F. Sun, B. Zheng, H. Chen, W. Jiang, S. Guo, Y. Liu, Y. Ma, and S. He, “Transformation optics: from classic theory and applications to its new branches,” Laser Photon. Rev. 11, 1700034 (2017).

[Crossref]

F. Sun and S. He, “Optic-null space medium for cover-up cloaking without any negative refraction index materials,” Sci. Rep. 6, 29280 (2016).

[Crossref]

F. Sun and S. He, “Overlapping illusions by transformation optics without any negative refraction material,” Sci. Rep. 6, 19130 (2016).

[Crossref]

F. Sun and S. He, “Optical surface transformation: changing the optical surface by homogeneous optic-null medium at will,” Sci. Rep. 5, 16032 (2015).

[Crossref]

F. Sun and S. He, “Homogenous optic-null medium performs as optical surface transformation,” Prog. Electromagn. Res. 151, 169–173 (2015).

[Crossref]

M. M. Sadeghi, S. Li, L. Xu, B. Hou, and H. Chen, “Transformation optics with Fabry–Pérot resonances,” Sci. Rep. 5, 8680 (2015).

[Crossref]

J. Luo and Y. Lai, “Anisotropic zero-index waveguide with arbitrary shapes,” Sci. Rep. 4, 5875 (2014).

[Crossref]

H. Xu, H. Sun, and B. Zhang, “Waveguide design and application with transformation optics,” Sci. China Inf. Sci. 56, 1–11 (2013).

[Crossref]

J. S. Mei, Q. Wu, and K. Zhang, “Design of electromagnetic refractor and waveguide bends using complementary medium,” Physica B 426, 150–154 (2013).

[Crossref]

L. Huang, X. Chen, B. Ni, G. Li, X. Wang, Z. Li, and W. Lu, “A general transformation for compact waveguide coupler by using homogeneous media,” Photon. Nanostr. Fundam. Appl. 11, 115–122 (2013).

[Crossref]

Y. Wang, D. H. Zhang, J. Wang, F. Qin, D. Li, and Z. Xu, “Design of sharp bends with transformation plasmonics,” Appl. Phys. A 112, 549–553 (2013).

[Crossref]

F. Sun, Y. G. Ma, X. Ge, and S. He, “Super-thin Mikaelian’s lens of small index as a beam compressor with an extremely high compression ratio,” Opt. Express 21, 7328–7336 (2013).

[Crossref]

Q. He, S. Xiao, X. Li, and L. Zhou, “Optic-null medium: realization and applications,” Opt. Express 21, 28948–28959 (2013).

[Crossref]

H. Xu, B. Zhang, T. Yu, G. Barbastathis, and H. Sun, “Dielectric waveguide bending adapter with ideal transmission: practical design strategy of area-preserving affine transformation optics,” J. Opt. Soc. Am. B 29, 1287–1290 (2012).

[Crossref]

H. F. Ma, J. H. Shi, B. G. Cai, and T. J. Cui, “Total transmission and super reflection realized by anisotropic zero-index materials,” New J. Phys. 14, 123010 (2012).

[Crossref]

S. Xu, X. Cheng, S. Xi, R. Zhang, H. O. Moser, Z. Shen, Y. Xu, Z. Huang, X. Zhang, F. Yu, B. Zhang, and H. Chen, “Experimental demonstration of a free-space cylindrical cloak without superluminal propagation,” Phys. Rev. Lett. 109, 223903 (2012).

[Crossref]

T. Han, W. Ding, C. Qiu, and X. Tang, “All-dielectric tapered waveguide bender with homogeneous loading, arbitrary bending and simplified geometry,” J. Electromagn. Waves 26, 729–736 (2012).

[Crossref]

J. Luo, P. Xu, H. Chen, B. Hou, L. Gao, and Y. Lai, “Realizing almost perfect bending waveguides with anisotropic epsilon-near-zero metamaterials,” Appl. Phys. Lett. 100, 221903 (2012).

[Crossref]

H. F. Ma, J. H. Shi, W. X. Jiang, and T. J. Cui, “Experimental realization of bending waveguide using anisotropic zero-index materials,” Appl. Phys. Lett. 101, 253513 (2012).

[Crossref]

A. V. Kildishev and V. M. Shalaev, “Transformation optics and metamaterials,” Phys. Usp. 54, 53–63 (2011).

[Crossref]

X. Huang, Y. Lai, Z. H. Hang, H. Zheng, and C. T. Chan, “Dirac cones induced by accidental degeneracy in photonic crystals and zero-refractive-index materials,” Nat. Mater. 10, 582–586 (2011).

[Crossref]

H. Chen, L. Huang, X. Cheng, and H. Wang, “Magnetic properties of metamaterial composed of closed rings,” Prog. Electromagn. Res. 115, 317–326 (2011).

[Crossref]

T. Han, C. W. Qiu, and X. Tang, “Adaptive waveguide bends with homogeneous, nonmagnetic, and isotropic materials,” Opt. Lett. 36, 181–183 (2011).

[Crossref]

T. Han, C. W. Qiu, J. W. Dong, X. Tang, and S. Zouhdi, “Homogeneous and isotropic bends to tunnel waves through multiple different/equal waveguides along arbitrary directions,” Opt. Express 19, 13020–13030 (2011).

[Crossref]

H. Chen, C. T. Chan, and P. Sheng, “Transformation optics and metamaterials,” Nat. Mater. 9, 387–396 (2010).

[Crossref]

B. Edwards, A. Alù, M. E. Young, M. Silveirinha, and N. Engheta, “Experimental verification of epsilon-near-zero metamaterial coupling and energy squeezing using a microwave waveguide,” Phys. Rev. Lett. 100, 033903 (2008).

[Crossref]

R. Liu, Q. Cheng, T. Hand, J. J. Mock, T. J. Cui, S. A. Cummer, and D. R. Smith, “Experimental demonstration of electromagnetic tunneling through an epsilon-near-zero metamaterial at microwave frequencies,” Phys. Rev. Lett. 100, 023903 (2008).

[Crossref]

D. A. Roberts, M. Rahm, J. B. Pendry, and D. R. Smith, “Transformation-optical design of sharp waveguide bends and corners,” Appl. Phys. Lett. 93, 251111 (2008).

[Crossref]

W. X. Jiang, T. J. Cui, X. Y. Zhou, X. M. Yang, and Q. Cheng, “Arbitrary bending of electromagnetic waves using realizable inhomogeneous and anisotropic materials,” Phys. Rev. E 78, 066607 (2008).

