Abstract

A waveguiding configuration for surface plasmon polaritons (SPPs) featuring simultaneously a tight mode confinement and long propagation (several millimeters) at telecom wavelengths is proposed and analyzed using the finite-element method. The configuration represents a long-range dielectric-loaded SPP waveguide (LR-DLSPPW), in which a thin and narrow metal stripe is sandwiched between a square dielectric ridge and a dielectric film supported by a low-index substrate. Considering optical polymers, for example, we calculated that a 15-nm-thick and 500-nm-wide gold stripe placed on a 460 nm thick medium-index (1.49) layer supported by a low-index (1.34) substrate and topped by a 850 × 850 nm2 high-index (1.535) ridge supports a fundamental LR-DLSPPW mode having width of 1.6 μm and propagating over 3.1 mm at the wavelength λ = 1.55 μm. The proposed configuration allows for easy connection to electrodes enabling, e.g., thermo- or electro-optic control, and is technologically simple being compatible with planar fabrication using UV-lithography.

© 2010 Optical Society of America

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    [CrossRef]

2010 (4)

D. K. Gramotnev, and S. I. Bozhevolnyi, "Plasmonics beyond the diffraction limit," Nat. Photonics 4, 83-91 (2010).
[CrossRef]

J. Gosciniak, S. I. Bozhevolnyi, T. B. Andersen, V. S. Volkov, J. Kjelstrup-Hansen, L. Markey, and A. Dereux, "Thermo-optic control of dielectric-loaded plasmonic waveguide components," Opt. Express 18, 1207-1216 (2010).
[CrossRef] [PubMed]

I. D. Leon, and P. Berini, "Amplification of long-range surface plasmons by a dipolar gain medium," Nat. Photonics 4, 382-387 (2010).
[CrossRef]

M. C. Gather, K. Meerholz, N. Danz, and K. Leosson, "Net optical gain in a plasmonic waveguide embedded in a fluorescent polymer," Nat. Photonics 4, 457-461 (2010).
[CrossRef]

2009 (5)

J. Grandidier, G. C. des Francs, S. Massenot, A. Bouhelier, L. Markey, J.-C. Weeber, C. Finot, and A. Dereux, "Gain-assisted propagation in a plasmonic waveguide at telecom wavelength," Nano Lett. 9, 2935-2939 (2009).
[CrossRef] [PubMed]

Y. Binfeng, H. Guohua, and C. Yiping, "Bound modes analysis of symmetric dielectric loaded surface plasmon-polariton waveguides," Opt. Express 17, 3610-3618 (2009).
[CrossRef] [PubMed]

J. Chen, Z. Li, S. Yue, and Q. Gong, "Hybrid long-range surface plasmon-polariton modes with tight field confinement guided by asymmetrical waveguides," Opt. Express 17, 23603-23609 (2009).
[CrossRef]

T. Holmgaard, Z. Chen, S. I. Bozhevolnyi, L. Markey, A. Dereux, A. V. Krasavin, and A. V. Zayats, "Wavelength selection by dielectric-loaded plasmonic components," Appl. Phys. Lett. 94, 051111 (2009).
[CrossRef]

T. Holmgaard, Z. Chen, S. I. Bozhevolnyi, L. Markey, and A. Dereux, "Design and characterization of dielectric-loaded plasmonic directional couplers," J. Lightwave Technol. 27, 5521-5528 (2009).
[CrossRef]

2008 (2)

R. F. Oulton, G. Bartal, D. F. P. Pile, and X. Zhang, "Confinement and propagation characteristics of subwavelength plasmonic modes," N. J. Phys. 10, 105018 (2008).
[CrossRef]

A. V. Krasavin, and A. V. Zayats, "Three-dimensional numerical modeling of photonic integration with dielectric-loaded spp waveguides," Phys. Rev. B 78, 045425 (2008).
[CrossRef]

2007 (2)

T. Holmgaard, and S. I. Bozhevolnyi, "Theoretical analysis of dielectric-loaded surface plasmon-polariton waveguides," Phys. Rev. B 75, 245405 (2007).
[CrossRef]

S. Lal, S. Link, and N. J. Halas, "Nano-optics from sensing to waveguiding," Nat. Photonics 1, 641-648 (2007).
[CrossRef]

2006 (3)

2005 (1)

2004 (1)

