Abstract

We propose a plasmonic nanosensor based on Fano resonance in the strong-confinement metal–dielectric–metal waveguide side-coupled with a pair of nanoresonators. Due to the coherent interference of the splitting discrete and quasi-continuum modes, the reflection spectrum possesses a sharp asymmetric Fano resonance dip, which is dependent on the cavity–cavity phase and the refractive index change of the dielectric. The physical features contribute to a highly efficient plasmonic sensor for refractive index sensing. The nanosensor yields a sensitivity of 900nm/RIU and a figure of merit of 500, remarkable values compared with those of plasmonic sensors supported by perfect absorbers.

© 2012 Optical Society of America

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    [CrossRef]
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    [CrossRef]
  3. N. Liu, M. Mesch, T. Weiss, M. Hentschel, and H. Giessen, Nano Lett. 10, 2342 (2010).
    [CrossRef]
  4. P. Neutens, P. Van Dorpe, I. De Vlaminck, L. Lagae, and G. Borghs, Nat. Photonics 3, 283 (2009).
    [CrossRef]
  5. A. Boltasseva, V. Volkov, R. Nielsen, E. Moreno, S. Rodrigo, and S. I. Bozhevolnyi, Opt. Express 16, 5252 (2008).
    [CrossRef]
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    [CrossRef]
  7. B. Luk’yanchuk, N. Zheludev, S. Maier, N. Halas, P. Nordlander, H. Giessen, and C. Chong, Nat. Mater. 9, 707 (2010).
    [CrossRef]
  8. A. Miroshnichenko, S. Flach, and Y. Kivshar, Rev. Mod. Phys. 82, 2257 (2010).
    [CrossRef]
  9. M. Sarrazin and J. Vigneron, Europhysics News 38(3), 27 (2007).
    [CrossRef]
  10. N. Verellen, Y. Sonnefraud, H. Sobhani, F. Hao, V. Moshchalkov, P. Dorpe, P. Nordlander, and S. Maier, Nano Lett. 9, 1663 (2009).
    [CrossRef]
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    [CrossRef]
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    [CrossRef]
  13. J. Lassiter, H. Sobhani, M. Knight, W. Mielczarek, P. Nordlander, and N. Halas, Nano Lett. 12, 1058 (2012).
    [CrossRef]
  14. A. Hosseini and Y. Massoud, Appl. Phys. Lett. 90, 181102 (2007).
    [CrossRef]
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    [CrossRef]
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    [CrossRef]
  17. Z. Han, A. Y. Elezzabi, and V. Van, Appl. Phys. Lett. 96, 131106 (2010).
    [CrossRef]
  18. H. Lu, X. Liu, L. Wang, Y. Gong, and D. Mao, Opt. Express 19, 2910 (2011).
    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
  23. Y. Xiao, M. Li, Y. Liu, Y. Li, X. Sun, and Q. Gong, Phys. Rev. A 82, 065804 (2010).
    [CrossRef]
  24. A. Taflove and S. Hagness, Computational Electrodynamics: The Finite-Difference Time-Domain Method3rd ed. (Artech House, 2005).
  25. J. Becker, A. Truegler, A. Jakab, U. Hohenester, and C. Soennichsen, Plasmonics 5, 161 (2010).
    [CrossRef]

2012 (2)

M. Rahmani, D. Y. Lei, V. Giannini, B. Lukiyanchuk, M. Ranjbar, T. Liew, M. Hong, and S. Maier, Nano Lett. 12, 2101 (2012).
[CrossRef]

J. Lassiter, H. Sobhani, M. Knight, W. Mielczarek, P. Nordlander, and N. Halas, Nano Lett. 12, 1058 (2012).
[CrossRef]

2011 (2)

2010 (9)

V. Fedotov, N. Papasimakis, E. Plum, A. Bitzer, M. Walther, P. Kuo, D. P. Tsai, and N. I. Zheludev, Phys. Rev. Lett. 104, 223901 (2010).
[CrossRef]

