A novel direct writing technique using submicron-diameter fibers is presented. This technique adopts contact mode in the process of writing, and submicron lines with different widths have been obtained. Experimental r...A novel direct writing technique using submicron-diameter fibers is presented. This technique adopts contact mode in the process of writing, and submicron lines with different widths have been obtained. Experimental results demonstrate that the resolution of this technique can be smaller than the exposure wavelength of 442 nm, and 380-nm-wide line is achieved. In addition, the distribution of light fields in the photoresist layer is analyzed by finite-difference time-domain method.展开更多
We report 20 Gb/s transmission of four-level pulse amplitude modulation （PAM） signal using a directly modulated tunable distributed Bragg reflector （DBR） laser. Transmission distance over 20 km was achieved withou...We report 20 Gb/s transmission of four-level pulse amplitude modulation （PAM） signal using a directly modulated tunable distributed Bragg reflector （DBR） laser. Transmission distance over 20 km was achieved without using optical amplifiers and optical dispersion compensation modules. A wavelength tuning range of 11.5 nm and a 3 dB bandwidth greater than 10 GHz over the entire wavelength tuning range were obtained.展开更多
基金supported by the National Natural Science Foundation of China under Grant Nos.60778030supported by the National Natural Science Foundation of China under Grant Nos.60678037
文摘A novel direct writing technique using submicron-diameter fibers is presented. This technique adopts contact mode in the process of writing, and submicron lines with different widths have been obtained. Experimental results demonstrate that the resolution of this technique can be smaller than the exposure wavelength of 442 nm, and 380-nm-wide line is achieved. In addition, the distribution of light fields in the photoresist layer is analyzed by finite-difference time-domain method.
基金supported by the National Key Research and Development Program of China(Nos.2016YFB0402301 and 2017YFF0206103)the National Natural Science Foundation of China(Nos.61320106013,61635010,61474112,61574137,and 61504170)
文摘We report 20 Gb/s transmission of four-level pulse amplitude modulation （PAM） signal using a directly modulated tunable distributed Bragg reflector （DBR） laser. Transmission distance over 20 km was achieved without using optical amplifiers and optical dispersion compensation modules. A wavelength tuning range of 11.5 nm and a 3 dB bandwidth greater than 10 GHz over the entire wavelength tuning range were obtained.
