.Optimal design of a low-loss 2-bit electrooptic analog-to-digital converter[J].Optoelectronics Letters,2005,1(3):185-187 Optimal design of a low-loss 2-bit electrooptic analog-to-digital converter ZHANG Chang-ming LIAO Yi-tao LIU Yong-zhi DAI Ji-zhi School of Optic-Electronic Information, UESTC, Chengdu 610054, China Abstract:       The structure of the optical waveguide of 2-bit electrooptic A/D converter with proton-exchange micro prisms is optimized by the finite-difference beam propagation method (FD-BPM). The electrode parameters of the converter are optimized by conformal mapping. The optimal parameters are a halfwave voltage ofV π =4.5V and a bandwidth of Δf=1.4 GHz. A normalized transmitted power of 69.75% is obtained by FD-BMP and the output waveguide gap is 300 μm. Hits: 3424 Download times: 180 View Full Text    Download reader