[1] JOHN S. Strong localization of photons in certain disordered dielectric superlattices[J]. Physical Review Letters, 58, 2486-2489(1987).

[2] YABLONOVITCH E. Inhibited spontaneous emission in solid-state physics and electronics[J]. Physical Review Letters, 58, 2059-2062(1987).

[3] KESLER M P, MALONEY J G, SHIRLEY B L, et al. Antenna design with the use of photonic band-gap materials as all-dielectric planar reflectors[J]. Microwave and Optical Technology Letters, 11, 169-174(2015).

[4] LUO C Y, JOHNSON S G, JOANNOPOULOS J D, et al. All-angle negative refraction without negative effective index[J]. Physical Review B, 65, 201104(R)(2002).

[7] LIANG W Y, CHEN J F, LI Z Y. Electrically controlled beam steering with wide deflection angles in liquid crystal photonic crystals[J]. Journal of Optics, 20, 075106(2018).

[8] LIU J X, RU G Z, JIANG X Y. Beam propagation in the photonic crystal of the local super-collimation regions[J]. Optics Express, 27, 32823-32834(2019).

[9] [9] JIANG X Y, LI W, ZHANG X G, et al. Ultrahighresolution photoniccrystal superprism method f designing the same: US, 10274642B2[P]. 20190430.

[10] CHEN J F, LIANG W Y, LI Z Y. Strong coupling of topological edge states enabling group-dispersionless slow light in magneto-optical photonic crystals[J]. Physical Review B, 99, 014103(2019).

[11] CENTENO E, CASSAGNE D. Graded photonic crystals[J]. Optics Letters, 30, 2278-2280(2005).

[12] SINGH B K, BAMBOLE V, TIWARI S, et al. Photonic band gap consequences in one-dimensional exponential graded index photonic crystals[J]. Optik, 240, 166854(2021).

[13] ZHU Z C, LIU B, ZHANG F, et al. Improved light output from thick β-Ga₂O₃ scintillation crystals via graded-refractive-index photonic crystals[J]. Optics Express, 29, 18646-18653(2021).

[14] LI Y H, FU Y Q, MININ O V, et al. Ultra-sharp nanofocusing of graded index photonic crystal-based lenses perforated with optimized single defect[J]. Optical Materials Express, 6, 2628-2636(2016).

[15] REZAEI B, GIDEN I H, KURT H. Tuning light focusing with liquid crystal infiltrated graded index photonic crystals[J]. Optics Communications, 382, 28-35(2017).

[16] [16] GOOCH J W. Snell''s law[M]GOOCH J W. Encyclopedic Dictionary of Polymers. New Yk: Springer, 2010.

[17] LI Y J. Focal shifts in diffracted converging electromagnetic waves. I. Kirchhoff theory[J]. Journal of the Optical Society of America A, 22, 68-76(2005).

[18] WANG H S, WANG T B. Refractive index sensor utilizing thermo-optic effect of silicon waveguide[J]. Optik, 127, 6407-6411(2016).