Y. He, X. Zhu, D. Mihalache, J. Liu, and Z. Chen,
“Solitons in PT-symmetric optical lattices with spatially periodic
modulation of nonlinearity,” Opt. Commun. 285, 3320–3324
(2012).

[CrossRef]

Y. He, X. Zhu, D. Mihalache, J. Liu, and Z. Chen,
“Lattice solitons in 𝒫𝒯 -symmetric mixed
linear-nonlinear optical lattices,” Phys. Rev. A 85, 013831
(2012).

[CrossRef]

S. Liu, C. Ma, Y. Zhang, and K. Lu, “Bragg
gap solitons in symmetric lattices with competing nonlinearity,”
Opt. Commun. 285, 1934–1939 (2012).

[CrossRef]

L. Chen, R. Li, N. Yang, D. Chen, and L. Li,
“Optical modes in PT-symmetric double-channel waveguides,”
Proc. Romanian Acad. A 13, 46–54 (2012).

S. Nixon, L. Ge, and J. Yang, “Stability
analysis for solitons in 𝒫𝒯 -symmetric optical
lattices,” Phys. Rev. A8 5, 023822 (2012).

[CrossRef]

S. Hu, X. Ma, D. Lu, Y. Zheng, and W. Hu,
“Defect solitons in parity-time-symmetric optical lattices with
nonlocal nonlinearity,” Phys. Rev. A 85, 043826
(2012).

[CrossRef]

Z. Shi, X. Jiang, X. Zhu, and H. Li,
“Bright spatial solitons in defocusing Kerr media with
𝒫𝒯 -symmetric potentials,” Phys. Rev. A 84, 053855
(2011).

[CrossRef]

H. Wang and J. Wang, “Defect solitons in
parity-time periodic potentials,” Opt. Express 19, 4030–4035
(2011).

[CrossRef]
[PubMed]

Z. Lu and Z.-M. Zhang, “Defect solitons in
parity-time symmetric superlattices,” Opt. Express 19,
11457–11462 (2011).

[CrossRef]
[PubMed]

K. Makris, R. El-Ganainy, D. Christodoulides, and
Z. Musslimani, “PT-symmetric periodic optical potentials,”
Int. J. of Theor. Phys. 50, 1019–1041 (2011).

[CrossRef]

F. K. Abdullaev, Y. V. Kartashov, V. V. Konotop,
and D. A. Zezyulin, “Solitons in 𝒫𝒯 -symmetric
nonlinear lattices,” Phys. Rev. A 83, 041805 (2011).

[CrossRef]

D. A. Zezyulin, Y. V. Kartashov, and V. V. Konotop,
“Stability of solitons in PT-symmetric nonlinear
potentials,” EPL-Europhys. Lett. 96, 64003 (2011).

[CrossRef]

C. E. Rüter, K. G. Makris, R. El-Ganainy,
D. N. Christodoulides, M. Segev, and D. Kip, “Observation of
parity-time symmetry in optics,” Nat. Phys. 6, 192–195
(2010).

[CrossRef]

K. Zhou, Z. Guo, J. Wang, and S. Liu,
“Defect modes in defective parity-time symmetric periodic complex
potentials,” Opt. Lett. 35, 2928–2930 (2010).

[CrossRef]
[PubMed]

K. G. Makris, R. El-Ganainy, D. N. Christodoulides,
and Z. H. Musslimani, “𝒫𝒯 -symmetric optical
lattices,” Phys. Rev. A 81, 063807 (2010).

[CrossRef]

A. Guo, G. J. Salamo, D. Duchesne, R. Morandotti,
M. Volatier-Ravat, V. Aimez, G. A. Siviloglou, and D. N. Christodoulides,
“Observation of 𝒫𝒯 -symmetry breaking in complex
optical potentials,” Phys. Rev. Lett. 103, 093902
(2009).

[CrossRef]
[PubMed]

J. Wang, J. Yang, T. J. Alexander, and Y. S.
Kivshar, “Truncated-Bloch-wave solitons in optical
lattices,” Phys. Rev. A 79, 043610 (2009).