[Crossref]

J. Huangfu, S. Xi, F. Kong, J. Zhang, H. Chen, D. Wang, B. Wu, L. Ran, and J. A. Kong, “Application of coordinate transformation in bent waveguides,” J. Appl. Phys. 104, 014502 (2008).

[Crossref]

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314, 977–980 (2006).

[Crossref]

J. B. Pendry, D. Schurig, and D. R. Smith, “Controlling electromagnetic fields,” Science 312, 1780–1782 (2006).

[Crossref]

M. Silveirinha and N. Engheta, “Tunneling of electromagnetic energy through subwavelength channels and bends using e-near-zero materials,” Phys. Rev. Lett. 97, 157403 (2006).

[Crossref]

G. Veronis and S. Fan, “Bends and splitters in metal-dielectric-metal subwavelength plasmonic waveguides,” Appl. Phys. Lett. 87, 131102 (2005).

[Crossref]

J. B. Pendry, A. J. Holden, D. J. Robbins, and W. J. Stewart, “Low frequency plasmons in thin-wire structures,” J. Phys. Condens. Matter 10, 4785–4809 (1998).

[Crossref]

A. Mekis, J. C. Chen, I. Kurland, S. Fan, P. R. Villeneuve, and J. D. Joannopoulos, “High transmission through sharp bends in photonic crystal waveguides,” Phys. Rev. Lett. 77, 3787–3790 (1996).

[Crossref]

B. Edwards, A. Alù, M. E. Young, M. Silveirinha, and N. Engheta, “Experimental verification of epsilon-near-zero metamaterial coupling and energy squeezing using a microwave waveguide,” Phys. Rev. Lett. 100, 033903 (2008).

[Crossref]

H. F. Ma, J. H. Shi, B. G. Cai, and T. J. Cui, “Total transmission and super reflection realized by anisotropic zero-index materials,” New J. Phys. 14, 123010 (2012).

[Crossref]

X. Huang, Y. Lai, Z. H. Hang, H. Zheng, and C. T. Chan, “Dirac cones induced by accidental degeneracy in photonic crystals and zero-refractive-index materials,” Nat. Mater. 10, 582–586 (2011).

[Crossref]

H. Chen, C. T. Chan, and P. Sheng, “Transformation optics and metamaterials,” Nat. Mater. 9, 387–396 (2010).

[Crossref]

F. Sun, B. Zheng, H. Chen, W. Jiang, S. Guo, Y. Liu, Y. Ma, and S. He, “Transformation optics: from classic theory and applications to its new branches,” Laser Photon. Rev. 11, 1700034 (2017).

[Crossref]

M. M. Sadeghi, S. Li, L. Xu, B. Hou, and H. Chen, “Transformation optics with Fabry–Pérot resonances,” Sci. Rep. 5, 8680 (2015).

[Crossref]

J. Luo, P. Xu, H. Chen, B. Hou, L. Gao, and Y. Lai, “Realizing almost perfect bending waveguides with anisotropic epsilon-near-zero metamaterials,” Appl. Phys. Lett. 100, 221903 (2012).

[Crossref]

S. Xu, X. Cheng, S. Xi, R. Zhang, H. O. Moser, Z. Shen, Y. Xu, Z. Huang, X. Zhang, F. Yu, B. Zhang, and H. Chen, “Experimental demonstration of a free-space cylindrical cloak without superluminal propagation,” Phys. Rev. Lett. 109, 223903 (2012).

[Crossref]

H. Chen, L. Huang, X. Cheng, and H. Wang, “Magnetic properties of metamaterial composed of closed rings,” Prog. Electromagn. Res. 115, 317–326 (2011).

[Crossref]

H. Chen, C. T. Chan, and P. Sheng, “Transformation optics and metamaterials,” Nat. Mater. 9, 387–396 (2010).

[Crossref]

J. Huangfu, S. Xi, F. Kong, J. Zhang, H. Chen, D. Wang, B. Wu, L. Ran, and J. A. Kong, “Application of coordinate transformation in bent waveguides,” J. Appl. Phys. 104, 014502 (2008).

[Crossref]

A. Mekis, J. C. Chen, I. Kurland, S. Fan, P. R. Villeneuve, and J. D. Joannopoulos, “High transmission through sharp bends in photonic crystal waveguides,” Phys. Rev. Lett. 77, 3787–3790 (1996).

[Crossref]

L. Huang, X. Chen, B. Ni, G. Li, X. Wang, Z. Li, and W. Lu, “A general transformation for compact waveguide coupler by using homogeneous media,” Photon. Nanostr. Fundam. Appl. 11, 115–122 (2013).

[Crossref]

W. X. Jiang, T. J. Cui, X. Y. Zhou, X. M. Yang, and Q. Cheng, “Arbitrary bending of electromagnetic waves using realizable inhomogeneous and anisotropic materials,” Phys. Rev. E 78, 066607 (2008).

[Crossref]

R. Liu, Q. Cheng, T. Hand, J. J. Mock, T. J. Cui, S. A. Cummer, and D. R. Smith, “Experimental demonstration of electromagnetic tunneling through an epsilon-near-zero metamaterial at microwave frequencies,” Phys. Rev. Lett. 100, 023903 (2008).

[Crossref]

S. Xu, X. Cheng, S. Xi, R. Zhang, H. O. Moser, Z. Shen, Y. Xu, Z. Huang, X. Zhang, F. Yu, B. Zhang, and H. Chen, “Experimental demonstration of a free-space cylindrical cloak without superluminal propagation,” Phys. Rev. Lett. 109, 223903 (2012).

[Crossref]

H. Chen, L. Huang, X. Cheng, and H. Wang, “Magnetic properties of metamaterial composed of closed rings,” Prog. Electromagn. Res. 115, 317–326 (2011).

[Crossref]

H. F. Ma, J. H. Shi, W. X. Jiang, and T. J. Cui, “Experimental realization of bending waveguide using anisotropic zero-index materials,” Appl. Phys. Lett. 101, 253513 (2012).

[Crossref]

H. F. Ma, J. H. Shi, B. G. Cai, and T. J. Cui, “Total transmission and super reflection realized by anisotropic zero-index materials,” New J. Phys. 14, 123010 (2012).

[Crossref]

Z. L. Mei and T. J. Cui, “Arbitrary bending of electromagnetic waves using isotropic materials,” J. Appl. Phys. 105, 104913 (2009).

[Crossref]

R. Liu, Q. Cheng, T. Hand, J. J. Mock, T. J. Cui, S. A. Cummer, and D. R. Smith, “Experimental demonstration of electromagnetic tunneling through an epsilon-near-zero metamaterial at microwave frequencies,” Phys. Rev. Lett. 100, 023903 (2008).

