Abstract

An asymmetric T-shape nanoslit in a metal film is proposed to act as an efficient dichroic surface-plasmon-polariton (SPP) splitter, which is composed of a single nanoslit in immediate contacting with two nanogrooves with different widths. Simulations show that, due to the interferences of SPPs in the upper part of the asymmetric T-shape nanoslit, the generated SPPs propagating to the left and right directions on the front metal surface can be manipulated nearly independently by altering the right and left groove widths, respectively. Based on such effects, a dichroic SPP splitter is demonstrated and the splitting wavelengths can easily be adjusted. High splitting ratios of 31:1 and 1:12 at splitting wavelengths of 680 nm and 884 nm are numerically presented with a device’s lateral dimension of only 1200 nm. Further experimental results match the simulations well.

© 2013 OSA

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  3. T. W. Ebbesen, C. Genet, and S. I. Bozhevolnyi, “Surface-plasmon circuitry,” Phys. Today61(5), 44–50 (2008).
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  4. F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
    [CrossRef]
  5. G. Lerosey, D. F. P. Pile, P. Matheu, G. Bartal, and X. Zhang, “Controlling the phase and amplitude of plasmon sources at a subwavelength scale,” Nano Lett.9(1), 327–331 (2009).
    [CrossRef] [PubMed]
  6. I. P. Radko, S. I. Bozhevolnyi, G. Brucoli, L. Martín-Moreno, F. J. García-Vidal, and A. Boltasseva, “Efficient unidirectional ridge excitation of surface plasmons,” Opt. Express17(9), 7228–7232 (2009).
    [CrossRef] [PubMed]
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    [CrossRef]
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    [CrossRef] [PubMed]
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  10. S. B. Raghunathan, C. H. Gan, T. van Dijk, B. Ea Kim, H. F. Schouten, W. Ubachs, P. Lalanne, and T. D. Visser, “Plasmon switching: observation of dynamic surface plasmon steering by selective mode excitation in a sub-wavelength slit,” Opt. Express20(14), 15326–15335 (2012).
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    [CrossRef]
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    [CrossRef] [PubMed]
  17. J. J. Chen, C. Wang, G. W. Lu, W. Q. Li, J. H. Xiao, and Q. H. Gong, “Highly efficient nanofocusing based on a T-shape micro-slit surrounded with multi-slits,” Opt. Express20(16), 17734–17740 (2012).
    [CrossRef] [PubMed]
  18. Z. W. Zeng and H. T. Liu, “Electromagnetic enhancement by a T-shaped metallic nanogroove: impact of surface plasmon polaritons and other surface waves,” IEEE J. Sel. Top. Quantum Electron.18(6), 1669–1675 (2012).
    [CrossRef]
  19. Y. X. Cui, K. H. Fung, J. Xu, S. L. He, and N. X. Fang, “Multiband plasmonic absorber based on transverse phase resonances,” Opt. Express20(16), 17552–17559 (2012).
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    [CrossRef]

2013

X. Zhang, Z. Li, J. Chen, H. Liao, S. Yue, and Q. Gong, “A submicron surface-plasmon-polariton dichroic splitter based on a composite cavity structure,” Appl. Phys. Lett.102(9), 091110 (2013).
[CrossRef]

2012

J. Chen, Z. Li, S. Yue, J. Xiao, and Q. Gong, “Plasmon-induced transparency in asymmetric T-shape single slit,” Nano Lett.12(5), 2494–2498 (2012).
[CrossRef] [PubMed]

Z. W. Zeng and H. T. Liu, “Electromagnetic enhancement by a T-shaped metallic nanogroove: impact of surface plasmon polaritons and other surface waves,” IEEE J. Sel. Top. Quantum Electron.18(6), 1669–1675 (2012).
[CrossRef]

S. B. Raghunathan, C. H. Gan, T. van Dijk, B. Ea Kim, H. F. Schouten, W. Ubachs, P. Lalanne, and T. D. Visser, “Plasmon switching: observation of dynamic surface plasmon steering by selective mode excitation in a sub-wavelength slit,” Opt. Express20(14), 15326–15335 (2012).
[CrossRef] [PubMed]

Y. X. Cui, K. H. Fung, J. Xu, S. L. He, and N. X. Fang, “Multiband plasmonic absorber based on transverse phase resonances,” Opt. Express20(16), 17552–17559 (2012).
[CrossRef] [PubMed]

