[1] Harris S E,Ammann E O,Chang I C.Optical network synthesis using birefringent crystals. I.synthesis of lossless network of equal-length crystals.Journal of the Optical Society of America,1964,54(10):1267~1279
[2] Ammann E O.Optical network synthesis using birefringent crystals.Ⅲ.some general properties of losslessbirefringent networks.Journal of the Optical Society of America,1966,56(7):943~951
[3] Sharp G D,Birge J R.Retarder stack technology for color manipulation.SID Symposium,1999:1072(1)~1072(4)