[Crossref]

W. X. Jiang, T. J. Cui, X. Y. Zhou, X. M. Yang, and Q. Cheng, “Arbitrary bending of electromagnetic waves using realizable inhomogeneous and anisotropic materials,” Phys. Rev. E 78, 066607 (2008).

[Crossref]

R. Liu, Q. Cheng, T. Hand, J. J. Mock, T. J. Cui, S. A. Cummer, and D. R. Smith, “Experimental demonstration of electromagnetic tunneling through an epsilon-near-zero metamaterial at microwave frequencies,” Phys. Rev. Lett. 100, 023903 (2008).

[Crossref]

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314, 977–980 (2006).

[Crossref]

T. Han, W. Ding, C. Qiu, and X. Tang, “All-dielectric tapered waveguide bender with homogeneous loading, arbitrary bending and simplified geometry,” J. Electromagn. Waves 26, 729–736 (2012).

[Crossref]

B. Edwards, A. Alù, M. E. Young, M. Silveirinha, and N. Engheta, “Experimental verification of epsilon-near-zero metamaterial coupling and energy squeezing using a microwave waveguide,” Phys. Rev. Lett. 100, 033903 (2008).

[Crossref]

B. Edwards, A. Alù, M. E. Young, M. Silveirinha, and N. Engheta, “Experimental verification of epsilon-near-zero metamaterial coupling and energy squeezing using a microwave waveguide,” Phys. Rev. Lett. 100, 033903 (2008).

[Crossref]

M. Silveirinha and N. Engheta, “Tunneling of electromagnetic energy through subwavelength channels and bends using e-near-zero materials,” Phys. Rev. Lett. 97, 157403 (2006).

[Crossref]

G. Veronis and S. Fan, “Bends and splitters in metal-dielectric-metal subwavelength plasmonic waveguides,” Appl. Phys. Lett. 87, 131102 (2005).

[Crossref]

A. Mekis, J. C. Chen, I. Kurland, S. Fan, P. R. Villeneuve, and J. D. Joannopoulos, “High transmission through sharp bends in photonic crystal waveguides,” Phys. Rev. Lett. 77, 3787–3790 (1996).

[Crossref]

J. Luo, P. Xu, H. Chen, B. Hou, L. Gao, and Y. Lai, “Realizing almost perfect bending waveguides with anisotropic epsilon-near-zero metamaterials,” Appl. Phys. Lett. 100, 221903 (2012).

[Crossref]

F. Sun, B. Zheng, H. Chen, W. Jiang, S. Guo, Y. Liu, Y. Ma, and S. He, “Transformation optics: from classic theory and applications to its new branches,” Laser Photon. Rev. 11, 1700034 (2017).

[Crossref]

T. Han, W. Ding, C. Qiu, and X. Tang, “All-dielectric tapered waveguide bender with homogeneous loading, arbitrary bending and simplified geometry,” J. Electromagn. Waves 26, 729–736 (2012).

[Crossref]

T. Han, C. W. Qiu, J. W. Dong, X. Tang, and S. Zouhdi, “Homogeneous and isotropic bends to tunnel waves through multiple different/equal waveguides along arbitrary directions,” Opt. Express 19, 13020–13030 (2011).

[Crossref]

T. Han, C. W. Qiu, and X. Tang, “Adaptive waveguide bends with homogeneous, nonmagnetic, and isotropic materials,” Opt. Lett. 36, 181–183 (2011).

[Crossref]

R. Liu, Q. Cheng, T. Hand, J. J. Mock, T. J. Cui, S. A. Cummer, and D. R. Smith, “Experimental demonstration of electromagnetic tunneling through an epsilon-near-zero metamaterial at microwave frequencies,” Phys. Rev. Lett. 100, 023903 (2008).

[Crossref]

X. Huang, Y. Lai, Z. H. Hang, H. Zheng, and C. T. Chan, “Dirac cones induced by accidental degeneracy in photonic crystals and zero-refractive-index materials,” Nat. Mater. 10, 582–586 (2011).

[Crossref]

F. Sun, B. Zheng, H. Chen, W. Jiang, S. Guo, Y. Liu, Y. Ma, and S. He, “Transformation optics: from classic theory and applications to its new branches,” Laser Photon. Rev. 11, 1700034 (2017).

[Crossref]

F. Sun and S. He, “Overlapping illusions by transformation optics without any negative refraction material,” Sci. Rep. 6, 19130 (2016).

[Crossref]

F. Sun and S. He, “Optic-null space medium for cover-up cloaking without any negative refraction index materials,” Sci. Rep. 6, 29280 (2016).

[Crossref]

F. Sun and S. He, “Homogenous optic-null medium performs as optical surface transformation,” Prog. Electromagn. Res. 151, 169–173 (2015).

[Crossref]

F. Sun and S. He, “Optical surface transformation: changing the optical surface by homogeneous optic-null medium at will,” Sci. Rep. 5, 16032 (2015).

[Crossref]

F. Sun, Y. G. Ma, X. Ge, and S. He, “Super-thin Mikaelian’s lens of small index as a beam compressor with an extremely high compression ratio,” Opt. Express 21, 7328–7336 (2013).

[Crossref]

J. B. Pendry, A. J. Holden, D. J. Robbins, and W. J. Stewart, “Low frequency plasmons in thin-wire structures,” J. Phys. Condens. Matter 10, 4785–4809 (1998).

[Crossref]

M. M. Sadeghi, S. Li, L. Xu, B. Hou, and H. Chen, “Transformation optics with Fabry–Pérot resonances,” Sci. Rep. 5, 8680 (2015).

[Crossref]

J. Luo, P. Xu, H. Chen, B. Hou, L. Gao, and Y. Lai, “Realizing almost perfect bending waveguides with anisotropic epsilon-near-zero metamaterials,” Appl. Phys. Lett. 100, 221903 (2012).

[Crossref]

L. Huang, X. Chen, B. Ni, G. Li, X. Wang, Z. Li, and W. Lu, “A general transformation for compact waveguide coupler by using homogeneous media,” Photon. Nanostr. Fundam. Appl. 11, 115–122 (2013).

[Crossref]

H. Chen, L. Huang, X. Cheng, and H. Wang, “Magnetic properties of metamaterial composed of closed rings,” Prog. Electromagn. Res. 115, 317–326 (2011).

[Crossref]

X. Huang, Y. Lai, Z. H. Hang, H. Zheng, and C. T. Chan, “Dirac cones induced by accidental degeneracy in photonic crystals and zero-refractive-index materials,” Nat. Mater. 10, 582–586 (2011).

