The actuation voltage of the proposed M- DAC device is approximately 6 V, which is less than one half of the actuation voltages of a previously reported M- DAC equipped with electrostatic microactuators. Because the Young's modulus of parylene-C is considerably lower than that of silicon, the electrostatic microactuators in the proposed device require much lower actuation voltages. The spring structures of the silicon-based M- DAC device were monolithically fabricated using parylene-C. We propose an electrostatically-actuated microelectromechanical digital-to-analog converter (M- DAC) device with low actuation voltage. Ma, Cheng-Wen Lee, Fu-Wei Liao, Hsin-Hung Kuo, Wen-Cheng Yang, Yao-Joe Low-Actuation Voltage MEMS Digital-to-Analog Converter with Parylene Spring Structures. In this paper, we describe the principle of the bandwidth extension and review high-speed transmission experiments enabled by this technology. This technology enables us to generate baseband signals with bandwidths of up to around 60 GHz, which is almost twice that of signals generated by typical CMOS DACs. We have developed a technology to extend the DACs' bandwidth using a digital preprocessor, two sub- DACs, and an analog multiplexer. In advanced fiber transmission systems with digital signal processors (DSPs), analog bandwidths of digital-to-analog converters ( DACs), which interface the DSPs and optics, are the major factors limiting the data rates. Yamazaki, Hiroshi Nagatani, Munehiko Hamaoka, Fukutaro Horikoshi, Kengo Nakamura, Masanori Matsushita, Asuka Kanazawa, Shigeru Hashimoto, Toshikazu Nosaka, Hideyuki Miyamoto, Yutaka Ultra-high-speed optical transmission using digital-preprocessed analog-multiplexed DAC The finite different time domain (FDTD) and Plane Wave Expansion (PWE) methods are used to back the overall operation of the proposed optical DAC. The total size of the proposed optical 3 bit DAC is equal to 44 μm Ã- 37 μm of 2D square lattice photonic crystals of silicon rods with refractive index equal to 3.4. The proposed structure is based on the photonic crystal ring resonators (PCRR) with combining the nonlinear Kerr effect on the PCRR. Design of integrated all optical digital to analog converter ( DAC) using 2D photonic crystalsĪ novel design of all optical 3 bit digital to analog ( DAC) converter will be presented in this paper based on 2 Dimension photonic crystals (PhC).
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