6Khanarian G. Optical properties of cyclic olefin copolymers[J]. Optical Engineering, 2001,40(6) : 1024.
7B C Ho,J H Chen. Gradient-index polymer fibers prepared by extrusion[J]. Polymer, 1995, (3) :31312.
8Sang Hyuk Im,Duck Jong Suh,O Ok Park,et al.Fabrication of a grated-index polymer optical fiber preform without a cavity by inclusion of an additional monomer under a centrifugal force field[J]. Applied Optics,2002,41 (10) :1858-1860.
9Yuji Watanabe,Y Takano,R Yishida,et al. Transmission test results of perfluorinated graded index plastic optical fiber using commericially available transceivers [C]. 7th Microoptics Conference and the 8th International POF Conference, Chiba, Japan, 1999: 56- 59.