[Crossref]

S. Xu, X. Cheng, S. Xi, R. Zhang, H. O. Moser, Z. Shen, Y. Xu, Z. Huang, X. Zhang, F. Yu, B. Zhang, and H. Chen, “Experimental demonstration of a free-space cylindrical cloak without superluminal propagation,” Phys. Rev. Lett. 109, 223903 (2012).

[Crossref]

J. Huangfu, S. Xi, F. Kong, J. Zhang, H. Chen, D. Wang, B. Wu, L. Ran, and J. A. Kong, “Application of coordinate transformation in bent waveguides,” J. Appl. Phys. 104, 014502 (2008).

[Crossref]

F. Sun, B. Zheng, H. Chen, W. Jiang, S. Guo, Y. Liu, Y. Ma, and S. He, “Transformation optics: from classic theory and applications to its new branches,” Laser Photon. Rev. 11, 1700034 (2017).

[Crossref]

H. F. Ma, J. H. Shi, W. X. Jiang, and T. J. Cui, “Experimental realization of bending waveguide using anisotropic zero-index materials,” Appl. Phys. Lett. 101, 253513 (2012).

[Crossref]

W. X. Jiang, T. J. Cui, X. Y. Zhou, X. M. Yang, and Q. Cheng, “Arbitrary bending of electromagnetic waves using realizable inhomogeneous and anisotropic materials,” Phys. Rev. E 78, 066607 (2008).

[Crossref]

A. Mekis, J. C. Chen, I. Kurland, S. Fan, P. R. Villeneuve, and J. D. Joannopoulos, “High transmission through sharp bends in photonic crystal waveguides,” Phys. Rev. Lett. 77, 3787–3790 (1996).

[Crossref]

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314, 977–980 (2006).

[Crossref]

A. V. Kildishev and V. M. Shalaev, “Transformation optics and metamaterials,” Phys. Usp. 54, 53–63 (2011).

[Crossref]

J. Huangfu, S. Xi, F. Kong, J. Zhang, H. Chen, D. Wang, B. Wu, L. Ran, and J. A. Kong, “Application of coordinate transformation in bent waveguides,” J. Appl. Phys. 104, 014502 (2008).

[Crossref]

J. Huangfu, S. Xi, F. Kong, J. Zhang, H. Chen, D. Wang, B. Wu, L. Ran, and J. A. Kong, “Application of coordinate transformation in bent waveguides,” J. Appl. Phys. 104, 014502 (2008).

[Crossref]

A. Mekis, J. C. Chen, I. Kurland, S. Fan, P. R. Villeneuve, and J. D. Joannopoulos, “High transmission through sharp bends in photonic crystal waveguides,” Phys. Rev. Lett. 77, 3787–3790 (1996).

[Crossref]

J. Luo and Y. Lai, “Anisotropic zero-index waveguide with arbitrary shapes,” Sci. Rep. 4, 5875 (2014).

[Crossref]

J. Luo, P. Xu, H. Chen, B. Hou, L. Gao, and Y. Lai, “Realizing almost perfect bending waveguides with anisotropic epsilon-near-zero metamaterials,” Appl. Phys. Lett. 100, 221903 (2012).

[Crossref]

X. Huang, Y. Lai, Z. H. Hang, H. Zheng, and C. T. Chan, “Dirac cones induced by accidental degeneracy in photonic crystals and zero-refractive-index materials,” Nat. Mater. 10, 582–586 (2011).

[Crossref]

Y. Wang, D. H. Zhang, J. Wang, F. Qin, D. Li, and Z. Xu, “Design of sharp bends with transformation plasmonics,” Appl. Phys. A 112, 549–553 (2013).

[Crossref]

L. Huang, X. Chen, B. Ni, G. Li, X. Wang, Z. Li, and W. Lu, “A general transformation for compact waveguide coupler by using homogeneous media,” Photon. Nanostr. Fundam. Appl. 11, 115–122 (2013).

[Crossref]

M. M. Sadeghi, S. Li, L. Xu, B. Hou, and H. Chen, “Transformation optics with Fabry–Pérot resonances,” Sci. Rep. 5, 8680 (2015).

[Crossref]

L. Huang, X. Chen, B. Ni, G. Li, X. Wang, Z. Li, and W. Lu, “A general transformation for compact waveguide coupler by using homogeneous media,” Photon. Nanostr. Fundam. Appl. 11, 115–122 (2013).

[Crossref]

R. Liu, Q. Cheng, T. Hand, J. J. Mock, T. J. Cui, S. A. Cummer, and D. R. Smith, “Experimental demonstration of electromagnetic tunneling through an epsilon-near-zero metamaterial at microwave frequencies,” Phys. Rev. Lett. 100, 023903 (2008).

[Crossref]

F. Sun, B. Zheng, H. Chen, W. Jiang, S. Guo, Y. Liu, Y. Ma, and S. He, “Transformation optics: from classic theory and applications to its new branches,” Laser Photon. Rev. 11, 1700034 (2017).

[Crossref]

L. Huang, X. Chen, B. Ni, G. Li, X. Wang, Z. Li, and W. Lu, “A general transformation for compact waveguide coupler by using homogeneous media,” Photon. Nanostr. Fundam. Appl. 11, 115–122 (2013).

[Crossref]

J. Luo and Y. Lai, “Anisotropic zero-index waveguide with arbitrary shapes,” Sci. Rep. 4, 5875 (2014).

[Crossref]

J. Luo, P. Xu, H. Chen, B. Hou, L. Gao, and Y. Lai, “Realizing almost perfect bending waveguides with anisotropic epsilon-near-zero metamaterials,” Appl. Phys. Lett. 100, 221903 (2012).

[Crossref]

H. F. Ma, J. H. Shi, W. X. Jiang, and T. J. Cui, “Experimental realization of bending waveguide using anisotropic zero-index materials,” Appl. Phys. Lett. 101, 253513 (2012).

[Crossref]

H. F. Ma, J. H. Shi, B. G. Cai, and T. J. Cui, “Total transmission and super reflection realized by anisotropic zero-index materials,” New J. Phys. 14, 123010 (2012).

[Crossref]

F. Sun, B. Zheng, H. Chen, W. Jiang, S. Guo, Y. Liu, Y. Ma, and S. He, “Transformation optics: from classic theory and applications to its new branches,” Laser Photon. Rev. 11, 1700034 (2017).

[Crossref]

J. S. Mei, Q. Wu, and K. Zhang, “Design of electromagnetic refractor and waveguide bends using complementary medium,” Physica B 426, 150–154 (2013).

