منابع مشابه
Stable coupled conjugate solitary waves in optical fibers.
Four-wave mixing of an intense continuous-wave pump beam with an ultrashort soliton signal in an optical fiber is theoretically analyzed. A novel class of stable two-color coupled solitary waves is found. These vector parametric solitons represent the optimal frequency conversion of an ultrashort pulse.
متن کاملMach-Zehnder interferometer with multimode fibers using the double phase-conjugate mirror.
Commercial availability of 10-cm (4-in.) GaAs wafers suggests that this material could be used for practical spectroscopic gratings. In addition, gratings with a variety of groove structures are used in integrated electrooptics which are mostly based on compound semiconductors.2 An understanding of crystallographic effects in controlling groove geometry during photoetching will permit the fabri...
متن کاملComparative Study of Direct Image Transmission through Various Optical Fibers Using the Phase-Conjugate Wave
In this article, we compare direct image transmissions through various multimode optical fibers, namely, step-index silica, graded-index silica, and step-index plastic fibers. We make use of a round-trip transmission in the optical fiber as well as a phase-conjugate wave generated by a self-pumped BaTiO3 crystal to recover a distorted image. The image was best recovered for a step-index silica ...
متن کاملGum Tragacanth Fibers Introducing Primitive GT Fibers (RESEARCH NOTE)
In this research, a method for producing gum tragacanth (GT) fibers is presented. Ribbon type GT of Astragalus Gummifer species were obtained from local production lands. The gum was treated with alkali to increase its process ability, and allowed to stand for a period of time to reach the proper viscosity and/or to "ripen". Samples with different ripening times were prepared and their viscosit...
متن کاملFABRICATION OF CARBON FIBERS FROM COMMERCIAL WET SPIN POLYACRYLONITRILE FIBERS
Carbon fibers are fabricated from different materials such as special polyacrylonitrile (PAN) fibers, cellulose fibers and pitch. But PAN fibers are recognized as the most widely used precursor for the present-day manufacture of carbon fibers. The process of fabrication carbon fibers from special PAN fibers is composed of two steps including oxidative stabilization at low temperature and carbon...
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ژورنال
عنوان ژورنال: Kobunshi
سال: 1968
ISSN: 0454-1138,2185-9825
DOI: 10.1295/kobunshi.17.879