H. Lu, X. Liu, D. Mao, L. Wang, and Y. Gong, Opt. Express 18, 17922 (2010).
[CrossRef]

B. Luk’yanchuk, N. Zheludev, S. Maier, N. Halas, P. Nordlander, H. Giessen, and C. Chong, Nat. Mater. 9, 707 (2010).
[CrossRef]

A. Miroshnichenko, S. Flach, and Y. Kivshar, Rev. Mod. Phys. 82, 2257 (2010).
[CrossRef]

Z. Han, A. Y. Elezzabi, and V. Van, Appl. Phys. Lett. 96, 131106 (2010).
[CrossRef]

Y. Xiao, M. Li, Y. Liu, Y. Li, X. Sun, and Q. Gong, Phys. Rev. A 82, 065804 (2010).
[CrossRef]

J. Becker, A. Truegler, A. Jakab, U. Hohenester, and C. Soennichsen, Plasmonics 5, 161 (2010).
[CrossRef]

N. Liu, T. Weiss, M. Mesch, L. Langguth, U. Eigenthaler, M. Hirscher, C. Sonnichsen, and H. Giessen, Nano Lett. 10, 1103 (2010).
[CrossRef]

N. Liu, M. Mesch, T. Weiss, M. Hentschel, and H. Giessen, Nano Lett. 10, 2342 (2010).
[CrossRef]

2009 (4)

P. Neutens, P. Van Dorpe, I. De Vlaminck, L. Lagae, and G. Borghs, Nat. Photonics 3, 283 (2009).
[CrossRef]

G. Veronis, Z. Yu, Ş. Kocabaş, D. Miller, M. Brongersma, and S. Fan, Chin. Opt. Lett. 7, 302 (2009).
[CrossRef]

C. Min and G. Veronis, Opt. Express 17, 10757 (2009).
[CrossRef]

N. Verellen, Y. Sonnefraud, H. Sobhani, F. Hao, V. Moshchalkov, P. Dorpe, P. Nordlander, and S. Maier, Nano Lett. 9, 1663 (2009).
[CrossRef]

2008 (2)

2007 (2)

M. Sarrazin and J. Vigneron, Europhysics News 38(3), 27 (2007).
[CrossRef]

A. Hosseini and Y. Massoud, Appl. Phys. Lett. 90, 181102 (2007).
[CrossRef]

2006 (1)

S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J. Y. Laluet, and T. W. Ebbesen, Nature 440, 508 (2006).
[CrossRef]

1961 (1)

U. Fano, Phys. Rev. 124, 1866 (1961).
[CrossRef]

Becker, J.

J. Becker, A. Truegler, A. Jakab, U. Hohenester, and C. Soennichsen, Plasmonics 5, 161 (2010).
[CrossRef]

Bitzer, A.

V. Fedotov, N. Papasimakis, E. Plum, A. Bitzer, M. Walther, P. Kuo, D. P. Tsai, and N. I. Zheludev, Phys. Rev. Lett. 104, 223901 (2010).
[CrossRef]

Boltasseva, A.

Borghs, G.

P. Neutens, P. Van Dorpe, I. De Vlaminck, L. Lagae, and G. Borghs, Nat. Photonics 3, 283 (2009).
[CrossRef]

Bozhevolnyi, S. I.

A. Boltasseva, V. Volkov, R. Nielsen, E. Moreno, S. Rodrigo, and S. I. Bozhevolnyi, Opt. Express 16, 5252 (2008).
[CrossRef]

S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J. Y. Laluet, and T. W. Ebbesen, Nature 440, 508 (2006).
[CrossRef]

Brongersma, M.

Chong, C.

B. Luk’yanchuk, N. Zheludev, S. Maier, N. Halas, P. Nordlander, H. Giessen, and C. Chong, Nat. Mater. 9, 707 (2010).
[CrossRef]

De Vlaminck, I.

P. Neutens, P. Van Dorpe, I. De Vlaminck, L. Lagae, and G. Borghs, Nat. Photonics 3, 283 (2009).
[CrossRef]

Devaux, E.