[Crossref]

Z. L. Mei and T. J. Cui, “Arbitrary bending of electromagnetic waves using isotropic materials,” J. Appl. Phys. 105, 104913 (2009).

[Crossref]

A. Mekis, J. C. Chen, I. Kurland, S. Fan, P. R. Villeneuve, and J. D. Joannopoulos, “High transmission through sharp bends in photonic crystal waveguides,” Phys. Rev. Lett. 77, 3787–3790 (1996).

[Crossref]

R. Liu, Q. Cheng, T. Hand, J. J. Mock, T. J. Cui, S. A. Cummer, and D. R. Smith, “Experimental demonstration of electromagnetic tunneling through an epsilon-near-zero metamaterial at microwave frequencies,” Phys. Rev. Lett. 100, 023903 (2008).

[Crossref]

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314, 977–980 (2006).

[Crossref]

S. Xu, X. Cheng, S. Xi, R. Zhang, H. O. Moser, Z. Shen, Y. Xu, Z. Huang, X. Zhang, F. Yu, B. Zhang, and H. Chen, “Experimental demonstration of a free-space cylindrical cloak without superluminal propagation,” Phys. Rev. Lett. 109, 223903 (2012).

[Crossref]

L. Huang, X. Chen, B. Ni, G. Li, X. Wang, Z. Li, and W. Lu, “A general transformation for compact waveguide coupler by using homogeneous media,” Photon. Nanostr. Fundam. Appl. 11, 115–122 (2013).

[Crossref]

D. A. Roberts, M. Rahm, J. B. Pendry, and D. R. Smith, “Transformation-optical design of sharp waveguide bends and corners,” Appl. Phys. Lett. 93, 251111 (2008).

[Crossref]

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314, 977–980 (2006).

[Crossref]

J. B. Pendry, D. Schurig, and D. R. Smith, “Controlling electromagnetic fields,” Science 312, 1780–1782 (2006).

[Crossref]

J. B. Pendry, A. J. Holden, D. J. Robbins, and W. J. Stewart, “Low frequency plasmons in thin-wire structures,” J. Phys. Condens. Matter 10, 4785–4809 (1998).

[Crossref]

Y. Wang, D. H. Zhang, J. Wang, F. Qin, D. Li, and Z. Xu, “Design of sharp bends with transformation plasmonics,” Appl. Phys. A 112, 549–553 (2013).

[Crossref]

T. Han, W. Ding, C. Qiu, and X. Tang, “All-dielectric tapered waveguide bender with homogeneous loading, arbitrary bending and simplified geometry,” J. Electromagn. Waves 26, 729–736 (2012).

[Crossref]

T. Han, C. W. Qiu, J. W. Dong, X. Tang, and S. Zouhdi, “Homogeneous and isotropic bends to tunnel waves through multiple different/equal waveguides along arbitrary directions,” Opt. Express 19, 13020–13030 (2011).

[Crossref]

T. Han, C. W. Qiu, and X. Tang, “Adaptive waveguide bends with homogeneous, nonmagnetic, and isotropic materials,” Opt. Lett. 36, 181–183 (2011).

[Crossref]

D. A. Roberts, M. Rahm, J. B. Pendry, and D. R. Smith, “Transformation-optical design of sharp waveguide bends and corners,” Appl. Phys. Lett. 93, 251111 (2008).

[Crossref]

J. Huangfu, S. Xi, F. Kong, J. Zhang, H. Chen, D. Wang, B. Wu, L. Ran, and J. A. Kong, “Application of coordinate transformation in bent waveguides,” J. Appl. Phys. 104, 014502 (2008).

[Crossref]

J. B. Pendry, A. J. Holden, D. J. Robbins, and W. J. Stewart, “Low frequency plasmons in thin-wire structures,” J. Phys. Condens. Matter 10, 4785–4809 (1998).

[Crossref]

D. A. Roberts, M. Rahm, J. B. Pendry, and D. R. Smith, “Transformation-optical design of sharp waveguide bends and corners,” Appl. Phys. Lett. 93, 251111 (2008).

[Crossref]

M. M. Sadeghi, S. Li, L. Xu, B. Hou, and H. Chen, “Transformation optics with Fabry–Pérot resonances,” Sci. Rep. 5, 8680 (2015).

[Crossref]

J. B. Pendry, D. Schurig, and D. R. Smith, “Controlling electromagnetic fields,” Science 312, 1780–1782 (2006).

[Crossref]

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314, 977–980 (2006).

[Crossref]

A. V. Kildishev and V. M. Shalaev, “Transformation optics and metamaterials,” Phys. Usp. 54, 53–63 (2011).

[Crossref]

S. Xu, X. Cheng, S. Xi, R. Zhang, H. O. Moser, Z. Shen, Y. Xu, Z. Huang, X. Zhang, F. Yu, B. Zhang, and H. Chen, “Experimental demonstration of a free-space cylindrical cloak without superluminal propagation,” Phys. Rev. Lett. 109, 223903 (2012).

[Crossref]

H. Chen, C. T. Chan, and P. Sheng, “Transformation optics and metamaterials,” Nat. Mater. 9, 387–396 (2010).

[Crossref]

H. F. Ma, J. H. Shi, W. X. Jiang, and T. J. Cui, “Experimental realization of bending waveguide using anisotropic zero-index materials,” Appl. Phys. Lett. 101, 253513 (2012).

[Crossref]

H. F. Ma, J. H. Shi, B. G. Cai, and T. J. Cui, “Total transmission and super reflection realized by anisotropic zero-index materials,” New J. Phys. 14, 123010 (2012).

[Crossref]

B. Edwards, A. Alù, M. E. Young, M. Silveirinha, and N. Engheta, “Experimental verification of epsilon-near-zero metamaterial coupling and energy squeezing using a microwave waveguide,” Phys. Rev. Lett. 100, 033903 (2008).

[Crossref]

M. Silveirinha and N. Engheta, “Tunneling of electromagnetic energy through subwavelength channels and bends using e-near-zero materials,” Phys. Rev. Lett. 97, 157403 (2006).

[Crossref]

D. A. Roberts, M. Rahm, J. B. Pendry, and D. R. Smith, “Transformation-optical design of sharp waveguide bends and corners,” Appl. Phys. Lett. 93, 251111 (2008).

[Crossref]

R. Liu, Q. Cheng, T. Hand, J. J. Mock, T. J. Cui, S. A. Cummer, and D. R. Smith, “Experimental demonstration of electromagnetic tunneling through an epsilon-near-zero metamaterial at microwave frequencies,” Phys. Rev. Lett. 100, 023903 (2008).

