【摘要】 设计制作了氩气加压的硬质玻璃双坩埚拉丝装置,可拉制不同丝径和芯皮比的As-S和其它硫系玻璃红外光纤。当采用As₃₀S₆₂作芯料,As₃₅S₆₅作皮料,制得光纤数值孔径为0.5,在2.4μm波长处损耗为1.32dB/m。As-S芯皮结构光纤比芯体玻璃拉制的裸光纤损耗小。更多还原

【Abstract】 A new fiber drawing apparatus with a double crucible made of hardness glass and an argon gas pressure control system was designed. Using this apparatus, As-S or other chalcogenide glasses fibers of different diameters and different core to clad ratios can be drawn.Fiber with numerical aperture of 0.5 and the transmission loss of 1.32 dB/m at 2.4 micron wavelength is obtained when the composition of core and clad glasses of fiber is As₃₈S₆₂ and As₃₅S（65） respectively. It is also shown that the loss of such fiber is lower than that of the unclad fiber.更多还原