A high-efficient computer-generated integral imaging (CGII) method is presented based on the backward ray-tracing technique. In traditional CGII methods, the total rendering time is long, because a large number of cameras are established in the virtual world. The ray origin and the ray direction for every pixel in elemental image array are calculated with the backward ray-tracing technique, and the total rendering time can be noticeably reduced. The method is suitable to create high quality integral image without the pseudoscopic problem. Real time and non-real time CGII rendering images and optical reconstruction are demonstrated, and the effectiveness is verified with different types of 3D object models. Real time optical reconstruction with 90 × 90 viewpoints and the frame rate above 40 fps for the CGII 3D display are realized without the pseudoscopic problem.
Abstract-In this paper, we propose and design a chalcogenide (As2S3) based slot waveguide taper with exponentially decreasing dispersion profile to realize high degree pulse compression of low power chirped solitons. Based on the waveguide taper designed, self-similar pulse compression of fundamental solitons and chirped 2-soliton breather are both investigated numerically. With self-similar pulse compression scheme, a 1 ps input pulse is compressed to 81.5 fs in 6 cm propagation. By using 2-soliton breather pulses, a 1 ps chirped pulse is compressed to 80.3 fs in just 2.54 cm. This is the first demonstration of the feasibility of high degree nonlinear pulse compression in As2S3-based slot waveguide taper.Index Terms-Self-similar pulse compression, fundamental soliton, 2-soliton breather, As2S3-based slot waveguide taper.
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