[Crossref]

J. B. Pendry, D. Schurig, and D. R. Smith, “Controlling electromagnetic fields,” Science 312, 1780–1782 (2006).

[Crossref]

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314, 977–980 (2006).

[Crossref]

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314, 977–980 (2006).

[Crossref]

J. B. Pendry, A. J. Holden, D. J. Robbins, and W. J. Stewart, “Low frequency plasmons in thin-wire structures,” J. Phys. Condens. Matter 10, 4785–4809 (1998).

[Crossref]

F. Sun, B. Zheng, H. Chen, W. Jiang, S. Guo, Y. Liu, Y. Ma, and S. He, “Transformation optics: from classic theory and applications to its new branches,” Laser Photon. Rev. 11, 1700034 (2017).

[Crossref]

F. Sun and S. He, “Overlapping illusions by transformation optics without any negative refraction material,” Sci. Rep. 6, 19130 (2016).

[Crossref]

F. Sun and S. He, “Optic-null space medium for cover-up cloaking without any negative refraction index materials,” Sci. Rep. 6, 29280 (2016).

[Crossref]

F. Sun and S. He, “Homogenous optic-null medium performs as optical surface transformation,” Prog. Electromagn. Res. 151, 169–173 (2015).

[Crossref]

F. Sun and S. He, “Optical surface transformation: changing the optical surface by homogeneous optic-null medium at will,” Sci. Rep. 5, 16032 (2015).

[Crossref]

F. Sun, Y. G. Ma, X. Ge, and S. He, “Super-thin Mikaelian’s lens of small index as a beam compressor with an extremely high compression ratio,” Opt. Express 21, 7328–7336 (2013).

[Crossref]

H. Xu, H. Sun, and B. Zhang, “Waveguide design and application with transformation optics,” Sci. China Inf. Sci. 56, 1–11 (2013).

[Crossref]

H. Xu, B. Zhang, T. Yu, G. Barbastathis, and H. Sun, “Dielectric waveguide bending adapter with ideal transmission: practical design strategy of area-preserving affine transformation optics,” J. Opt. Soc. Am. B 29, 1287–1290 (2012).

[Crossref]

T. Han, W. Ding, C. Qiu, and X. Tang, “All-dielectric tapered waveguide bender with homogeneous loading, arbitrary bending and simplified geometry,” J. Electromagn. Waves 26, 729–736 (2012).

[Crossref]

T. Han, C. W. Qiu, J. W. Dong, X. Tang, and S. Zouhdi, “Homogeneous and isotropic bends to tunnel waves through multiple different/equal waveguides along arbitrary directions,” Opt. Express 19, 13020–13030 (2011).

[Crossref]

T. Han, C. W. Qiu, and X. Tang, “Adaptive waveguide bends with homogeneous, nonmagnetic, and isotropic materials,” Opt. Lett. 36, 181–183 (2011).

[Crossref]

G. Veronis and S. Fan, “Bends and splitters in metal-dielectric-metal subwavelength plasmonic waveguides,” Appl. Phys. Lett. 87, 131102 (2005).

[Crossref]

A. Mekis, J. C. Chen, I. Kurland, S. Fan, P. R. Villeneuve, and J. D. Joannopoulos, “High transmission through sharp bends in photonic crystal waveguides,” Phys. Rev. Lett. 77, 3787–3790 (1996).

[Crossref]

J. Huangfu, S. Xi, F. Kong, J. Zhang, H. Chen, D. Wang, B. Wu, L. Ran, and J. A. Kong, “Application of coordinate transformation in bent waveguides,” J. Appl. Phys. 104, 014502 (2008).

[Crossref]

H. Chen, L. Huang, X. Cheng, and H. Wang, “Magnetic properties of metamaterial composed of closed rings,” Prog. Electromagn. Res. 115, 317–326 (2011).

[Crossref]

Y. Wang, D. H. Zhang, J. Wang, F. Qin, D. Li, and Z. Xu, “Design of sharp bends with transformation plasmonics,” Appl. Phys. A 112, 549–553 (2013).

[Crossref]

L. Huang, X. Chen, B. Ni, G. Li, X. Wang, Z. Li, and W. Lu, “A general transformation for compact waveguide coupler by using homogeneous media,” Photon. Nanostr. Fundam. Appl. 11, 115–122 (2013).

[Crossref]

Y. Wang, D. H. Zhang, J. Wang, F. Qin, D. Li, and Z. Xu, “Design of sharp bends with transformation plasmonics,” Appl. Phys. A 112, 549–553 (2013).

[Crossref]

J. Huangfu, S. Xi, F. Kong, J. Zhang, H. Chen, D. Wang, B. Wu, L. Ran, and J. A. Kong, “Application of coordinate transformation in bent waveguides,” J. Appl. Phys. 104, 014502 (2008).

[Crossref]

J. S. Mei, Q. Wu, and K. Zhang, “Design of electromagnetic refractor and waveguide bends using complementary medium,” Physica B 426, 150–154 (2013).

[Crossref]

S. Xu, X. Cheng, S. Xi, R. Zhang, H. O. Moser, Z. Shen, Y. Xu, Z. Huang, X. Zhang, F. Yu, B. Zhang, and H. Chen, “Experimental demonstration of a free-space cylindrical cloak without superluminal propagation,” Phys. Rev. Lett. 109, 223903 (2012).

[Crossref]

J. Huangfu, S. Xi, F. Kong, J. Zhang, H. Chen, D. Wang, B. Wu, L. Ran, and J. A. Kong, “Application of coordinate transformation in bent waveguides,” J. Appl. Phys. 104, 014502 (2008).

[Crossref]

H. Xu, H. Sun, and B. Zhang, “Waveguide design and application with transformation optics,” Sci. China Inf. Sci. 56, 1–11 (2013).

[Crossref]

H. Xu, B. Zhang, T. Yu, G. Barbastathis, and H. Sun, “Dielectric waveguide bending adapter with ideal transmission: practical design strategy of area-preserving affine transformation optics,” J. Opt. Soc. Am. B 29, 1287–1290 (2012).

[Crossref]

M. M. Sadeghi, S. Li, L. Xu, B. Hou, and H. Chen, “Transformation optics with Fabry–Pérot resonances,” Sci. Rep. 5, 8680 (2015).

[Crossref]

J. Luo, P. Xu, H. Chen, B. Hou, L. Gao, and Y. Lai, “Realizing almost perfect bending waveguides with anisotropic epsilon-near-zero metamaterials,” Appl. Phys. Lett. 100, 221903 (2012).

