[2] Kiyoshi Nosu, Hideki Ishio, Kunio Hashimoto. Multireflection optical multi/demultiplexer using interference filters[J]. Electron. Lett., 1979, 15(14): 414~415
[3] Costich V R. Reduction of polarization effects in interference coatings[J]. Appl. Opt., 1970, 9(4): 866~870
[4] Mahlein H F. Non-polarizing beam splitters[J]. Optica Acta, 1974, 21(7): 577~583
[5] Thelen A. Nonpolarizing interference films inside a glass cube[J]. Appl. Opt., 1976, 15(12): 2983~2985
[6] Thelen A. Avoidance or enhancement of polarization in multilayers[J]. J. Opt. Soc. Am., 1980, 70(1): 118~121
[7] Thelen A. Nonpolarizing edge filters[J]. J. Opt. Soc. Am., 1981, 71(3): 309~314
[10] Macleod H A. Thin-Film Optical Filters[M]. Bristol and Philadelphia: Institute of Physics Publishing, Third Edition, 2001. Chapter8.4, 368~377