[CrossRef]

K. G. Makris, R. El-Ganainy, D. N. Christodoulides, and Z. H. Musslimani, “Beam dynamics in 𝒫𝒯 symmetric optical lattices,” Phys. Rev. Lett. 100, 103904 (2008).

[CrossRef]
[PubMed]

Z. H. Musslimani, K. G. Makris, R. El-Ganainy, and
D. N. Christodoulides, “Optical solitons in 𝒫𝒯
periodic potentials,” Phys. Rev. Lett. 100, 030402
(2008).

[CrossRef]
[PubMed]

J. Wang, F. Ye, L. Dong, T. Cai, and Y.-P. Li,
“Lattice solitons supported by competing cubic-quintic
nonlinearity,” Phys. Lett. A 339, 74–82
(2005).

[CrossRef]

C. M. Bender, D. C. Brody, and H. F. Jones,
“Complex extension of quantum mechanics,” Phys. Rev.
Lett. 89, 270401 (2002).

[CrossRef]

C. M. Bender, G. V. Dunne, and P. N. Meisinger,
“Complex periodic potentials with real band spectra,” Phys.
Lett. A 252, 272–276 (1999).

[CrossRef]

C. M. Bender and S. Boettcher, “Real
spectra in non-Hermitian Hamiltonians having PT symmetry,” Phys.
Rev. Lett.80, 5243–5246 (1998).

[CrossRef]

A. E. Kaplan, “Bistable solitons,”
Phys. Rev. Lett. 55, 1291–1294 (1985).

[CrossRef]
[PubMed]

F. K. Abdullaev, Y. V. Kartashov, V. V. Konotop,
and D. A. Zezyulin, “Solitons in 𝒫𝒯 -symmetric
nonlinear lattices,” Phys. Rev. A 83, 041805 (2011).

[CrossRef]

A. Guo, G. J. Salamo, D. Duchesne, R. Morandotti,
M. Volatier-Ravat, V. Aimez, G. A. Siviloglou, and D. N. Christodoulides,
“Observation of 𝒫𝒯 -symmetry breaking in complex
optical potentials,” Phys. Rev. Lett. 103, 093902
(2009).

[CrossRef]
[PubMed]

J. Wang, J. Yang, T. J. Alexander, and Y. S.
Kivshar, “Truncated-Bloch-wave solitons in optical
lattices,” Phys. Rev. A 79, 043610 (2009).

[CrossRef]

C. M. Bender, D. C. Brody, and H. F. Jones,
“Complex extension of quantum mechanics,” Phys. Rev.
Lett. 89, 270401 (2002).

[CrossRef]

C. M. Bender, G. V. Dunne, and P. N. Meisinger,
“Complex periodic potentials with real band spectra,” Phys.
Lett. A 252, 272–276 (1999).

[CrossRef]

C. M. Bender and S. Boettcher, “Real
spectra in non-Hermitian Hamiltonians having PT symmetry,” Phys.
Rev. Lett.80, 5243–5246 (1998).

[CrossRef]

C. M. Bender and S. Boettcher, “Real
spectra in non-Hermitian Hamiltonians having PT symmetry,” Phys.
Rev. Lett.80, 5243–5246 (1998).

[CrossRef]

C. M. Bender, D. C. Brody, and H. F. Jones,
“Complex extension of quantum mechanics,” Phys. Rev.
Lett. 89, 270401 (2002).

[CrossRef]

J. Wang, F. Ye, L. Dong, T. Cai, and Y.-P. Li,
“Lattice solitons supported by competing cubic-quintic
nonlinearity,” Phys. Lett. A 339, 74–82
(2005).

[CrossRef]

L. Chen, R. Li, N. Yang, D. Chen, and L. Li,
“Optical modes in PT-symmetric double-channel waveguides,”
Proc. Romanian Acad. A 13, 46–54 (2012).

