نتایج جستجو برای: optical communication equipment
تعداد نتایج: 670338 فیلتر نتایج به سال:
Computer generated holograms (CGHs) have been successfully used for wavefront correction for measuring aspheric surfaces. Features on the CGHs have assisted the alignment of the optical test equipment. CGHs can also be used to provide alignment references for other complex optical systems. This paper discusses the types of CGHs that can be used for optical alignment and gives some examples.
Boulat A. Bash, Andrei H. Gheorghe, Monika Patel, Jonathan L. Habif, Dennis Goeckel, Don Towsley, and Saikat Guha School of Computer Science, University of Massachusetts, Amherst, Massachusetts, USA 01003, Quantum Information Processing Group, Raytheon BBN Technologies, Cambridge, Massachusetts, USA 02138, Amherst College, Amherst, Massachusetts, USA 01002, Electrical and Computer Engineering D...
A double-periodic array of pairs of parallel gold nanorods is shown to have a negative refractive index in the optical range. Such behavior results from the plasmon resonance in the pairs of nanorods for both the electric and the magnetic components of light. The refractive index is retrieved from direct phase and amplitude measurements for transmission and reflection, which are all in excellen...
We prove that, under certain conditions, the capacity of an optical communication channel with in-line, nonlinear filtering (regeneration) elements can be higher than the Shannon capacity for the corresponding linear Gaussian white noise channel.
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