J. J. Chen, C. Wang, G. W. Lu, W. Q. Li, J. H. Xiao, and Q. H. Gong, “Highly efficient nanofocusing based on a T-shape micro-slit surrounded with multi-slits,” Opt. Express20(16), 17734–17740 (2012).
[CrossRef] [PubMed]

Y. Liu, S. Palomba, Y. Park, T. Zentgraf, X. Yin, and X. Zhang, “Compact magnetic antennas for directional excitation of surface plasmons,” Nano Lett.12(9), 4853–4858 (2012).
[CrossRef] [PubMed]

2011

J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Ultracompact surface-plasmon-polariton splitter based on modulations of quasicylindrical waves to the total field,” J. Appl. Phys.109(7), 073102 (2011).
[CrossRef]

J. S. Liu, R. A. Pala, F. Afshinmanesh, W. Cai, and M. L. Brongersma, “A submicron plasmonic dichroic splitter,” Nat Commun2, 525 (2011).
[CrossRef] [PubMed]

A. Baron, E. Devaux, J. C. Rodier, J. P. Hugonin, E. Rousseau, C. Genet, T. W. Ebbesen, and P. Lalanne, “Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons,” Nano Lett.11(10), 4207–4212 (2011).
[CrossRef] [PubMed]

2010

J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Efficient unidirectional generation of surface plasmon polaritons with asymmetric single-nanoslit,” Appl. Phys. Lett.97(4), 041113 (2010).
[CrossRef]

D. K. Gramotnev and S. I. Bozhevolnyi, “Plasmonics beyond the diffraction limit,” Nat. Photonics4(2), 83–91 (2010).
[CrossRef]

Q. Q. Gan and F. J. Bartoli, “Bidirectional surface wave splitter at visible frequencies,” Opt. Lett.35(24), 4181–4183 (2010).
[CrossRef] [PubMed]

2009

I. P. Radko, S. I. Bozhevolnyi, G. Brucoli, L. Martín-Moreno, F. J. García-Vidal, and A. Boltasseva, “Efficient unidirectional ridge excitation of surface plasmons,” Opt. Express17(9), 7228–7232 (2009).
[CrossRef] [PubMed]

G. Lerosey, D. F. P. Pile, P. Matheu, G. Bartal, and X. Zhang, “Controlling the phase and amplitude of plasmon sources at a subwavelength scale,” Nano Lett.9(1), 327–331 (2009).
[CrossRef] [PubMed]

2008

T. W. Ebbesen, C. Genet, and S. I. Bozhevolnyi, “Surface-plasmon circuitry,” Phys. Today61(5), 44–50 (2008).
[CrossRef]

2007

F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
[CrossRef]

Q. Q. Gan, B. S. Guo, G. F. Song, L. H. Chen, Z. Fu, Y. J. Ding, and F. J. Bartoli, “Plasmonic surface-wave splitter,” Appl. Phys. Lett.90(16), 161130 (2007).
[CrossRef]

2003

W. L. Barnes, A. Dereux, and T. W. Ebbesen, “Surface plasmon subwavelength optics,” Nature424(6950), 824–830 (2003).
[CrossRef] [PubMed]

1972

P. B. Johnson and R. W. Christy, “Optical constants of the noble metals,” Phys. Rev. B6(12), 4370–4379 (1972).
[CrossRef]

Afshinmanesh, F.

J. S. Liu, R. A. Pala, F. Afshinmanesh, W. Cai, and M. L. Brongersma, “A submicron plasmonic dichroic splitter,” Nat Commun2, 525 (2011).
[CrossRef] [PubMed]

Barnes, W. L.

W. L. Barnes, A. Dereux, and T. W. Ebbesen, “Surface plasmon subwavelength optics,” Nature424(6950), 824–830 (2003).
[CrossRef] [PubMed]

Baron, A.

A. Baron, E. Devaux, J. C. Rodier, J. P. Hugonin, E. Rousseau, C. Genet, T. W. Ebbesen, and P. Lalanne, “Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons,” Nano Lett.11(10), 4207–4212 (2011).
[CrossRef] [PubMed]

Bartal, G.

G. Lerosey, D. F. P. Pile, P. Matheu, G. Bartal, and X. Zhang, “Controlling the phase and amplitude of plasmon sources at a subwavelength scale,” Nano Lett.9(1), 327–331 (2009).
[CrossRef] [PubMed]

Bartoli, F. J.