[Crossref]

S. Xu, X. Cheng, S. Xi, R. Zhang, H. O. Moser, Z. Shen, Y. Xu, Z. Huang, X. Zhang, F. Yu, B. Zhang, and H. Chen, “Experimental demonstration of a free-space cylindrical cloak without superluminal propagation,” Phys. Rev. Lett. 109, 223903 (2012).

[Crossref]

S. Xu, X. Cheng, S. Xi, R. Zhang, H. O. Moser, Z. Shen, Y. Xu, Z. Huang, X. Zhang, F. Yu, B. Zhang, and H. Chen, “Experimental demonstration of a free-space cylindrical cloak without superluminal propagation,” Phys. Rev. Lett. 109, 223903 (2012).

[Crossref]

Y. Wang, D. H. Zhang, J. Wang, F. Qin, D. Li, and Z. Xu, “Design of sharp bends with transformation plasmonics,” Appl. Phys. A 112, 549–553 (2013).

[Crossref]

W. X. Jiang, T. J. Cui, X. Y. Zhou, X. M. Yang, and Q. Cheng, “Arbitrary bending of electromagnetic waves using realizable inhomogeneous and anisotropic materials,” Phys. Rev. E 78, 066607 (2008).

[Crossref]

B. Edwards, A. Alù, M. E. Young, M. Silveirinha, and N. Engheta, “Experimental verification of epsilon-near-zero metamaterial coupling and energy squeezing using a microwave waveguide,” Phys. Rev. Lett. 100, 033903 (2008).

[Crossref]

S. Xu, X. Cheng, S. Xi, R. Zhang, H. O. Moser, Z. Shen, Y. Xu, Z. Huang, X. Zhang, F. Yu, B. Zhang, and H. Chen, “Experimental demonstration of a free-space cylindrical cloak without superluminal propagation,” Phys. Rev. Lett. 109, 223903 (2012).

[Crossref]

H. Xu, H. Sun, and B. Zhang, “Waveguide design and application with transformation optics,” Sci. China Inf. Sci. 56, 1–11 (2013).

[Crossref]

H. Xu, B. Zhang, T. Yu, G. Barbastathis, and H. Sun, “Dielectric waveguide bending adapter with ideal transmission: practical design strategy of area-preserving affine transformation optics,” J. Opt. Soc. Am. B 29, 1287–1290 (2012).

[Crossref]

S. Xu, X. Cheng, S. Xi, R. Zhang, H. O. Moser, Z. Shen, Y. Xu, Z. Huang, X. Zhang, F. Yu, B. Zhang, and H. Chen, “Experimental demonstration of a free-space cylindrical cloak without superluminal propagation,” Phys. Rev. Lett. 109, 223903 (2012).

[Crossref]

Y. Wang, D. H. Zhang, J. Wang, F. Qin, D. Li, and Z. Xu, “Design of sharp bends with transformation plasmonics,” Appl. Phys. A 112, 549–553 (2013).

[Crossref]

J. Huangfu, S. Xi, F. Kong, J. Zhang, H. Chen, D. Wang, B. Wu, L. Ran, and J. A. Kong, “Application of coordinate transformation in bent waveguides,” J. Appl. Phys. 104, 014502 (2008).

[Crossref]

J. S. Mei, Q. Wu, and K. Zhang, “Design of electromagnetic refractor and waveguide bends using complementary medium,” Physica B 426, 150–154 (2013).

[Crossref]

S. Xu, X. Cheng, S. Xi, R. Zhang, H. O. Moser, Z. Shen, Y. Xu, Z. Huang, X. Zhang, F. Yu, B. Zhang, and H. Chen, “Experimental demonstration of a free-space cylindrical cloak without superluminal propagation,” Phys. Rev. Lett. 109, 223903 (2012).

[Crossref]

S. Xu, X. Cheng, S. Xi, R. Zhang, H. O. Moser, Z. Shen, Y. Xu, Z. Huang, X. Zhang, F. Yu, B. Zhang, and H. Chen, “Experimental demonstration of a free-space cylindrical cloak without superluminal propagation,” Phys. Rev. Lett. 109, 223903 (2012).

[Crossref]

F. Sun, B. Zheng, H. Chen, W. Jiang, S. Guo, Y. Liu, Y. Ma, and S. He, “Transformation optics: from classic theory and applications to its new branches,” Laser Photon. Rev. 11, 1700034 (2017).

[Crossref]

X. Huang, Y. Lai, Z. H. Hang, H. Zheng, and C. T. Chan, “Dirac cones induced by accidental degeneracy in photonic crystals and zero-refractive-index materials,” Nat. Mater. 10, 582–586 (2011).

[Crossref]

W. X. Jiang, T. J. Cui, X. Y. Zhou, X. M. Yang, and Q. Cheng, “Arbitrary bending of electromagnetic waves using realizable inhomogeneous and anisotropic materials,” Phys. Rev. E 78, 066607 (2008).

[Crossref]

Y. Wang, D. H. Zhang, J. Wang, F. Qin, D. Li, and Z. Xu, “Design of sharp bends with transformation plasmonics,” Appl. Phys. A 112, 549–553 (2013).

[Crossref]

G. Veronis and S. Fan, “Bends and splitters in metal-dielectric-metal subwavelength plasmonic waveguides,” Appl. Phys. Lett. 87, 131102 (2005).

[Crossref]

J. Luo, P. Xu, H. Chen, B. Hou, L. Gao, and Y. Lai, “Realizing almost perfect bending waveguides with anisotropic epsilon-near-zero metamaterials,” Appl. Phys. Lett. 100, 221903 (2012).

[Crossref]

H. F. Ma, J. H. Shi, W. X. Jiang, and T. J. Cui, “Experimental realization of bending waveguide using anisotropic zero-index materials,” Appl. Phys. Lett. 101, 253513 (2012).

[Crossref]

D. A. Roberts, M. Rahm, J. B. Pendry, and D. R. Smith, “Transformation-optical design of sharp waveguide bends and corners,” Appl. Phys. Lett. 93, 251111 (2008).

[Crossref]

J. Huangfu, S. Xi, F. Kong, J. Zhang, H. Chen, D. Wang, B. Wu, L. Ran, and J. A. Kong, “Application of coordinate transformation in bent waveguides,” J. Appl. Phys. 104, 014502 (2008).

[Crossref]

Z. L. Mei and T. J. Cui, “Arbitrary bending of electromagnetic waves using isotropic materials,” J. Appl. Phys. 105, 104913 (2009).

[Crossref]

T. Han, W. Ding, C. Qiu, and X. Tang, “All-dielectric tapered waveguide bender with homogeneous loading, arbitrary bending and simplified geometry,” J. Electromagn. Waves 26, 729–736 (2012).

