Abstract: The present invention provides a coating fluid for forming a gas barrier layer, the coating fluid including; a liquid medium containing water; and a resin having at least one type of functional group selected from the group consisting of a hydroxy group, a carboxy group, an amino group, and a sulfo group, in which an average particle size of the resin is 100 to 600 nm.

Abstract: A coating material for preventing metal corrosion contains 50 to 99% by mass of an inorganic layered compound having an average particle size of 10 ?m or less; 1 to 50% by mass of a corrosion inhibitor; and a liquid medium, in which the total content of the inorganic layered compound and the corrosion inhibitor is 100% by mass.

Abstract: A coating material for preventing metal corrosion contains 50 to 99% by mass of an inorganic layered compound having an average particle size of 10 ?m or less; 1 to 50% by mass of a corrosion inhibitor; and a liquid medium, in which the total content of the inorganic layered compound and the corrosion inhibitor is 100% by mass.

Abstract: A technique for manufacturing optical fixed attenuators in which two fibers are axially cojoined using fusion splicing. The spliced fibers are then captured in either a splice protection splint or cylindrical ferrule that can be housed in an optical adapter. In this process for producing the attenuator, the fusion splicing is preceded by a deformation of the mode field diameters of the ends of the fibers with the cleaning arc function of the splicing unit. The resulting attenuation of the splice is dependent on the amount of deformation of the fiber core and mode field diameter. Such a technique enables precision attenuation with very low wavelength dependent loss to be fabricated. The performance of Dense Wavelength Division Multiplexing systems, as well as test facilities and individual optical components can be improved by the use of such attenuators.

Abstract: A technique for manufacturing optical fixed attenuators in which two fibers are axially cojoined using fusion splicing. The spliced fibers are then captured in either a splice protection splint or cylindrical ferrule that can be housed in an optical adapter. In this process for producing the attenuator, the fusion splicing is preceded by a deformation of the mode field diameters of the ends of the fibers with the cleaning arc function of the splicing unit. The resulting attenuation of the splice is dependent on the amount of deformation of the fiber core and mode field diameter. Such a technique enables precision attenuation with very low wavelength dependent loss to be fabricated. The performance of Dense Wavelength Division Multiplexing systems, as well as test facilities and individual optical components can be improved by the use of such attenuators.