S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J. Y. Laluet, and T. W. Ebbesen, Nature 440, 508 (2006).
[CrossRef]

Dorpe, P.

N. Verellen, Y. Sonnefraud, H. Sobhani, F. Hao, V. Moshchalkov, P. Dorpe, P. Nordlander, and S. Maier, Nano Lett. 9, 1663 (2009).
[CrossRef]

Ebbesen, T. W.

S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J. Y. Laluet, and T. W. Ebbesen, Nature 440, 508 (2006).
[CrossRef]

Eigenthaler, U.

N. Liu, T. Weiss, M. Mesch, L. Langguth, U. Eigenthaler, M. Hirscher, C. Sonnichsen, and H. Giessen, Nano Lett. 10, 1103 (2010).
[CrossRef]

Elezzabi, A. Y.

Z. Han, A. Y. Elezzabi, and V. Van, Appl. Phys. Lett. 96, 131106 (2010).
[CrossRef]

Fan, S.

Fano, U.

U. Fano, Phys. Rev. 124, 1866 (1961).
[CrossRef]

Fedotov, V.

V. Fedotov, N. Papasimakis, E. Plum, A. Bitzer, M. Walther, P. Kuo, D. P. Tsai, and N. I. Zheludev, Phys. Rev. Lett. 104, 223901 (2010).
[CrossRef]

Flach, S.

A. Miroshnichenko, S. Flach, and Y. Kivshar, Rev. Mod. Phys. 82, 2257 (2010).
[CrossRef]

Giannini, V.

M. Rahmani, D. Y. Lei, V. Giannini, B. Lukiyanchuk, M. Ranjbar, T. Liew, M. Hong, and S. Maier, Nano Lett. 12, 2101 (2012).
[CrossRef]

Giessen, H.

B. Luk’yanchuk, N. Zheludev, S. Maier, N. Halas, P. Nordlander, H. Giessen, and C. Chong, Nat. Mater. 9, 707 (2010).
[CrossRef]

N. Liu, T. Weiss, M. Mesch, L. Langguth, U. Eigenthaler, M. Hirscher, C. Sonnichsen, and H. Giessen, Nano Lett. 10, 1103 (2010).
[CrossRef]

N. Liu, M. Mesch, T. Weiss, M. Hentschel, and H. Giessen, Nano Lett. 10, 2342 (2010).
[CrossRef]

Gong, Q.

Y. Xiao, M. Li, Y. Liu, Y. Li, X. Sun, and Q. Gong, Phys. Rev. A 82, 065804 (2010).
[CrossRef]

Gong, Y.

Hagness, S.

A. Taflove and S. Hagness, Computational Electrodynamics: The Finite-Difference Time-Domain Method3rd ed. (Artech House, 2005).

Halas, N.

J. Lassiter, H. Sobhani, M. Knight, W. Mielczarek, P. Nordlander, and N. Halas, Nano Lett. 12, 1058 (2012).
[CrossRef]

B. Luk’yanchuk, N. Zheludev, S. Maier, N. Halas, P. Nordlander, H. Giessen, and C. Chong, Nat. Mater. 9, 707 (2010).
[CrossRef]

Han, Z.

Z. Han, A. Y. Elezzabi, and V. Van, Appl. Phys. Lett. 96, 131106 (2010).
[CrossRef]

Hao, F.

N. Verellen, Y. Sonnefraud, H. Sobhani, F. Hao, V. Moshchalkov, P. Dorpe, P. Nordlander, and S. Maier, Nano Lett. 9, 1663 (2009).
[CrossRef]

Haus, H. A.

H. A. Haus, Waves and Fields in Optoelectronics (Prentice-Hall, 1984) and Chap. 7 within.

Hentschel, M.

N. Liu, M. Mesch, T. Weiss, M. Hentschel, and H. Giessen, Nano Lett. 10, 2342 (2010).
[CrossRef]

Hirscher, M.

N. Liu, T. Weiss, M. Mesch, L. Langguth, U. Eigenthaler, M. Hirscher, C. Sonnichsen, and H. Giessen, Nano Lett. 10, 1103 (2010).
[CrossRef]

Hohenester, U.

