Guojie Chen

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An intensive earthquake, the Wenchuan Earthquake of 8.0 on the Richter scale, struck western Sichuan, China on May 12, 2008. The earthquake significantly affected all industries in the quake-hit areas including local tourism. This paper provides suggestions for reconstruction after outlining findings on the various ways by which the earthquake affected the(More)
A novel approach to generate microwave signals is presented by employing a dual-wavelength erbium-doped fiber ring laser. By using a delay interferometer as a comb filter cascaded with a tunable bandpass filter and a saturable absorber formed by an unpumped polarization-maintaining erbium-doped fiber, a stable wavelength-tunable dual-wavelength single(More)
a novel method for designing high channel-count fiber Bragg gratings (FBGs) is proposed. For the first time, tailored group delay is introduced into the target reflection spectra to obtain a more even distribution of the refractive index modulation. This approach results in the reduction of the maximum refractive index modulation to physically realizable(More)
Making rural settlements of Mountainous Regions in Western Sichuan as the study objects and using symbolic statistical methods, then combining the case study of Daofu County, the paper analyzes the negative impact of the scattered rural settlements on infrastructure construction, farmers’ income increase and mountain ecological reconstruction in mountainous(More)
InGaN alloys materials are extensively utilized in light emitting diodes (LEDs) and laser diodes (LDs). In recent years, InGaN alloys materials have also been considered to use in solar cells because of their favorable photovoltaic properties, including a direct band gap, a higher absorption coefficient at the band edge, superior radiation resistance, high(More)
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