[Crossref]

J. B. Pendry, A. J. Holden, D. J. Robbins, and W. J. Stewart, “Low frequency plasmons in thin-wire structures,” J. Phys. Condens. Matter 10, 4785–4809 (1998).

[Crossref]

F. Sun, B. Zheng, H. Chen, W. Jiang, S. Guo, Y. Liu, Y. Ma, and S. He, “Transformation optics: from classic theory and applications to its new branches,” Laser Photon. Rev. 11, 1700034 (2017).

[Crossref]

X. Huang, Y. Lai, Z. H. Hang, H. Zheng, and C. T. Chan, “Dirac cones induced by accidental degeneracy in photonic crystals and zero-refractive-index materials,” Nat. Mater. 10, 582–586 (2011).

[Crossref]

H. Chen, C. T. Chan, and P. Sheng, “Transformation optics and metamaterials,” Nat. Mater. 9, 387–396 (2010).

[Crossref]

H. F. Ma, J. H. Shi, B. G. Cai, and T. J. Cui, “Total transmission and super reflection realized by anisotropic zero-index materials,” New J. Phys. 14, 123010 (2012).

[Crossref]

D. H. Kwon and D. H. Werner, “Low-index metamaterial designs in the visible spectrum,” Opt. Express 15, 9267–9272 (2007).

[Crossref]

N. I. Landy and W. J. Padilla, “Guiding light with conformal transformations,” Opt. Express 17, 14872–14879 (2009).

[Crossref]

T. Han, C. W. Qiu, J. W. Dong, X. Tang, and S. Zouhdi, “Homogeneous and isotropic bends to tunnel waves through multiple different/equal waveguides along arbitrary directions,” Opt. Express 19, 13020–13030 (2011).

[Crossref]

F. Sun, Y. G. Ma, X. Ge, and S. He, “Super-thin Mikaelian’s lens of small index as a beam compressor with an extremely high compression ratio,” Opt. Express 21, 7328–7336 (2013).

[Crossref]

Q. He, S. Xiao, X. Li, and L. Zhou, “Optic-null medium: realization and applications,” Opt. Express 21, 28948–28959 (2013).

[Crossref]

T. Han, C. W. Qiu, and X. Tang, “Adaptive waveguide bends with homogeneous, nonmagnetic, and isotropic materials,” Opt. Lett. 36, 181–183 (2011).

[Crossref]

T. Shiina, K. Shiraishi, and S. Kawakami, “Waveguide-bend configuration with low-loss characteristic,” Opt. Lett. 11, 736–738 (1986).

[Crossref]

L. Huang, X. Chen, B. Ni, G. Li, X. Wang, Z. Li, and W. Lu, “A general transformation for compact waveguide coupler by using homogeneous media,” Photon. Nanostr. Fundam. Appl. 11, 115–122 (2013).

[Crossref]

W. X. Jiang, T. J. Cui, X. Y. Zhou, X. M. Yang, and Q. Cheng, “Arbitrary bending of electromagnetic waves using realizable inhomogeneous and anisotropic materials,” Phys. Rev. E 78, 066607 (2008).

[Crossref]

A. Mekis, J. C. Chen, I. Kurland, S. Fan, P. R. Villeneuve, and J. D. Joannopoulos, “High transmission through sharp bends in photonic crystal waveguides,” Phys. Rev. Lett. 77, 3787–3790 (1996).

[Crossref]

M. Silveirinha and N. Engheta, “Tunneling of electromagnetic energy through subwavelength channels and bends using e-near-zero materials,” Phys. Rev. Lett. 97, 157403 (2006).

[Crossref]

B. Edwards, A. Alù, M. E. Young, M. Silveirinha, and N. Engheta, “Experimental verification of epsilon-near-zero metamaterial coupling and energy squeezing using a microwave waveguide,” Phys. Rev. Lett. 100, 033903 (2008).

[Crossref]

R. Liu, Q. Cheng, T. Hand, J. J. Mock, T. J. Cui, S. A. Cummer, and D. R. Smith, “Experimental demonstration of electromagnetic tunneling through an epsilon-near-zero metamaterial at microwave frequencies,” Phys. Rev. Lett. 100, 023903 (2008).

[Crossref]

S. Xu, X. Cheng, S. Xi, R. Zhang, H. O. Moser, Z. Shen, Y. Xu, Z. Huang, X. Zhang, F. Yu, B. Zhang, and H. Chen, “Experimental demonstration of a free-space cylindrical cloak without superluminal propagation,” Phys. Rev. Lett. 109, 223903 (2012).

[Crossref]

A. V. Kildishev and V. M. Shalaev, “Transformation optics and metamaterials,” Phys. Usp. 54, 53–63 (2011).

[Crossref]

J. S. Mei, Q. Wu, and K. Zhang, “Design of electromagnetic refractor and waveguide bends using complementary medium,” Physica B 426, 150–154 (2013).

[Crossref]

H. Chen, L. Huang, X. Cheng, and H. Wang, “Magnetic properties of metamaterial composed of closed rings,” Prog. Electromagn. Res. 115, 317–326 (2011).

[Crossref]

F. Sun and S. He, “Homogenous optic-null medium performs as optical surface transformation,” Prog. Electromagn. Res. 151, 169–173 (2015).

[Crossref]

H. Xu, H. Sun, and B. Zhang, “Waveguide design and application with transformation optics,” Sci. China Inf. Sci. 56, 1–11 (2013).

[Crossref]

J. Luo and Y. Lai, “Anisotropic zero-index waveguide with arbitrary shapes,” Sci. Rep. 4, 5875 (2014).

[Crossref]

F. Sun and S. He, “Optic-null space medium for cover-up cloaking without any negative refraction index materials,” Sci. Rep. 6, 29280 (2016).

[Crossref]

F. Sun and S. He, “Overlapping illusions by transformation optics without any negative refraction material,” Sci. Rep. 6, 19130 (2016).

[Crossref]

F. Sun and S. He, “Optical surface transformation: changing the optical surface by homogeneous optic-null medium at will,” Sci. Rep. 5, 16032 (2015).

[Crossref]

M. M. Sadeghi, S. Li, L. Xu, B. Hou, and H. Chen, “Transformation optics with Fabry–Pérot resonances,” Sci. Rep. 5, 8680 (2015).

[Crossref]

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314, 977–980 (2006).

[Crossref]

J. B. Pendry, D. Schurig, and D. R. Smith, “Controlling electromagnetic fields,” Science 312, 1780–1782 (2006).

[Crossref]