Q. Q. Gan and F. J. Bartoli, “Bidirectional surface wave splitter at visible frequencies,” Opt. Lett.35(24), 4181–4183 (2010).
[CrossRef] [PubMed]

Q. Q. Gan, B. S. Guo, G. F. Song, L. H. Chen, Z. Fu, Y. J. Ding, and F. J. Bartoli, “Plasmonic surface-wave splitter,” Appl. Phys. Lett.90(16), 161130 (2007).
[CrossRef]

Boltasseva, A.

Bozhevolnyi, S. I.

D. K. Gramotnev and S. I. Bozhevolnyi, “Plasmonics beyond the diffraction limit,” Nat. Photonics4(2), 83–91 (2010).
[CrossRef]

I. P. Radko, S. I. Bozhevolnyi, G. Brucoli, L. Martín-Moreno, F. J. García-Vidal, and A. Boltasseva, “Efficient unidirectional ridge excitation of surface plasmons,” Opt. Express17(9), 7228–7232 (2009).
[CrossRef] [PubMed]

T. W. Ebbesen, C. Genet, and S. I. Bozhevolnyi, “Surface-plasmon circuitry,” Phys. Today61(5), 44–50 (2008).
[CrossRef]

F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
[CrossRef]

Brongersma, M. L.

J. S. Liu, R. A. Pala, F. Afshinmanesh, W. Cai, and M. L. Brongersma, “A submicron plasmonic dichroic splitter,” Nat Commun2, 525 (2011).
[CrossRef] [PubMed]

Brucoli, G.

Cai, W.

J. S. Liu, R. A. Pala, F. Afshinmanesh, W. Cai, and M. L. Brongersma, “A submicron plasmonic dichroic splitter,” Nat Commun2, 525 (2011).
[CrossRef] [PubMed]

Chen, J.

X. Zhang, Z. Li, J. Chen, H. Liao, S. Yue, and Q. Gong, “A submicron surface-plasmon-polariton dichroic splitter based on a composite cavity structure,” Appl. Phys. Lett.102(9), 091110 (2013).
[CrossRef]

J. Chen, Z. Li, S. Yue, J. Xiao, and Q. Gong, “Plasmon-induced transparency in asymmetric T-shape single slit,” Nano Lett.12(5), 2494–2498 (2012).
[CrossRef] [PubMed]

Chen, J. J.

J. J. Chen, C. Wang, G. W. Lu, W. Q. Li, J. H. Xiao, and Q. H. Gong, “Highly efficient nanofocusing based on a T-shape micro-slit surrounded with multi-slits,” Opt. Express20(16), 17734–17740 (2012).
[CrossRef] [PubMed]

J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Ultracompact surface-plasmon-polariton splitter based on modulations of quasicylindrical waves to the total field,” J. Appl. Phys.109(7), 073102 (2011).
[CrossRef]

J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Efficient unidirectional generation of surface plasmon polaritons with asymmetric single-nanoslit,” Appl. Phys. Lett.97(4), 041113 (2010).
[CrossRef]

Chen, L. H.

Q. Q. Gan, B. S. Guo, G. F. Song, L. H. Chen, Z. Fu, Y. J. Ding, and F. J. Bartoli, “Plasmonic surface-wave splitter,” Appl. Phys. Lett.90(16), 161130 (2007).
[CrossRef]

Christy, R. W.

P. B. Johnson and R. W. Christy, “Optical constants of the noble metals,” Phys. Rev. B6(12), 4370–4379 (1972).
[CrossRef]

Cui, Y. X.

Dereux, A.

F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
[CrossRef]

W. L. Barnes, A. Dereux, and T. W. Ebbesen, “Surface plasmon subwavelength optics,” Nature424(6950), 824–830 (2003).
[CrossRef] [PubMed]

Devaux, E.

A. Baron, E. Devaux, J. C. Rodier, J. P. Hugonin, E. Rousseau, C. Genet, T. W. Ebbesen, and P. Lalanne, “Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons,” Nano Lett.11(10), 4207–4212 (2011).
[CrossRef] [PubMed]

F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
[CrossRef]

Ding, Y. J.

Q. Q. Gan, B. S. Guo, G. F. Song, L. H. Chen, Z. Fu, Y. J. Ding, and F. J. Bartoli, “Plasmonic surface-wave splitter,” Appl. Phys. Lett.90(16), 161130 (2007).
[CrossRef]

Ea Kim, B.