L. Chen, R. Li, N. Yang, D. Chen, and L. Li,
“Optical modes in PT-symmetric double-channel waveguides,”
Proc. Romanian Acad. A 13, 46–54 (2012).

Y. He, X. Zhu, D. Mihalache, J. Liu, and Z. Chen,
“Solitons in PT-symmetric optical lattices with spatially periodic
modulation of nonlinearity,” Opt. Commun. 285, 3320–3324
(2012).

[CrossRef]

Y. He, X. Zhu, D. Mihalache, J. Liu, and Z. Chen,
“Lattice solitons in 𝒫𝒯 -symmetric mixed
linear-nonlinear optical lattices,” Phys. Rev. A 85, 013831
(2012).

[CrossRef]

K. Makris, R. El-Ganainy, D. Christodoulides, and
Z. Musslimani, “PT-symmetric periodic optical potentials,”
Int. J. of Theor. Phys. 50, 1019–1041 (2011).

[CrossRef]

K. G. Makris, R. El-Ganainy, D. N. Christodoulides,
and Z. H. Musslimani, “𝒫𝒯 -symmetric optical
lattices,” Phys. Rev. A 81, 063807 (2010).

[CrossRef]

C. E. Rüter, K. G. Makris, R. El-Ganainy,
D. N. Christodoulides, M. Segev, and D. Kip, “Observation of
parity-time symmetry in optics,” Nat. Phys. 6, 192–195
(2010).

[CrossRef]

A. Guo, G. J. Salamo, D. Duchesne, R. Morandotti,
M. Volatier-Ravat, V. Aimez, G. A. Siviloglou, and D. N. Christodoulides,
“Observation of 𝒫𝒯 -symmetry breaking in complex
optical potentials,” Phys. Rev. Lett. 103, 093902
(2009).

[CrossRef]
[PubMed]

Z. H. Musslimani, K. G. Makris, R. El-Ganainy, and
D. N. Christodoulides, “Optical solitons in 𝒫𝒯
periodic potentials,” Phys. Rev. Lett. 100, 030402
(2008).

[CrossRef]
[PubMed]

K. G. Makris, R. El-Ganainy, D. N. Christodoulides, and Z. H. Musslimani, “Beam dynamics in 𝒫𝒯 symmetric optical lattices,” Phys. Rev. Lett. 100, 103904 (2008).

[CrossRef]
[PubMed]

R. El-Ganainy, K. G. Makris, D. N. Christodoulides,
and Z. H. Musslimani, “Theory of coupled optical PT-symmetric
structures,” Opt. Lett. 32, 2632–2634 (2007).

[CrossRef]
[PubMed]

J. Wang, F. Ye, L. Dong, T. Cai, and Y.-P. Li,
“Lattice solitons supported by competing cubic-quintic
nonlinearity,” Phys. Lett. A 339, 74–82
(2005).

[CrossRef]

A. Guo, G. J. Salamo, D. Duchesne, R. Morandotti,
M. Volatier-Ravat, V. Aimez, G. A. Siviloglou, and D. N. Christodoulides,
“Observation of 𝒫𝒯 -symmetry breaking in complex
optical potentials,” Phys. Rev. Lett. 103, 093902
(2009).

[CrossRef]
[PubMed]

C. M. Bender, G. V. Dunne, and P. N. Meisinger,
“Complex periodic potentials with real band spectra,” Phys.
Lett. A 252, 272–276 (1999).

[CrossRef]

K. Makris, R. El-Ganainy, D. Christodoulides, and
Z. Musslimani, “PT-symmetric periodic optical potentials,”
Int. J. of Theor. Phys. 50, 1019–1041 (2011).

[CrossRef]

K. G. Makris, R. El-Ganainy, D. N. Christodoulides,
and Z. H. Musslimani, “𝒫𝒯 -symmetric optical
lattices,” Phys. Rev. A 81, 063807 (2010).

[CrossRef]

C. E. Rüter, K. G. Makris, R. El-Ganainy,
D. N. Christodoulides, M. Segev, and D. Kip, “Observation of
parity-time symmetry in optics,” Nat. Phys. 6, 192–195
(2010).

