[1] Tang Y, Pei J, Ni Y, Pan L, Hu H, Zhang B. Multi-level read-only recording using signal waveform modulation. Optics Express, 2008, 16(9): 6156–6162

[2] Wang H Q, Xu H Z, Pan L F, Liu H L. Read channel for signal waveform modulation multi-level disc. Chinese Physics B, 2010, 19(12): 124216

[3] Coene W M. Two-dimensional optical storage. In: O’Neill M, Miyagawa N, eds. Proceedings of Optical Data Storage 2003. 2003, 90–92

[4] Coene W M, Bruls D M, Immink A, van de Lee A M, Hekstra A P, Riani J, van Beneden S, Ciacci M. Two-dimensional optical storage. In: Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP’05). 2005, 5: 749–752

[5] van Beneden S.System Characterization and Reception Techniques for Two-Dimensional Optical Storage. Eindhoven: Technische Universiteit Eindhoven, 2008

[6] Boamfa M I, Neijzen J H M. Two-dimensional optical storage mastering: adding a new dimension to liquid immersion mastering. Japanese Journal of Applied Physics, 2005, 44(5B 5S): 3583–3586

[7] Takeda M, Furuki M, Yamamoto M, Shinoda M, Saito K, Aki Y, Kawase H, Koizumi M, Miyokawa T, Mutou M, Handa N. Progress in electron beam mastering of 100 Gbit/inch2 density disc. Japanese Journal of Applied Physics, 2004, 43(7B 7S): 5044–5046

[8] Bouwhuis G, Braat J, Huijser A, Pasman G, van Rosmalen, Schouhamer-Immink K. Principles of Optical Disc Systems. Bristol: Adam Hilger Ltd., 1984

[9] Cheng X, Jia H, Xu D. Vector diffraction analysis of optical disk readout. Applied Optics, 2000, 39(34): 6436–6440

[10] Hophins H H. Diffraction theory of laser read-out systems for optical video discs. JOSA, 1979, 69(1): 4–24

[11] Coene W M. Nonlinear signal-processing model for scalar diffraction in optical recording. Applied Optics, 2003, 42(32): 6525–6535

[12] Dirac P A M. The Principles of Quantum Mechanics. Oxford: Oxford University Press, 1981