Ebbesen, T. W.

A. Baron, E. Devaux, J. C. Rodier, J. P. Hugonin, E. Rousseau, C. Genet, T. W. Ebbesen, and P. Lalanne, “Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons,” Nano Lett.11(10), 4207–4212 (2011).
[CrossRef] [PubMed]

T. W. Ebbesen, C. Genet, and S. I. Bozhevolnyi, “Surface-plasmon circuitry,” Phys. Today61(5), 44–50 (2008).
[CrossRef]

F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
[CrossRef]

W. L. Barnes, A. Dereux, and T. W. Ebbesen, “Surface plasmon subwavelength optics,” Nature424(6950), 824–830 (2003).
[CrossRef] [PubMed]

Fang, N. X.

Fu, Z.

Q. Q. Gan, B. S. Guo, G. F. Song, L. H. Chen, Z. Fu, Y. J. Ding, and F. J. Bartoli, “Plasmonic surface-wave splitter,” Appl. Phys. Lett.90(16), 161130 (2007).
[CrossRef]

Fung, K. H.

Gan, C. H.

Gan, Q. Q.

Q. Q. Gan and F. J. Bartoli, “Bidirectional surface wave splitter at visible frequencies,” Opt. Lett.35(24), 4181–4183 (2010).
[CrossRef] [PubMed]

Q. Q. Gan, B. S. Guo, G. F. Song, L. H. Chen, Z. Fu, Y. J. Ding, and F. J. Bartoli, “Plasmonic surface-wave splitter,” Appl. Phys. Lett.90(16), 161130 (2007).
[CrossRef]

García-Vidal, F. J.

I. P. Radko, S. I. Bozhevolnyi, G. Brucoli, L. Martín-Moreno, F. J. García-Vidal, and A. Boltasseva, “Efficient unidirectional ridge excitation of surface plasmons,” Opt. Express17(9), 7228–7232 (2009).
[CrossRef] [PubMed]

F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
[CrossRef]

Genet, C.

A. Baron, E. Devaux, J. C. Rodier, J. P. Hugonin, E. Rousseau, C. Genet, T. W. Ebbesen, and P. Lalanne, “Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons,” Nano Lett.11(10), 4207–4212 (2011).
[CrossRef] [PubMed]

T. W. Ebbesen, C. Genet, and S. I. Bozhevolnyi, “Surface-plasmon circuitry,” Phys. Today61(5), 44–50 (2008).
[CrossRef]

Gong, Q.

X. Zhang, Z. Li, J. Chen, H. Liao, S. Yue, and Q. Gong, “A submicron surface-plasmon-polariton dichroic splitter based on a composite cavity structure,” Appl. Phys. Lett.102(9), 091110 (2013).
[CrossRef]

J. Chen, Z. Li, S. Yue, J. Xiao, and Q. Gong, “Plasmon-induced transparency in asymmetric T-shape single slit,” Nano Lett.12(5), 2494–2498 (2012).
[CrossRef] [PubMed]

Gong, Q. H.

J. J. Chen, C. Wang, G. W. Lu, W. Q. Li, J. H. Xiao, and Q. H. Gong, “Highly efficient nanofocusing based on a T-shape micro-slit surrounded with multi-slits,” Opt. Express20(16), 17734–17740 (2012).
[CrossRef] [PubMed]

J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Ultracompact surface-plasmon-polariton splitter based on modulations of quasicylindrical waves to the total field,” J. Appl. Phys.109(7), 073102 (2011).
[CrossRef]

J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Efficient unidirectional generation of surface plasmon polaritons with asymmetric single-nanoslit,” Appl. Phys. Lett.97(4), 041113 (2010).
[CrossRef]

González, M. U.

F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
[CrossRef]

Gramotnev, D. K.

D. K. Gramotnev and S. I. Bozhevolnyi, “Plasmonics beyond the diffraction limit,” Nat. Photonics4(2), 83–91 (2010).
[CrossRef]

Guo, B. S.

Q. Q. Gan, B. S. Guo, G. F. Song, L. H. Chen, Z. Fu, Y. J. Ding, and F. J. Bartoli, “Plasmonic surface-wave splitter,” Appl. Phys. Lett.90(16), 161130 (2007).
[CrossRef]

He, S. L.

Hugonin, J. P.

