[1] B. G. Bovard. Rugate filter theory: an overview[J]. Appl. Opt., 1993, 32(28):5427~5442
[2] W. E. Johnson, R. L. Crane. Introduction to rugate filter technology[C]. SPIE,1993, 2046:88~108
[3] H. Yoda, D. Tanaka, O. Hanaizumi et al.. Rugate filters fabricated by a radio frequency magnetron sputtering system by use of an optical in situ monitoring technique[J]. Appl. Opt., 2006, 45(1):184~190
[4] E. P. Donovan, D. Van Vechten, A. D. F. Kahn et al.. Near infrared rugate filter fabrication by ion beam assisted deposition of Si(1-x)Nx films[J]. Appl. Opt., 1989, 28(14):2940~2944
[9] H. Bartzsch, S. Lange, P. Frach et al.. Graded refractive index layer systems for antireflective coatings and rugate filters deposited by reactive pulse magnetron sputtering[J]. Surf. & Coat. Technol., 2004,180-181:616~620
[11] Yang Jun, Ming Hai, Wang Pei et al.. Application in optical communication of optical films[J]. Optoelectronic Technology & Information, 2003, 16(3):10~14
[12] J. A. Dobrowolski, S. H. C. Piotrowski. Refractive index as a variable in the numerical design of optical thin film systems[J]. Appl. Opt., 1982, 21(8):1502~1509
[14] X. Wang, H. Masumoto, Y. Someno et al.. Helicon plasma deposition of a TiO2/SiO2 multilayer optical filter with graded refractive index profiles[J]. Appl. Phys. Lett., 1998, 72(25):3264~3266
[15] X. Wang, H. Masumoto, Y. Someno et al.. Design and preparation of a 33-layer reflection filter of TiO2-SiO2 system[J]. J. Vac. Sci. Technol. A, 2000, 18(3):933~937
[16] Q. M. Song, F. Huang, M. Li et al.. Graded refractive-index SiOx infrared filters prepared by reactive magnetron sputtering[J]. J. Vac. Sci. Technol. A, 2008, 26(2):265~269
[18] F. C. Lai, M. Li, K. Chen et al.. Substrate temperature effect on the refractive index and a two-step film method to detect small inhomogeneities in optical films[J]. Appl. Opt., 2005, 44(29):6181~6185
[20] W. H. Southwell, R. L. Hall. Rugate filter sidelobe suppression using quintic and rugated quintic matching layers[J]. Appl. Opt., 1989, 28: 2949~2951