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16 November 2010 Design and simulation of fast-pulse control signal generator for the electro-holographic optical switch
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Abstract
The electro-holographic optical switch based on the quadratic electro-optic effect in paraelectric photorefractive crystals requires driving signal of fast pulse. The pulse rise/fall time and voltage are 10-10-10-8s and 102-103V, respectively, depending on the applications. A pulse control signal generator for the electro-holographic optical switch was designed and simulated. Considering the integration of pulse signal generator and the switch, the circuit employs three stages compact Marx generators utilizing parallel avalanche bipolar junction transistors series operated in the avalanche mode in each stage. These transistors and the crystals are mounted on printed circuit board. According to the simulated results, the output voltage ranged from 1.2kV to 1.5kV. The rise/fall time of this pulse is less than 3 nanoseconds. The pulse width is 20 nanoseconds, and trigger delay is about 1 nanosecond. The repetition rate is less than 50MHz which can be increased by reducing the pulse width of the trigger. The simulation results indicate that the pulse control signals from the designed generator can match the application of electro-holographic optical switch well.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yansheng Song, Jiarong Ji, Wenhua Dou, and Changli Wen "Design and simulation of fast-pulse control signal generator for the electro-holographic optical switch", Proc. SPIE 7847, Optoelectronic Devices and Integration III, 784720 (16 November 2010); https://doi.org/10.1117/12.869073
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