[CrossRef]

Z. H. Musslimani, K. G. Makris, R. El-Ganainy, and
D. N. Christodoulides, “Optical solitons in 𝒫𝒯
periodic potentials,” Phys. Rev. Lett. 100, 030402
(2008).

[CrossRef]
[PubMed]

K. G. Makris, R. El-Ganainy, D. N. Christodoulides, and Z. H. Musslimani, “Beam dynamics in 𝒫𝒯 symmetric optical lattices,” Phys. Rev. Lett. 100, 103904 (2008).

[CrossRef]
[PubMed]

R. El-Ganainy, K. G. Makris, D. N. Christodoulides,
and Z. H. Musslimani, “Theory of coupled optical PT-symmetric
structures,” Opt. Lett. 32, 2632–2634 (2007).

[CrossRef]
[PubMed]

S. Nixon, L. Ge, and J. Yang, “Stability
analysis for solitons in 𝒫𝒯 -symmetric optical
lattices,” Phys. Rev. A8 5, 023822 (2012).

[CrossRef]

A. Guo, G. J. Salamo, D. Duchesne, R. Morandotti,
M. Volatier-Ravat, V. Aimez, G. A. Siviloglou, and D. N. Christodoulides,
“Observation of 𝒫𝒯 -symmetry breaking in complex
optical potentials,” Phys. Rev. Lett. 103, 093902
(2009).

[CrossRef]
[PubMed]

Y. He, X. Zhu, D. Mihalache, J. Liu, and Z. Chen,
“Lattice solitons in 𝒫𝒯 -symmetric mixed
linear-nonlinear optical lattices,” Phys. Rev. A 85, 013831
(2012).

[CrossRef]

Y. He, X. Zhu, D. Mihalache, J. Liu, and Z. Chen,
“Solitons in PT-symmetric optical lattices with spatially periodic
modulation of nonlinearity,” Opt. Commun. 285, 3320–3324
(2012).

[CrossRef]

S. Hu, X. Ma, D. Lu, Y. Zheng, and W. Hu,
“Defect solitons in parity-time-symmetric optical lattices with
nonlocal nonlinearity,” Phys. Rev. A 85, 043826
(2012).

[CrossRef]

S. Hu, X. Ma, D. Lu, Y. Zheng, and W. Hu,
“Defect solitons in parity-time-symmetric optical lattices with
nonlocal nonlinearity,” Phys. Rev. A 85, 043826
(2012).

[CrossRef]

Z. Shi, X. Jiang, X. Zhu, and H. Li,
“Bright spatial solitons in defocusing Kerr media with
𝒫𝒯 -symmetric potentials,” Phys. Rev. A 84, 053855
(2011).

[CrossRef]

C. M. Bender, D. C. Brody, and H. F. Jones,
“Complex extension of quantum mechanics,” Phys. Rev.
Lett. 89, 270401 (2002).

[CrossRef]

A. E. Kaplan, “Bistable solitons,”
Phys. Rev. Lett. 55, 1291–1294 (1985).

[CrossRef]
[PubMed]

D. A. Zezyulin, Y. V. Kartashov, and V. V. Konotop,
“Stability of solitons in PT-symmetric nonlinear
potentials,” EPL-Europhys. Lett. 96, 64003 (2011).

[CrossRef]

F. K. Abdullaev, Y. V. Kartashov, V. V. Konotop,
and D. A. Zezyulin, “Solitons in 𝒫𝒯 -symmetric
nonlinear lattices,” Phys. Rev. A 83, 041805 (2011).

[CrossRef]

C. E. Rüter, K. G. Makris, R. El-Ganainy,
D. N. Christodoulides, M. Segev, and D. Kip, “Observation of
parity-time symmetry in optics,” Nat. Phys. 6, 192–195
(2010).

[CrossRef]

J. Wang, J. Yang, T. J. Alexander, and Y. S.
Kivshar, “Truncated-Bloch-wave solitons in optical
lattices,” Phys. Rev. A 79, 043610 (2009).

