国家自然科学基金(s61222501)

作品数：5被引量：1H指数：1
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Apodized grating coupler using fully-etched nanostructures
《Chinese Physics B》2016年第8期211-215,共5页武华 李冲 李智勇 郭霞 
supported by the National Natural Science Foundation of China(Grant Nos.61222501,61335004,and 61505003);the Specialized Research Fund for the Doctoral Program of Higher Education of China(Grant No.20111103110019);the Postdoctoral Science Foundation of Beijing Funded Project,China(Grant No.Q6002012201502);the Science and Technology Research Project of Jiangxi Provincial Education Department,China(Grant No.GJJ150998)
A two-dimensional apodized grating coupler for interfacing between single-mode fiber and photonic circuit is demonstrated in order to bridge the mode gap between the grating coupler and optical fiber. The grating groo...
关键词：grating couplers equivalent refractive index mode matching coupling efficiency 
Phosphor-free white light-emitting diodes
《Chinese Physics B》2015年第6期75-82,共8页郭霞 刘巧莉 李冲 刘白 董建 沈光地 
Project supported by the National Natural Science Foundation of China(Grant Nos.61222501 and 61335004);the Specialized Research Fund for the Doctoral Program of Higher Education of China(Grant No.20111103110019)
The multiple color-matching schemes that could improve the color rendering index for phosphor-free white LEDs are discussed. Then we review a few of the recent research directions for phosphor-free white LEDs, which i...
关键词：phosphor-free white light-emitting diodes color rendering index hybrid integration 
Design of two-dimensional apodized grating couplers with Gaussian diffractive mode
《Chinese Optics Letters》2015年第5期10-13,共4页武华 李冲 刘巧莉 刘白 董建 史磊 郭霞 
supported by the National Natural Science Foundation of China(Nos.61222501 and 61335004);the Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20111103110019)
Two-dimensional apodized grating couplers are proposed with grating grooves realized by a series of nano- rectangles, with the feasibility of digital tailoring the equivalent refractive index of each groove in order t...
关键词：Gaussian distribution Optical fiber coupling Optical fibers 
Optimal oxide-aperture for improving the power conversion efficiency of VCSEL arrays
《Chinese Physics B》2015年第2期181-185,共5页王文娟 李冲 周弘毅 武华 栾信信 史磊 郭霞 
supported by the National Natural Science Foundation of China(Grant Nos.61222501 and 61335004);the Specialized Research Fund for the Doctoral Program of Higher Education of China(Grant No.20111103110019)
The maximum power conversion efficiencies of the top-emitting,oxide-confined,two-dimensional integrated 2×2 and4×4 vertical-cavity surface-emitting laser（VCSEL） arrays with the oxide-apertures of 6 μm,16 μm,19 ...
关键词：vertical-cavity surface-emitting laser arrays power conversion efficiency oxide-aperture 
Electrical and optical properties of indium tin oxide/epoxy composite film被引量：1
《Chinese Physics B》2014年第7期601-604,共4页郭霞 郭春威 陈宇 苏治平 
supported by the National Natural Science Foundation of China(Grant Nos.61222501 and 61335004)
The electrical and optical properties of the indium tin oxide （ITO）/epoxy composite exhibit dramatic variations as functions of the ITO composition and ITO particle size. Sharp increases in the conductivity in the v...
关键词：percolation effect indium tin oxide/epoxy composite film electrical state transition optical transmittance 
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