J. Becker, A. Truegler, A. Jakab, U. Hohenester, and C. Soennichsen, Plasmonics 5, 161 (2010).
[CrossRef]

Hong, M.

M. Rahmani, D. Y. Lei, V. Giannini, B. Lukiyanchuk, M. Ranjbar, T. Liew, M. Hong, and S. Maier, Nano Lett. 12, 2101 (2012).
[CrossRef]

Hosseini, A.

A. Hosseini and Y. Massoud, Appl. Phys. Lett. 90, 181102 (2007).
[CrossRef]

Jakab, A.

J. Becker, A. Truegler, A. Jakab, U. Hohenester, and C. Soennichsen, Plasmonics 5, 161 (2010).
[CrossRef]

Kim, H.

Kivshar, Y.

A. Miroshnichenko, S. Flach, and Y. Kivshar, Rev. Mod. Phys. 82, 2257 (2010).
[CrossRef]

Knight, M.

J. Lassiter, H. Sobhani, M. Knight, W. Mielczarek, P. Nordlander, and N. Halas, Nano Lett. 12, 1058 (2012).
[CrossRef]

Kocabas, S.

Kuo, P.

V. Fedotov, N. Papasimakis, E. Plum, A. Bitzer, M. Walther, P. Kuo, D. P. Tsai, and N. I. Zheludev, Phys. Rev. Lett. 104, 223901 (2010).
[CrossRef]

Lagae, L.

P. Neutens, P. Van Dorpe, I. De Vlaminck, L. Lagae, and G. Borghs, Nat. Photonics 3, 283 (2009).
[CrossRef]

Laluet, J. Y.

S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J. Y. Laluet, and T. W. Ebbesen, Nature 440, 508 (2006).
[CrossRef]

Langguth, L.

N. Liu, T. Weiss, M. Mesch, L. Langguth, U. Eigenthaler, M. Hirscher, C. Sonnichsen, and H. Giessen, Nano Lett. 10, 1103 (2010).
[CrossRef]

Lassiter, J.

J. Lassiter, H. Sobhani, M. Knight, W. Mielczarek, P. Nordlander, and N. Halas, Nano Lett. 12, 1058 (2012).
[CrossRef]

Lee, B.

Lei, D. Y.

M. Rahmani, D. Y. Lei, V. Giannini, B. Lukiyanchuk, M. Ranjbar, T. Liew, M. Hong, and S. Maier, Nano Lett. 12, 2101 (2012).
[CrossRef]

Li, M.

Y. Xiao, M. Li, Y. Liu, Y. Li, X. Sun, and Q. Gong, Phys. Rev. A 82, 065804 (2010).
[CrossRef]

Li, Y.

Y. Xiao, M. Li, Y. Liu, Y. Li, X. Sun, and Q. Gong, Phys. Rev. A 82, 065804 (2010).
[CrossRef]

Liew, T.

M. Rahmani, D. Y. Lei, V. Giannini, B. Lukiyanchuk, M. Ranjbar, T. Liew, M. Hong, and S. Maier, Nano Lett. 12, 2101 (2012).
[CrossRef]

Liu, N.

N. Liu, T. Weiss, M. Mesch, L. Langguth, U. Eigenthaler, M. Hirscher, C. Sonnichsen, and H. Giessen, Nano Lett. 10, 1103 (2010).
[CrossRef]

N. Liu, M. Mesch, T. Weiss, M. Hentschel, and H. Giessen, Nano Lett. 10, 2342 (2010).
[CrossRef]

Liu, X.

Liu, Y.

Y. Xiao, M. Li, Y. Liu, Y. Li, X. Sun, and Q. Gong, Phys. Rev. A 82, 065804 (2010).
[CrossRef]

Lu, H.

Luk’yanchuk, B.

B. Luk’yanchuk, N. Zheludev, S. Maier, N. Halas, P. Nordlander, H. Giessen, and C. Chong, Nat. Mater. 9, 707 (2010).
[CrossRef]

Lukiyanchuk, B.

