[1] BOFFI P,UBALDI M C,PICCININ D,et al.1550 nm vo-lume holography for optical communication devices[J].IEEE Photonics Technology Letters,2000,12(10):1355-1375.
[2] ZHENG G W,TAN J C,HE Y L,et al.Low-pass spatial filtering for continuous-wave laser beam by reflection vo-lume phase gratings[J].Acta Optica Sinica,2010,30(6):1554-1559.
[6] ENDO A,YADA T,MAEJIMA T,et al.Relationship between molecular weight and exposure characteristics of dichromated gelatin[J].Journal of the Society of Photographic Science and Technology of Japan,1984,47:329.
[7] LIM Y H,KOBAYASHI H,OKAWA Y,et al.Relationship between photographic characteristics and molecular weight distribution of dichromated gelatin[J].Photographic Science and Engineering,1993,41(6):203-205.