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University of Illinois and the University of California, a joint research team is developing an IP-based computing systems, optical network connection can be stored in different locations of the vast amounts of data visualization. The code for the OptIPuter project is more like a parallel computer, each node is actually a computer cluster, and is equipped with a large amount of data warehousing and visualization peripherals, each node all Gigabit or 10 Gigabit Ethernet by direct access to the backbone network. The project is focused on scientific applications, emergency response, national security and health services and other fields.
Optical Image Processing Division C-DIT Details of the Conferences Sl. No Event Title of the Paper Optics East 2004. Study of Stress Distribution at the footprint of tyres by applying Holographic Interferometry. 1 Venue : Philadelphia, USA SPIE-USA Performance Analysis and Material Dependence of Asia- Pacific Micro Holographic Optical Elements as Couplers 2 Optical for Fiber Optic Communication Communication (APOC-2004) Venue: Beijing, China Abstract of the accepted papers 1. Study of Stress Distribution at the footprint of tyres by applying Holographic Interferometry. Ajith Kumar P.T, Prasannan, Sajan Ambadiyil, Varghese Kuruvilla* Optical Image processing Division, Center for development of Imaging technology, Thiruvallam, Thiruvananthapuram – 27. *Department of Physics, Cochin University of Science and Technology, Cochin – 682022, Kerala, India. The performance of any tyre design depends very much on the distribution of stress at its footprint. Holographic interferometry techniques are being used for the non- destructive evaluation of tyres. However this technique cannot be directly applied for the mapping of stress at the footprint of tyres. This is because of the fact that the footprint is obscured in between the tyre and the supporting surface. This paper describes about the experimental method we have adopted for the mapping of stress at the footprint of tyres. Both double-exposed and real-time holographic interferometric techniques were used. Holograms of good fringe visibility were recorded. This technique can be effectively applied for the evaluation of prototype tyre designs and for the identification of optimum designs and material compositions. Stress Distribution Study in Tyres - Holographic Non-Destructive Testing Optical Image Processing Division Acknowledgement The technical input and support from the R&D center, CEAT Tyre manufacturer is acknowledged. 2. Performance Analysis and Material Dependence of Micro Holographic Optical Elements as Couplers for Fiber Optic Communication. Ajith kumar P.T, Sajan Ambadiyil, Prasanan.G, Jithesh sathyan*, Samual Varghese**. Optical Image processing Division, Center for development of Imaging technology,Thiruvallam, Thiruvanathapuram – 27. * Jithesh Sathyan, Infosys-Nortel ( GEM Design ), Bangalore. * *NeST Research and Development Center, Kakkanadu, Cochin. Holographic Optical Elements (HOEs) are attracting in Optical fiber communication and optical information processing systems. Since HOEs have multiple function capability and wavelength selectivity, they are especially suitable for a verity of functions in intelligent optical networks. Other advantages of HOEs are design flexibility and ease of replication. In contrast to conventional HOEs, Optional communication and information systems need smaller and efficient elements of desired characteristics and transfer functions. Such Micro Holographic Optical Elements(MHOEs) can either be an HOE, recorded with two narrow beams of laser light or a segment cut from a larger HOE, recorded in the conventional manner. However the recording parameters and hence the diffraction efficiencies and transfer functions of MHOEs and Segmented HOEs (SHOEs) vary from one another. MHOEs include holographic couplers, splitters gratings, filters and interconnects. In our study, micro holographic couplers and segmented holographic couplers, having specific focusing and diffraction characteristics, were recorded in different holographic recording media such as silver halide(Geola PFG and PFG ), dichromated gelatin (Geola PFG) and photoresist(Shipley’s 1800). The MHOEs and SHOEs were shot in each medium, with the same angle between the object and the reference beam. Also they were recorded with the same focal length. Initially the elements were tested at 633nm from a HE-Ne laser and at 442nm from a He-Cd laser. It was found that the diffraction efficiency of the MHOE was higher than that of corresponding SHOE. Coupling factor, isolation and insertion loss of the elements differed as the recording medium was changed. The study was repeated at various other wavelengths of practical relevance and diffraction efficiency, coupling factor, isolation and insertion loss of the elements were measured. The paper reports in details about the above result and related design considerations.
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