M. Rahmani, D. Y. Lei, V. Giannini, B. Lukiyanchuk, M. Ranjbar, T. Liew, M. Hong, and S. Maier, Nano Lett. 12, 2101 (2012).
[CrossRef]

Maier, S.

M. Rahmani, D. Y. Lei, V. Giannini, B. Lukiyanchuk, M. Ranjbar, T. Liew, M. Hong, and S. Maier, Nano Lett. 12, 2101 (2012).
[CrossRef]

B. Luk’yanchuk, N. Zheludev, S. Maier, N. Halas, P. Nordlander, H. Giessen, and C. Chong, Nat. Mater. 9, 707 (2010).
[CrossRef]

N. Verellen, Y. Sonnefraud, H. Sobhani, F. Hao, V. Moshchalkov, P. Dorpe, P. Nordlander, and S. Maier, Nano Lett. 9, 1663 (2009).
[CrossRef]

Mao, D.

Massoud, Y.

A. Hosseini and Y. Massoud, Appl. Phys. Lett. 90, 181102 (2007).
[CrossRef]

Mesch, M.

N. Liu, M. Mesch, T. Weiss, M. Hentschel, and H. Giessen, Nano Lett. 10, 2342 (2010).
[CrossRef]

N. Liu, T. Weiss, M. Mesch, L. Langguth, U. Eigenthaler, M. Hirscher, C. Sonnichsen, and H. Giessen, Nano Lett. 10, 1103 (2010).
[CrossRef]

Mielczarek, W.

J. Lassiter, H. Sobhani, M. Knight, W. Mielczarek, P. Nordlander, and N. Halas, Nano Lett. 12, 1058 (2012).
[CrossRef]

Miller, D.

Min, C.

Miroshnichenko, A.

A. Miroshnichenko, S. Flach, and Y. Kivshar, Rev. Mod. Phys. 82, 2257 (2010).
[CrossRef]

Moreno, E.

Moshchalkov, V.

N. Verellen, Y. Sonnefraud, H. Sobhani, F. Hao, V. Moshchalkov, P. Dorpe, P. Nordlander, and S. Maier, Nano Lett. 9, 1663 (2009).
[CrossRef]

Neutens, P.

P. Neutens, P. Van Dorpe, I. De Vlaminck, L. Lagae, and G. Borghs, Nat. Photonics 3, 283 (2009).
[CrossRef]

Nielsen, R.

Nordlander, P.

J. Lassiter, H. Sobhani, M. Knight, W. Mielczarek, P. Nordlander, and N. Halas, Nano Lett. 12, 1058 (2012).
[CrossRef]

B. Luk’yanchuk, N. Zheludev, S. Maier, N. Halas, P. Nordlander, H. Giessen, and C. Chong, Nat. Mater. 9, 707 (2010).
[CrossRef]

N. Verellen, Y. Sonnefraud, H. Sobhani, F. Hao, V. Moshchalkov, P. Dorpe, P. Nordlander, and S. Maier, Nano Lett. 9, 1663 (2009).
[CrossRef]

Papasimakis, N.

V. Fedotov, N. Papasimakis, E. Plum, A. Bitzer, M. Walther, P. Kuo, D. P. Tsai, and N. I. Zheludev, Phys. Rev. Lett. 104, 223901 (2010).
[CrossRef]

Park, J.

Plum, E.

V. Fedotov, N. Papasimakis, E. Plum, A. Bitzer, M. Walther, P. Kuo, D. P. Tsai, and N. I. Zheludev, Phys. Rev. Lett. 104, 223901 (2010).
[CrossRef]

Rahmani, M.

M. Rahmani, D. Y. Lei, V. Giannini, B. Lukiyanchuk, M. Ranjbar, T. Liew, M. Hong, and S. Maier, Nano Lett. 12, 2101 (2012).
[CrossRef]

Ranjbar, M.

M. Rahmani, D. Y. Lei, V. Giannini, B. Lukiyanchuk, M. Ranjbar, T. Liew, M. Hong, and S. Maier, Nano Lett. 12, 2101 (2012).
[CrossRef]

Rodrigo, S.