T. Nikolajsen, K. Leosson, and S. I. Bozhevolnyi, "Surface plasmon polariton based modulators and switches operating at telecom wavelengths," Appl. Phys. Lett. 85, 5833-5835 (2004).
[CrossRef]

2003 (1)

W. L. Barnes, A. Dereux, and T. W. Ebbesen, "Surface plasmon subwavelength optics," Nature 424, 824-830 (2003).
[CrossRef] [PubMed]

2002 (1)

I. V. Novikov, and A. A. Maradudin, "Channel polaritons," Phys. Rev. B 66, 035403 (2002).
[CrossRef]

2000 (1)

P. Berini, "Plasmon-polariton waves guided by thin lossy metal films of finite width: Bound modes of symmetric structures," Phys. Rev. B 61, 10484 (2000).
[CrossRef]

1998 (1)

1997 (1)

1986 (1)

J. J. Burke, G. I. Stegeman, and T. Tamir, "Surface-polariton-like waves guided by thin, lossy metal films," Phys. Rev. B 33, 5186-5201 (1986).
[CrossRef]

Andersen, T. B.

Aussenegg, F. R.

B. Steinberger, A. Hohenau, H. Ditlbacher, A. L. Stepanov, A. Drezet, F. R. Aussenegg, A. Leitner, and J. R. Krenn, "Dielectric stripes on gold as surface plasmon waveguides," Appl. Phys. Lett. 88, 094104 (2006).
[CrossRef]

M. Quinten, A. Leitner, J. R. Krenn, and F. R. Aussenegg, "Electromagnetic energy transport via linear chains of silver nanoparticles," Opt. Lett. 23, 1331 (1998).
[CrossRef]

Barnes, W. L.

W. L. Barnes, A. Dereux, and T. W. Ebbesen, "Surface plasmon subwavelength optics," Nature 424, 824-830 (2003).
[CrossRef] [PubMed]

Bartal, G.

R. F. Oulton, G. Bartal, D. F. P. Pile, and X. Zhang, "Confinement and propagation characteristics of subwavelength plasmonic modes," N. J. Phys. 10, 105018 (2008).
[CrossRef]

Berini, P.

I. D. Leon, and P. Berini, "Amplification of long-range surface plasmons by a dipolar gain medium," Nat. Photonics 4, 382-387 (2010).
[CrossRef]

P. Berini, "Plasmon-polariton waves guided by thin lossy metal films of finite width: Bound modes of symmetric structures," Phys. Rev. B 61, 10484 (2000).
[CrossRef]

Binfeng, Y.

Boltasseva, A.

Bouhelier, A.

J. Grandidier, G. C. des Francs, S. Massenot, A. Bouhelier, L. Markey, J.-C. Weeber, C. Finot, and A. Dereux, "Gain-assisted propagation in a plasmonic waveguide at telecom wavelength," Nano Lett. 9, 2935-2939 (2009).
[CrossRef] [PubMed]

Bozhevolnyi, S. I.

D. K. Gramotnev, and S. I. Bozhevolnyi, "Plasmonics beyond the diffraction limit," Nat. Photonics 4, 83-91 (2010).
[CrossRef]

J. Gosciniak, S. I. Bozhevolnyi, T. B. Andersen, V. S. Volkov, J. Kjelstrup-Hansen, L. Markey, and A. Dereux, "Thermo-optic control of dielectric-loaded plasmonic waveguide components," Opt. Express 18, 1207-1216 (2010).
[CrossRef] [PubMed]

T. Holmgaard, Z. Chen, S. I. Bozhevolnyi, L. Markey, and A. Dereux, "Design and characterization of dielectric-loaded plasmonic directional couplers," J. Lightwave Technol. 27, 5521-5528 (2009).
[CrossRef]

T. Holmgaard, Z. Chen, S. I. Bozhevolnyi, L. Markey, A. Dereux, A. V. Krasavin, and A. V. Zayats, "Wavelength selection by dielectric-loaded plasmonic components," Appl. Phys. Lett. 94, 051111 (2009).
[CrossRef]

T. Holmgaard, and S. I. Bozhevolnyi, "Theoretical analysis of dielectric-loaded surface plasmon-polariton waveguides," Phys. Rev. B 75, 245405 (2007).
[CrossRef]

