Optical fiber faceplate core glass with refractive index of 1.5-1.6 and method for preparing optical fiber faceplate core glass

Abstract

The invention discloses optical fiber faceplate core glass with the refractive index of 1.5-1.6 and a method for preparing the optical fiber faceplate core glass. The optical fiber faceplate core glass with the refractive index of 1.5-1.6 comprises boric acid, quartz sand, aluminum hydroxide, calcium carbonate, zinc oxide, potassium carbonate, sodium carbonate, barium carbonate, lanthanum oxide and diarsenic trioxide. The optical fiber faceplate core glass with the refractive index of 1.5-1.6 and the method for preparing the optical fiber faceplate core glass have the advantages that glass formulas and the method can be used for core glass for optical fiber faceplates, the refractive index of the optical fiber faceplate core glass is within the range of 1.50-1.60, the expansion coefficientof the optical fiber faceplate core glass is (87+ / -5)*10<-7> / DEG C, and the optical fiber faceplate core glass is high in transmittance; the softening temperature of the optical fiber faceplate coreglass is 630-720 DEG C under the control, the lower limit of the crystallization temperature of the optical fiber faceplate core glass is higher than or equal to 850 DEG C, crystallization can be prevented under the condition of heat preservation at the temperature of 850 DEG C for 2 hours, and accordingly the optical fiber faceplate core glass is good in crystallization-resistant performance andchemical stability.

Description

technical field [0001] The invention relates to an optical fiber panel core glass with a refractive index of 1.5-1.6 and a manufacturing method thereof. Background technique [0002] The fiber optic panel is an optical fiber board made of thousands of optical fibers arranged regularly, heated and pressurized. Each of the fibers is composed of core glass and sheath glass, and is unidirectionally transmitted by the optical fiber according to the principle of total optical reflection. The refractive index of the core glass is required to be greater than that of the cladding glass. The fiber optic panel has the characteristics of high resolution, clear transmission, small size and light weight. At present, fiber optic panels are mainly used for input windows in low-light night vision devices. With the deepening of people's understanding of fiber optic panels, they are also gradually used in image display, image acquisition and other fields. [0003] Because in the field of im...

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Problems solved by technology

However, the optical glass within the scope of this patent has an expansion coefficient of (70±2)×10 -7 / °C, the anti-devitrification ability cannot meet the special production process requirements of optical fiber panels, and the lower limit temperature of devitrification is ≤800°C. During the process of drawing and melting of optical fiber panels, the glass will be devitrified as the core material glass, making the optical fiber inverted The device does not have the ability to transmit light