[1] Hidaka T, Morikawa T, Shimada J Hollow-core oxide-glass cladding optical fibers for middle-infrared region. J. Appl. Phys., 1981, 52(7):4467~4471
[2] Hidaka T, Kumada K, Shimada J. GeO2-InO-K2O glass as the cladding materials of 940 cm-1 CO2 laser light transmitting hollow-core waveguide. J. Appl. Phys., 1989, 53(8):5484~5488
[6] Liu Jixiang, Han Jianjun, Zhan Liyuan. Calculation of infrared optical constants for CO2 laser hollow waveguide materials. J. Wuhan University of Technology, 1996, 11(2):58~66