A. Baron, E. Devaux, J. C. Rodier, J. P. Hugonin, E. Rousseau, C. Genet, T. W. Ebbesen, and P. Lalanne, “Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons,” Nano Lett.11(10), 4207–4212 (2011).
[CrossRef] [PubMed]

Johnson, P. B.

P. B. Johnson and R. W. Christy, “Optical constants of the noble metals,” Phys. Rev. B6(12), 4370–4379 (1972).
[CrossRef]

Krenn, J. R.

F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
[CrossRef]

Lalanne, P.

S. B. Raghunathan, C. H. Gan, T. van Dijk, B. Ea Kim, H. F. Schouten, W. Ubachs, P. Lalanne, and T. D. Visser, “Plasmon switching: observation of dynamic surface plasmon steering by selective mode excitation in a sub-wavelength slit,” Opt. Express20(14), 15326–15335 (2012).
[CrossRef] [PubMed]

A. Baron, E. Devaux, J. C. Rodier, J. P. Hugonin, E. Rousseau, C. Genet, T. W. Ebbesen, and P. Lalanne, “Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons,” Nano Lett.11(10), 4207–4212 (2011).
[CrossRef] [PubMed]

Lerosey, G.

G. Lerosey, D. F. P. Pile, P. Matheu, G. Bartal, and X. Zhang, “Controlling the phase and amplitude of plasmon sources at a subwavelength scale,” Nano Lett.9(1), 327–331 (2009).
[CrossRef] [PubMed]

Li, W. Q.

Li, Z.

X. Zhang, Z. Li, J. Chen, H. Liao, S. Yue, and Q. Gong, “A submicron surface-plasmon-polariton dichroic splitter based on a composite cavity structure,” Appl. Phys. Lett.102(9), 091110 (2013).
[CrossRef]

J. Chen, Z. Li, S. Yue, J. Xiao, and Q. Gong, “Plasmon-induced transparency in asymmetric T-shape single slit,” Nano Lett.12(5), 2494–2498 (2012).
[CrossRef] [PubMed]

J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Ultracompact surface-plasmon-polariton splitter based on modulations of quasicylindrical waves to the total field,” J. Appl. Phys.109(7), 073102 (2011).
[CrossRef]

J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Efficient unidirectional generation of surface plasmon polaritons with asymmetric single-nanoslit,” Appl. Phys. Lett.97(4), 041113 (2010).
[CrossRef]

Liao, H.

X. Zhang, Z. Li, J. Chen, H. Liao, S. Yue, and Q. Gong, “A submicron surface-plasmon-polariton dichroic splitter based on a composite cavity structure,” Appl. Phys. Lett.102(9), 091110 (2013).
[CrossRef]

Liu, H. T.

Z. W. Zeng and H. T. Liu, “Electromagnetic enhancement by a T-shaped metallic nanogroove: impact of surface plasmon polaritons and other surface waves,” IEEE J. Sel. Top. Quantum Electron.18(6), 1669–1675 (2012).
[CrossRef]

Liu, J. S.

J. S. Liu, R. A. Pala, F. Afshinmanesh, W. Cai, and M. L. Brongersma, “A submicron plasmonic dichroic splitter,” Nat Commun2, 525 (2011).
[CrossRef] [PubMed]

Liu, Y.

Y. Liu, S. Palomba, Y. Park, T. Zentgraf, X. Yin, and X. Zhang, “Compact magnetic antennas for directional excitation of surface plasmons,” Nano Lett.12(9), 4853–4858 (2012).
[CrossRef] [PubMed]

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F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
[CrossRef]

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Martín-Moreno, L.

I. P. Radko, S. I. Bozhevolnyi, G. Brucoli, L. Martín-Moreno, F. J. García-Vidal, and A. Boltasseva, “Efficient unidirectional ridge excitation of surface plasmons,” Opt. Express17(9), 7228–7232 (2009).
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F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
[CrossRef]

Matheu, P.

G. Lerosey, D. F. P. Pile, P. Matheu, G. Bartal, and X. Zhang, “Controlling the phase and amplitude of plasmon sources at a subwavelength scale,” Nano Lett.9(1), 327–331 (2009).
[CrossRef] [PubMed]

Pala, R. A.

J. S. Liu, R. A. Pala, F. Afshinmanesh, W. Cai, and M. L. Brongersma, “A submicron plasmonic dichroic splitter,” Nat Commun2, 525 (2011).
[CrossRef] [PubMed]

Palomba, S.

