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Strip silicon waveguide for code synchronization in all-optical analog-to-digital conversion based on a lumped time-delay compensation scheme 下载免费PDF全文
An all-optical analog-to-digital converter(ADC) based on the nonlinear effect in a silicon waveguide is a promising candidate for overcoming the limitation of electronic devices and is suitable for photonic integration. In this paper, a lumped time-delay compensation scheme with 2-bit quantization resolution is proposed. A strip silicon waveguide is designed and used to compensate for the entire time-delays of the optical pulses after a soliton self-frequency shift(SSFS) module within a wavelength range of 1550 nm–1580 nm. A dispersion coefficient as high as-19800 ps/(km·nm) with ±0.5 ps/(km·nm)variation is predicted for the strip waveguide. The simulation results show that the maximum supportable sampling rate(MSSR) is 50.45 GSa/s with full width at half maximum(FWHM) variation less than 2.52 ps, along with the 2-bit effectivenumber-of-bit and Gray code output. 相似文献
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在分析面阵CCD图像传感器结构和驱动时序基础上,针对高分辨率高灵敏度ICX694ALG大面阵CCD图像传感器 ,研究其驱动时序发生器。以现场可编程门阵列 ( FPGA) 作为硬件平台 ,通过Verilog HDL硬件描述语言对该驱动时序发生器进行了硬件描述,采用ISE软件进行功能仿真,并针对XILINX公司的可编程逻辑器件XC3S1000进行了硬件适配。仿真测试表明,FPGA驱动时序发生器能够满足高分辨高灵敏ICX694ALG大面阵CCD图像传感器驱动要求,达到了设计要求。 相似文献
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