C. Reinhardt, S. Passinger, B. N. Chichkov, C. Marquart, I. P. Radko, and S. I. Bozhevolnyi, "Laser-fabricated dielectric optical components for surface plasmon polaritons," Opt. Lett. 31, 1307-1309 (2006).
[CrossRef] [PubMed]

A. Boltasseva, T. Nikolajsen, K. Leosson, K. Kjaer, M. S. Larsen, and S. I. Bozhevolnyi, "Integrated optical components utilizing long-range surface plasmon polaritons," J. Lightwave Technol. 23, 413 (2005).
[CrossRef]

T. Nikolajsen, K. Leosson, and S. I. Bozhevolnyi, "Surface plasmon polariton based modulators and switches operating at telecom wavelengths," Appl. Phys. Lett. 85, 5833-5835 (2004).
[CrossRef]

Burke, J. J.

J. J. Burke, G. I. Stegeman, and T. Tamir, "Surface-polariton-like waves guided by thin, lossy metal films," Phys. Rev. B 33, 5186-5201 (1986).
[CrossRef]

Chen, J.

Chen, Z.

T. Holmgaard, Z. Chen, S. I. Bozhevolnyi, L. Markey, and A. Dereux, "Design and characterization of dielectric-loaded plasmonic directional couplers," J. Lightwave Technol. 27, 5521-5528 (2009).
[CrossRef]

T. Holmgaard, Z. Chen, S. I. Bozhevolnyi, L. Markey, A. Dereux, A. V. Krasavin, and A. V. Zayats, "Wavelength selection by dielectric-loaded plasmonic components," Appl. Phys. Lett. 94, 051111 (2009).
[CrossRef]

Chichkov, B. N.

Danz, N.

M. C. Gather, K. Meerholz, N. Danz, and K. Leosson, "Net optical gain in a plasmonic waveguide embedded in a fluorescent polymer," Nat. Photonics 4, 457-461 (2010).
[CrossRef]

Dereux, A.

J. Gosciniak, S. I. Bozhevolnyi, T. B. Andersen, V. S. Volkov, J. Kjelstrup-Hansen, L. Markey, and A. Dereux, "Thermo-optic control of dielectric-loaded plasmonic waveguide components," Opt. Express 18, 1207-1216 (2010).
[CrossRef] [PubMed]

T. Holmgaard, Z. Chen, S. I. Bozhevolnyi, L. Markey, and A. Dereux, "Design and characterization of dielectric-loaded plasmonic directional couplers," J. Lightwave Technol. 27, 5521-5528 (2009).
[CrossRef]

T. Holmgaard, Z. Chen, S. I. Bozhevolnyi, L. Markey, A. Dereux, A. V. Krasavin, and A. V. Zayats, "Wavelength selection by dielectric-loaded plasmonic components," Appl. Phys. Lett. 94, 051111 (2009).
[CrossRef]

J. Grandidier, G. C. des Francs, S. Massenot, A. Bouhelier, L. Markey, J.-C. Weeber, C. Finot, and A. Dereux, "Gain-assisted propagation in a plasmonic waveguide at telecom wavelength," Nano Lett. 9, 2935-2939 (2009).
[CrossRef] [PubMed]

W. L. Barnes, A. Dereux, and T. W. Ebbesen, "Surface plasmon subwavelength optics," Nature 424, 824-830 (2003).
[CrossRef] [PubMed]

DeRose, G. A.

des Francs, G. C.

J. Grandidier, G. C. des Francs, S. Massenot, A. Bouhelier, L. Markey, J.-C. Weeber, C. Finot, and A. Dereux, "Gain-assisted propagation in a plasmonic waveguide at telecom wavelength," Nano Lett. 9, 2935-2939 (2009).
[CrossRef] [PubMed]

Ditlbacher, H.

B. Steinberger, A. Hohenau, H. Ditlbacher, A. L. Stepanov, A. Drezet, F. R. Aussenegg, A. Leitner, and J. R. Krenn, "Dielectric stripes on gold as surface plasmon waveguides," Appl. Phys. Lett. 88, 094104 (2006).
[CrossRef]

Drezet, A.

B. Steinberger, A. Hohenau, H. Ditlbacher, A. L. Stepanov, A. Drezet, F. R. Aussenegg, A. Leitner, and J. R. Krenn, "Dielectric stripes on gold as surface plasmon waveguides," Appl. Phys. Lett. 88, 094104 (2006).
[CrossRef]

Ebbesen, T. W.

