国际光学工程学会
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作者:Xiaolei Wang , Qian Zhang ...
来源:[J].Optical Engineering(IF 0.88), 2018, Vol.57 (4), pp.046101-046101SPIE
摘要:A fiber sphere-embedded long-period fiber grating (LPFG) sensor has been proposed and fabricated for curvature measurement with high sensitivity. Compared with the normal LPFG, the embedded fiber sphere excites cladding modes and two dips of the output spectrum have been obs...
作者:Xiaolei Wang , Xin Sun ...
来源:[J].Optical Engineering(IF 0.88), 2014, Vol.53 (1), pp.011004-011004SPIE
摘要:We propose a new method of image encryption using Fourier computer-generated hologram (CGH) in the encryption system of multiple Fresnel diffraction transforms with phase masks. The digital image to be encrypted is modulated by a series of three random-phase masks in Fresnel diff...

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