Sarrazin, M.

M. Sarrazin and J. Vigneron, Europhysics News 38(3), 27 (2007).
[CrossRef]

Sobhani, H.

J. Lassiter, H. Sobhani, M. Knight, W. Mielczarek, P. Nordlander, and N. Halas, Nano Lett. 12, 1058 (2012).
[CrossRef]

N. Verellen, Y. Sonnefraud, H. Sobhani, F. Hao, V. Moshchalkov, P. Dorpe, P. Nordlander, and S. Maier, Nano Lett. 9, 1663 (2009).
[CrossRef]

Soennichsen, C.

J. Becker, A. Truegler, A. Jakab, U. Hohenester, and C. Soennichsen, Plasmonics 5, 161 (2010).
[CrossRef]

Sonnefraud, Y.

N. Verellen, Y. Sonnefraud, H. Sobhani, F. Hao, V. Moshchalkov, P. Dorpe, P. Nordlander, and S. Maier, Nano Lett. 9, 1663 (2009).
[CrossRef]

Sonnichsen, C.

N. Liu, T. Weiss, M. Mesch, L. Langguth, U. Eigenthaler, M. Hirscher, C. Sonnichsen, and H. Giessen, Nano Lett. 10, 1103 (2010).
[CrossRef]

Sun, X.

Y. Xiao, M. Li, Y. Liu, Y. Li, X. Sun, and Q. Gong, Phys. Rev. A 82, 065804 (2010).
[CrossRef]

Taflove, A.

A. Taflove and S. Hagness, Computational Electrodynamics: The Finite-Difference Time-Domain Method3rd ed. (Artech House, 2005).

Truegler, A.

J. Becker, A. Truegler, A. Jakab, U. Hohenester, and C. Soennichsen, Plasmonics 5, 161 (2010).
[CrossRef]

Tsai, D. P.

V. Fedotov, N. Papasimakis, E. Plum, A. Bitzer, M. Walther, P. Kuo, D. P. Tsai, and N. I. Zheludev, Phys. Rev. Lett. 104, 223901 (2010).
[CrossRef]

Van, V.

Z. Han, A. Y. Elezzabi, and V. Van, Appl. Phys. Lett. 96, 131106 (2010).
[CrossRef]

Van Dorpe, P.

P. Neutens, P. Van Dorpe, I. De Vlaminck, L. Lagae, and G. Borghs, Nat. Photonics 3, 283 (2009).
[CrossRef]

Verellen, N.

N. Verellen, Y. Sonnefraud, H. Sobhani, F. Hao, V. Moshchalkov, P. Dorpe, P. Nordlander, and S. Maier, Nano Lett. 9, 1663 (2009).
[CrossRef]

Veronis, G.

Vigneron, J.

M. Sarrazin and J. Vigneron, Europhysics News 38(3), 27 (2007).
[CrossRef]

Volkov, V.

Volkov, V. S.

S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J. Y. Laluet, and T. W. Ebbesen, Nature 440, 508 (2006).
[CrossRef]

Walther, M.

V. Fedotov, N. Papasimakis, E. Plum, A. Bitzer, M. Walther, P. Kuo, D. P. Tsai, and N. I. Zheludev, Phys. Rev. Lett. 104, 223901 (2010).
[CrossRef]

Wang, G.

Wang, L.

Weiss, T.

N. Liu, M. Mesch, T. Weiss, M. Hentschel, and H. Giessen, Nano Lett. 10, 2342 (2010).
[CrossRef]

N. Liu, T. Weiss, M. Mesch, L. Langguth, U. Eigenthaler, M. Hirscher, C. Sonnichsen, and H. Giessen, Nano Lett. 10, 1103 (2010).
[CrossRef]

Xiao, Y.

Y. Xiao, M. Li, Y. Liu, Y. Li, X. Sun, and Q. Gong, Phys. Rev. A 82, 065804 (2010).
[CrossRef]

Yu, Z.