Y. Liu, S. Palomba, Y. Park, T. Zentgraf, X. Yin, and X. Zhang, “Compact magnetic antennas for directional excitation of surface plasmons,” Nano Lett.12(9), 4853–4858 (2012).
[CrossRef] [PubMed]

Park, Y.

Y. Liu, S. Palomba, Y. Park, T. Zentgraf, X. Yin, and X. Zhang, “Compact magnetic antennas for directional excitation of surface plasmons,” Nano Lett.12(9), 4853–4858 (2012).
[CrossRef] [PubMed]

Pile, D. F. P.

G. Lerosey, D. F. P. Pile, P. Matheu, G. Bartal, and X. Zhang, “Controlling the phase and amplitude of plasmon sources at a subwavelength scale,” Nano Lett.9(1), 327–331 (2009).
[CrossRef] [PubMed]

Radko, I. P.

I. P. Radko, S. I. Bozhevolnyi, G. Brucoli, L. Martín-Moreno, F. J. García-Vidal, and A. Boltasseva, “Efficient unidirectional ridge excitation of surface plasmons,” Opt. Express17(9), 7228–7232 (2009).
[CrossRef] [PubMed]

F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
[CrossRef]

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Rodier, J. C.

A. Baron, E. Devaux, J. C. Rodier, J. P. Hugonin, E. Rousseau, C. Genet, T. W. Ebbesen, and P. Lalanne, “Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons,” Nano Lett.11(10), 4207–4212 (2011).
[CrossRef] [PubMed]

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F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
[CrossRef]

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A. Baron, E. Devaux, J. C. Rodier, J. P. Hugonin, E. Rousseau, C. Genet, T. W. Ebbesen, and P. Lalanne, “Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons,” Nano Lett.11(10), 4207–4212 (2011).
[CrossRef] [PubMed]

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Song, G. F.

Q. Q. Gan, B. S. Guo, G. F. Song, L. H. Chen, Z. Fu, Y. J. Ding, and F. J. Bartoli, “Plasmonic surface-wave splitter,” Appl. Phys. Lett.90(16), 161130 (2007).
[CrossRef]

Ubachs, W.

van Dijk, T.

Visser, T. D.

Wang, C.

Weeber, J. C.

F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
[CrossRef]

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J. Chen, Z. Li, S. Yue, J. Xiao, and Q. Gong, “Plasmon-induced transparency in asymmetric T-shape single slit,” Nano Lett.12(5), 2494–2498 (2012).
[CrossRef] [PubMed]

Xiao, J. H.

Xu, J.

Yin, X.

Y. Liu, S. Palomba, Y. Park, T. Zentgraf, X. Yin, and X. Zhang, “Compact magnetic antennas for directional excitation of surface plasmons,” Nano Lett.12(9), 4853–4858 (2012).
[CrossRef] [PubMed]

Yue, S.

X. Zhang, Z. Li, J. Chen, H. Liao, S. Yue, and Q. Gong, “A submicron surface-plasmon-polariton dichroic splitter based on a composite cavity structure,” Appl. Phys. Lett.102(9), 091110 (2013).
[CrossRef]

J. Chen, Z. Li, S. Yue, J. Xiao, and Q. Gong, “Plasmon-induced transparency in asymmetric T-shape single slit,” Nano Lett.12(5), 2494–2498 (2012).
[CrossRef] [PubMed]

J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Ultracompact surface-plasmon-polariton splitter based on modulations of quasicylindrical waves to the total field,” J. Appl. Phys.109(7), 073102 (2011).
[CrossRef]

J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Efficient unidirectional generation of surface plasmon polaritons with asymmetric single-nanoslit,” Appl. Phys. Lett.97(4), 041113 (2010).
[CrossRef]

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Z. W. Zeng and H. T. Liu, “Electromagnetic enhancement by a T-shaped metallic nanogroove: impact of surface plasmon polaritons and other surface waves,” IEEE J. Sel. Top. Quantum Electron.18(6), 1669–1675 (2012).
[CrossRef]

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Y. Liu, S. Palomba, Y. Park, T. Zentgraf, X. Yin, and X. Zhang, “Compact magnetic antennas for directional excitation of surface plasmons,” Nano Lett.12(9), 4853–4858 (2012).
[CrossRef] [PubMed]

Zhang, X.