[CrossRef]

D. A. Zezyulin, Y. V. Kartashov, and V. V. Konotop,
“Stability of solitons in PT-symmetric nonlinear
potentials,” EPL-Europhys. Lett. 96, 64003 (2011).

[CrossRef]

F. K. Abdullaev, Y. V. Kartashov, V. V. Konotop,
and D. A. Zezyulin, “Solitons in 𝒫𝒯 -symmetric
nonlinear lattices,” Phys. Rev. A 83, 041805 (2011).

[CrossRef]

Z. Shi, X. Jiang, X. Zhu, and H. Li,
“Bright spatial solitons in defocusing Kerr media with
𝒫𝒯 -symmetric potentials,” Phys. Rev. A 84, 053855
(2011).

[CrossRef]

L. Chen, R. Li, N. Yang, D. Chen, and L. Li,
“Optical modes in PT-symmetric double-channel waveguides,”
Proc. Romanian Acad. A 13, 46–54 (2012).

L. Chen, R. Li, N. Yang, D. Chen, and L. Li,
“Optical modes in PT-symmetric double-channel waveguides,”
Proc. Romanian Acad. A 13, 46–54 (2012).

J. Wang, F. Ye, L. Dong, T. Cai, and Y.-P. Li,
“Lattice solitons supported by competing cubic-quintic
nonlinearity,” Phys. Lett. A 339, 74–82
(2005).

[CrossRef]

Y. He, X. Zhu, D. Mihalache, J. Liu, and Z. Chen,
“Lattice solitons in 𝒫𝒯 -symmetric mixed
linear-nonlinear optical lattices,” Phys. Rev. A 85, 013831
(2012).

[CrossRef]

Y. He, X. Zhu, D. Mihalache, J. Liu, and Z. Chen,
“Solitons in PT-symmetric optical lattices with spatially periodic
modulation of nonlinearity,” Opt. Commun. 285, 3320–3324
(2012).

[CrossRef]

S. Liu, C. Ma, Y. Zhang, and K. Lu, “Bragg
gap solitons in symmetric lattices with competing nonlinearity,”
Opt. Commun. 285, 1934–1939 (2012).

[CrossRef]

K. Zhou, Z. Guo, J. Wang, and S. Liu,
“Defect modes in defective parity-time symmetric periodic complex
potentials,” Opt. Lett. 35, 2928–2930 (2010).

[CrossRef]
[PubMed]

S. Hu, X. Ma, D. Lu, Y. Zheng, and W. Hu,
“Defect solitons in parity-time-symmetric optical lattices with
nonlocal nonlinearity,” Phys. Rev. A 85, 043826
(2012).

[CrossRef]

S. Liu, C. Ma, Y. Zhang, and K. Lu, “Bragg
gap solitons in symmetric lattices with competing nonlinearity,”
Opt. Commun. 285, 1934–1939 (2012).

[CrossRef]

S. Liu, C. Ma, Y. Zhang, and K. Lu, “Bragg
gap solitons in symmetric lattices with competing nonlinearity,”
Opt. Commun. 285, 1934–1939 (2012).

[CrossRef]

S. Hu, X. Ma, D. Lu, Y. Zheng, and W. Hu,
“Defect solitons in parity-time-symmetric optical lattices with
nonlocal nonlinearity,” Phys. Rev. A 85, 043826
(2012).

[CrossRef]

K. Makris, R. El-Ganainy, D. Christodoulides, and
Z. Musslimani, “PT-symmetric periodic optical potentials,”
Int. J. of Theor. Phys. 50, 1019–1041 (2011).

[CrossRef]

K. G. Makris, R. El-Ganainy, D. N. Christodoulides,
and Z. H. Musslimani, “𝒫𝒯 -symmetric optical
lattices,” Phys. Rev. A 81, 063807 (2010).

[CrossRef]

C. E. Rüter, K. G. Makris, R. El-Ganainy,
D. N. Christodoulides, M. Segev, and D. Kip, “Observation of
parity-time symmetry in optics,” Nat. Phys. 6, 192–195
(2010).