Zheludev, N.

B. Luk’yanchuk, N. Zheludev, S. Maier, N. Halas, P. Nordlander, H. Giessen, and C. Chong, Nat. Mater. 9, 707 (2010).
[CrossRef]

Zheludev, N. I.

V. Fedotov, N. Papasimakis, E. Plum, A. Bitzer, M. Walther, P. Kuo, D. P. Tsai, and N. I. Zheludev, Phys. Rev. Lett. 104, 223901 (2010).
[CrossRef]

Appl. Phys. Lett. (2)

A. Hosseini and Y. Massoud, Appl. Phys. Lett. 90, 181102 (2007).
[CrossRef]

Z. Han, A. Y. Elezzabi, and V. Van, Appl. Phys. Lett. 96, 131106 (2010).
[CrossRef]

Chin. Opt. Lett. (1)

Europhysics News (1)

M. Sarrazin and J. Vigneron, Europhysics News 38(3), 27 (2007).
[CrossRef]

Nano Lett. (5)

N. Verellen, Y. Sonnefraud, H. Sobhani, F. Hao, V. Moshchalkov, P. Dorpe, P. Nordlander, and S. Maier, Nano Lett. 9, 1663 (2009).
[CrossRef]

M. Rahmani, D. Y. Lei, V. Giannini, B. Lukiyanchuk, M. Ranjbar, T. Liew, M. Hong, and S. Maier, Nano Lett. 12, 2101 (2012).
[CrossRef]

J. Lassiter, H. Sobhani, M. Knight, W. Mielczarek, P. Nordlander, and N. Halas, Nano Lett. 12, 1058 (2012).
[CrossRef]

N. Liu, T. Weiss, M. Mesch, L. Langguth, U. Eigenthaler, M. Hirscher, C. Sonnichsen, and H. Giessen, Nano Lett. 10, 1103 (2010).
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Supplementary Material (2)

» Media 1: MOV (280 KB)     
» Media 2: MOV (190 KB)     

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Figures (4)

Fig. 1.
Fig. 1.

Schematic diagram of the MDM plasmonic dual-resonator-coupled waveguide.

Fig. 2.
Fig. 2.

(a) Spectral intensities of r1 (dashed curve), r2 (dashed-dotted curve), and r (solid curve). The parameters are estimated as ω0=2.076×1015rad/s, κ0=5.2×1012rad/s, and κ1=1×1014rad/s. L=400nm. (b) Phase term θ1(θ2) of r1(r2) and the phase difference θ2θ1. (c) Spectral intensities of |r1|2+|r2|2, 2|r1||r2|cos(θ2θ1), and R. (d) Reflection spectrum for the structure with w=50nm, d=250nm, g=5nm, and L=400nm.

Fig. 3.
Fig. 3.

(a) Reflection spectra with different CCS. (b) Evolution of the reflection spectrum with L, which is calculated by the theoretical modeling. (c) Reflection spectra obtained by FDTD simulation for different refractive indices (n) when L=400nm. (d) Position of the Fano resonance dip as a function of n and the corresponding reflection efficiencies at 940 nm.

Fig. 4.
Fig. 4.

(a) Calculated FOM (red line) and the reflection spectrum with air (blue line). (b) and (c) Field distributions |Hz| with the incident wavelength of 940 nm when n=1.00 (Media 1) and n=1.03 (Media 2). The right and left arrows indicate the incidence and reflection directions, respectively.

Equations (7)

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dadt=(jω0κ0κ1)a+ejθκ1S+11+ejθκ1S+12,
dbdt=(jω0κ0κ1)b+ejθκ1S+21+ejθκ1S+22.
S12=S+11ejθκ1a,S11=S+12ejθκ1a,
S21=S+22ejθκ1b,S22=S+21ejθκ1b,
r=ejφ(r1r2),
r1=κ1(1cosφ)j(Δωκ1sinφ)+κ0+κ1(1cosφ),
r2=κ1(1+cosφ)j(Δω+κ1sinφ)+κ0+κ1(1+cosφ).

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