William Peter

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In this paper, the concept of supermode is introduced for long-distance optical transmission systems. The supermodes exploit coupling between the cores of a multi-core fiber, in which the core-to-core distance is much shorter than that in conventional multi-core fiber. The use of supermodes leads to a larger mode effective area and higher mode density than(More)
Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, NOTICE: This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government, nor any agency thereof, nor any of their(More)
There are many logical possibilities for marking morphological features. However only some of them are attested in languages of the world, and out of them some are more frequent than others. For example, it has been observed that inflectional morphology tends to overwhelmingly involve suffixation rather than prefixation. This paper proposes an explanation(More)
A fast and accurate unsupervised clustering algorithm has been developed for clustering very large datasets. Though designed for very large volumes of geospatial data, the algorithm is general enough to be used in a wide variety of domain applications. The number of computations the algorithm requires is ~ <i>O</i>(<i>N</i>), and thus faster than(More)
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