[CrossRef]

Z. H. Musslimani, K. G. Makris, R. El-Ganainy, and
D. N. Christodoulides, “Optical solitons in 𝒫𝒯
periodic potentials,” Phys. Rev. Lett. 100, 030402
(2008).

[CrossRef]
[PubMed]

K. G. Makris, R. El-Ganainy, D. N. Christodoulides, and Z. H. Musslimani, “Beam dynamics in 𝒫𝒯 symmetric optical lattices,” Phys. Rev. Lett. 100, 103904 (2008).

[CrossRef]
[PubMed]

R. El-Ganainy, K. G. Makris, D. N. Christodoulides,
and Z. H. Musslimani, “Theory of coupled optical PT-symmetric
structures,” Opt. Lett. 32, 2632–2634 (2007).

[CrossRef]
[PubMed]

C. M. Bender, G. V. Dunne, and P. N. Meisinger,
“Complex periodic potentials with real band spectra,” Phys.
Lett. A 252, 272–276 (1999).

[CrossRef]

Y. He, X. Zhu, D. Mihalache, J. Liu, and Z. Chen,
“Solitons in PT-symmetric optical lattices with spatially periodic
modulation of nonlinearity,” Opt. Commun. 285, 3320–3324
(2012).

[CrossRef]

Y. He, X. Zhu, D. Mihalache, J. Liu, and Z. Chen,
“Lattice solitons in 𝒫𝒯 -symmetric mixed
linear-nonlinear optical lattices,” Phys. Rev. A 85, 013831
(2012).

[CrossRef]

A. Guo, G. J. Salamo, D. Duchesne, R. Morandotti,
M. Volatier-Ravat, V. Aimez, G. A. Siviloglou, and D. N. Christodoulides,
“Observation of 𝒫𝒯 -symmetry breaking in complex
optical potentials,” Phys. Rev. Lett. 103, 093902
(2009).

[CrossRef]
[PubMed]

K. Makris, R. El-Ganainy, D. Christodoulides, and
Z. Musslimani, “PT-symmetric periodic optical potentials,”
Int. J. of Theor. Phys. 50, 1019–1041 (2011).

[CrossRef]

K. G. Makris, R. El-Ganainy, D. N. Christodoulides,
and Z. H. Musslimani, “𝒫𝒯 -symmetric optical
lattices,” Phys. Rev. A 81, 063807 (2010).

[CrossRef]

Z. H. Musslimani, K. G. Makris, R. El-Ganainy, and
D. N. Christodoulides, “Optical solitons in 𝒫𝒯
periodic potentials,” Phys. Rev. Lett. 100, 030402
(2008).

[CrossRef]
[PubMed]

K. G. Makris, R. El-Ganainy, D. N. Christodoulides, and Z. H. Musslimani, “Beam dynamics in 𝒫𝒯 symmetric optical lattices,” Phys. Rev. Lett. 100, 103904 (2008).

[CrossRef]
[PubMed]

R. El-Ganainy, K. G. Makris, D. N. Christodoulides,
and Z. H. Musslimani, “Theory of coupled optical PT-symmetric
structures,” Opt. Lett. 32, 2632–2634 (2007).

[CrossRef]
[PubMed]

S. Nixon, L. Ge, and J. Yang, “Stability
analysis for solitons in 𝒫𝒯 -symmetric optical
lattices,” Phys. Rev. A8 5, 023822 (2012).

[CrossRef]

C. E. Rüter, K. G. Makris, R. El-Ganainy,
D. N. Christodoulides, M. Segev, and D. Kip, “Observation of
parity-time symmetry in optics,” Nat. Phys. 6, 192–195
(2010).

[CrossRef]

A. Guo, G. J. Salamo, D. Duchesne, R. Morandotti,
M. Volatier-Ravat, V. Aimez, G. A. Siviloglou, and D. N. Christodoulides,
“Observation of 𝒫𝒯 -symmetry breaking in complex
optical potentials,” Phys. Rev. Lett. 103, 093902
(2009).

