switches controlled by a signal generator and pulse shortening element to generate a single, clean, Gaussian-shaped nanosecond optical pulse, operating in a resonant mode with adjustable frequency and power, and capable of autonomous operation using a single input voltage.
Abstract
A driver circuit may include an optical emitter. The driver circuit may include a first switch that, in a closed state, is to cause charging of an inductive element, and when transitioning from the closed state to an open state is to cause discharging of the inductive element to charge a capacitive element. The driver circuit may include a second switch that in a closed state is to cause discharging of the capacitive element to provide an electrical pulse to the optical emitter. The driver circuit may include a signal generator configured to generate a first signal for controlling the open state and the closed state of the first switch, and a pulse shortening element configured to shorten a pulse width of the first signal to generate a second signal for controlling the open state and the closed state of the second switch.