X. Zhang, Z. Li, J. Chen, H. Liao, S. Yue, and Q. Gong, “A submicron surface-plasmon-polariton dichroic splitter based on a composite cavity structure,” Appl. Phys. Lett.102(9), 091110 (2013).
[CrossRef]

Y. Liu, S. Palomba, Y. Park, T. Zentgraf, X. Yin, and X. Zhang, “Compact magnetic antennas for directional excitation of surface plasmons,” Nano Lett.12(9), 4853–4858 (2012).
[CrossRef] [PubMed]

G. Lerosey, D. F. P. Pile, P. Matheu, G. Bartal, and X. Zhang, “Controlling the phase and amplitude of plasmon sources at a subwavelength scale,” Nano Lett.9(1), 327–331 (2009).
[CrossRef] [PubMed]

Appl. Phys. Lett.

J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Efficient unidirectional generation of surface plasmon polaritons with asymmetric single-nanoslit,” Appl. Phys. Lett.97(4), 041113 (2010).
[CrossRef]

X. Zhang, Z. Li, J. Chen, H. Liao, S. Yue, and Q. Gong, “A submicron surface-plasmon-polariton dichroic splitter based on a composite cavity structure,” Appl. Phys. Lett.102(9), 091110 (2013).
[CrossRef]

Q. Q. Gan, B. S. Guo, G. F. Song, L. H. Chen, Z. Fu, Y. J. Ding, and F. J. Bartoli, “Plasmonic surface-wave splitter,” Appl. Phys. Lett.90(16), 161130 (2007).
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IEEE J. Sel. Top. Quantum Electron.

Z. W. Zeng and H. T. Liu, “Electromagnetic enhancement by a T-shaped metallic nanogroove: impact of surface plasmon polaritons and other surface waves,” IEEE J. Sel. Top. Quantum Electron.18(6), 1669–1675 (2012).
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J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Ultracompact surface-plasmon-polariton splitter based on modulations of quasicylindrical waves to the total field,” J. Appl. Phys.109(7), 073102 (2011).
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Nano Lett.

A. Baron, E. Devaux, J. C. Rodier, J. P. Hugonin, E. Rousseau, C. Genet, T. W. Ebbesen, and P. Lalanne, “Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons,” Nano Lett.11(10), 4207–4212 (2011).
[CrossRef] [PubMed]

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[CrossRef] [PubMed]

J. Chen, Z. Li, S. Yue, J. Xiao, and Q. Gong, “Plasmon-induced transparency in asymmetric T-shape single slit,” Nano Lett.12(5), 2494–2498 (2012).
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J. S. Liu, R. A. Pala, F. Afshinmanesh, W. Cai, and M. L. Brongersma, “A submicron plasmonic dichroic splitter,” Nat Commun2, 525 (2011).
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F. López-Tejeira, S. G. Rodrigo, L. Martín-Moreno, F. J. García-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. González, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys.3(5), 324–328 (2007).
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Figures (3)

Fig. 1
Fig. 1

(a) Schematic of the proposed asymmetric T-shape structure and geometrical parameters. (b) Schematic diagram of the generation progress of the left-going SPPs.

Fig. 2
Fig. 2

(a) SPP generation efficiency to the left (ηL) as a function of the right groove width wG2, with the left groove width fixed at wG1 = 350 nm and the incident wavelength at λ = 830 nm. Extinction ratios ηL/ηR (black lines) and ηR/ηL (red lines) as functions of the wavelength with (b) wG1 = 400 nm and wG2 = 500 nm, 550 nm, 600 nm, and (c) wG2 = 650 nm and wG1 = 400 nm, 450 nm, 500 nm. (d) SPP generation efficiencies ηL (black line) and ηR (red line) as functions of the wavelength with wG1 = 420 nm and wG2 = 600 nm. The corresponding power flow distributions with wG1 = 420 nm and wG2 = 600 nm at splitting wavlengths of (e) λ = 680 nm and (f) λ = 884 nm.

Fig. 3
Fig. 3

(a) SEM image of the experimental structure. (b) Measured splitting ratios (scatters) of the proposed SPP splitter at different wavelengths and corresponding simulation results (lines). Typical CCD images displaying the scattered light signals from the nanoslit and the decoupling gratings at the splitting wavelengths of (c) λ = 700 nm and (d) λ = 880 nm.

Equations (1)

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Φ= φ 0 + k spp w G2 + φ r + k spp w G2 + φ t = φ 0 + φ r + φ t +2 k spp w G2

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