[CrossRef]
[PubMed]

C. E. Rüter, K. G. Makris, R. El-Ganainy,
D. N. Christodoulides, M. Segev, and D. Kip, “Observation of
parity-time symmetry in optics,” Nat. Phys. 6, 192–195
(2010).

[CrossRef]

Z. Shi, X. Jiang, X. Zhu, and H. Li,
“Bright spatial solitons in defocusing Kerr media with
𝒫𝒯 -symmetric potentials,” Phys. Rev. A 84, 053855
(2011).

[CrossRef]

A. Guo, G. J. Salamo, D. Duchesne, R. Morandotti,
M. Volatier-Ravat, V. Aimez, G. A. Siviloglou, and D. N. Christodoulides,
“Observation of 𝒫𝒯 -symmetry breaking in complex
optical potentials,” Phys. Rev. Lett. 103, 093902
(2009).

[CrossRef]
[PubMed]

A. Guo, G. J. Salamo, D. Duchesne, R. Morandotti,
M. Volatier-Ravat, V. Aimez, G. A. Siviloglou, and D. N. Christodoulides,
“Observation of 𝒫𝒯 -symmetry breaking in complex
optical potentials,” Phys. Rev. Lett. 103, 093902
(2009).

[CrossRef]
[PubMed]

H. Wang and J. Wang, “Defect solitons in
parity-time periodic potentials,” Opt. Express 19, 4030–4035
(2011).

[CrossRef]
[PubMed]

K. Zhou, Z. Guo, J. Wang, and S. Liu,
“Defect modes in defective parity-time symmetric periodic complex
potentials,” Opt. Lett. 35, 2928–2930 (2010).

[CrossRef]
[PubMed]

J. Wang, J. Yang, T. J. Alexander, and Y. S.
Kivshar, “Truncated-Bloch-wave solitons in optical
lattices,” Phys. Rev. A 79, 043610 (2009).

[CrossRef]

J. Wang, F. Ye, L. Dong, T. Cai, and Y.-P. Li,
“Lattice solitons supported by competing cubic-quintic
nonlinearity,” Phys. Lett. A 339, 74–82
(2005).

[CrossRef]

S. Nixon, L. Ge, and J. Yang, “Stability
analysis for solitons in 𝒫𝒯 -symmetric optical
lattices,” Phys. Rev. A8 5, 023822 (2012).

[CrossRef]

J. Wang, J. Yang, T. J. Alexander, and Y. S.
Kivshar, “Truncated-Bloch-wave solitons in optical
lattices,” Phys. Rev. A 79, 043610 (2009).

[CrossRef]

L. Chen, R. Li, N. Yang, D. Chen, and L. Li,
“Optical modes in PT-symmetric double-channel waveguides,”
Proc. Romanian Acad. A 13, 46–54 (2012).

J. Wang, F. Ye, L. Dong, T. Cai, and Y.-P. Li,
“Lattice solitons supported by competing cubic-quintic
nonlinearity,” Phys. Lett. A 339, 74–82
(2005).

[CrossRef]

F. K. Abdullaev, Y. V. Kartashov, V. V. Konotop,
and D. A. Zezyulin, “Solitons in 𝒫𝒯 -symmetric
nonlinear lattices,” Phys. Rev. A 83, 041805 (2011).

[CrossRef]

D. A. Zezyulin, Y. V. Kartashov, and V. V. Konotop,
“Stability of solitons in PT-symmetric nonlinear
potentials,” EPL-Europhys. Lett. 96, 64003 (2011).

[CrossRef]

S. Liu, C. Ma, Y. Zhang, and K. Lu, “Bragg
gap solitons in symmetric lattices with competing nonlinearity,”
Opt. Commun. 285, 1934–1939 (2012).

[CrossRef]

S. Hu, X. Ma, D. Lu, Y. Zheng, and W. Hu,
“Defect solitons in parity-time-symmetric optical lattices with
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