W. L. Barnes, A. Dereux, and T. W. Ebbesen, "Surface plasmon subwavelength optics," Nature 424, 824-830 (2003).
[CrossRef] [PubMed]

Finot, C.

J. Grandidier, G. C. des Francs, S. Massenot, A. Bouhelier, L. Markey, J.-C. Weeber, C. Finot, and A. Dereux, "Gain-assisted propagation in a plasmonic waveguide at telecom wavelength," Nano Lett. 9, 2935-2939 (2009).
[CrossRef] [PubMed]

Gather, M. C.

M. C. Gather, K. Meerholz, N. Danz, and K. Leosson, "Net optical gain in a plasmonic waveguide embedded in a fluorescent polymer," Nat. Photonics 4, 457-461 (2010).
[CrossRef]

Gong, Q.

Gosciniak, J.

Gramotnev, D. K.

D. K. Gramotnev, and S. I. Bozhevolnyi, "Plasmonics beyond the diffraction limit," Nat. Photonics 4, 83-91 (2010).
[CrossRef]

Grandidier, J.

J. Grandidier, G. C. des Francs, S. Massenot, A. Bouhelier, L. Markey, J.-C. Weeber, C. Finot, and A. Dereux, "Gain-assisted propagation in a plasmonic waveguide at telecom wavelength," Nano Lett. 9, 2935-2939 (2009).
[CrossRef] [PubMed]

Guohua, H.

Halas, N. J.

S. Lal, S. Link, and N. J. Halas, "Nano-optics from sensing to waveguiding," Nat. Photonics 1, 641-648 (2007).
[CrossRef]

Hohenau, A.

B. Steinberger, A. Hohenau, H. Ditlbacher, A. L. Stepanov, A. Drezet, F. R. Aussenegg, A. Leitner, and J. R. Krenn, "Dielectric stripes on gold as surface plasmon waveguides," Appl. Phys. Lett. 88, 094104 (2006).
[CrossRef]

Holmgaard, T.

T. Holmgaard, Z. Chen, S. I. Bozhevolnyi, L. Markey, A. Dereux, A. V. Krasavin, and A. V. Zayats, "Wavelength selection by dielectric-loaded plasmonic components," Appl. Phys. Lett. 94, 051111 (2009).
[CrossRef]

T. Holmgaard, Z. Chen, S. I. Bozhevolnyi, L. Markey, and A. Dereux, "Design and characterization of dielectric-loaded plasmonic directional couplers," J. Lightwave Technol. 27, 5521-5528 (2009).
[CrossRef]

T. Holmgaard, and S. I. Bozhevolnyi, "Theoretical analysis of dielectric-loaded surface plasmon-polariton waveguides," Phys. Rev. B 75, 245405 (2007).
[CrossRef]

Kjaer, K.

Kjelstrup-Hansen, J.

Kobayashi, T.

Krasavin, A. V.

T. Holmgaard, Z. Chen, S. I. Bozhevolnyi, L. Markey, A. Dereux, A. V. Krasavin, and A. V. Zayats, "Wavelength selection by dielectric-loaded plasmonic components," Appl. Phys. Lett. 94, 051111 (2009).
[CrossRef]

A. V. Krasavin, and A. V. Zayats, "Three-dimensional numerical modeling of photonic integration with dielectric-loaded spp waveguides," Phys. Rev. B 78, 045425 (2008).
[CrossRef]

Krenn, J. R.

B. Steinberger, A. Hohenau, H. Ditlbacher, A. L. Stepanov, A. Drezet, F. R. Aussenegg, A. Leitner, and J. R. Krenn, "Dielectric stripes on gold as surface plasmon waveguides," Appl. Phys. Lett. 88, 094104 (2006).
[CrossRef]

M. Quinten, A. Leitner, J. R. Krenn, and F. R. Aussenegg, "Electromagnetic energy transport via linear chains of silver nanoparticles," Opt. Lett. 23, 1331 (1998).
[CrossRef]

Lal, S.

S. Lal, S. Link, and N. J. Halas, "Nano-optics from sensing to waveguiding," Nat. Photonics 1, 641-648 (2007).
[CrossRef]

Larsen, M. S.

Leitner, A.

B. Steinberger, A. Hohenau, H. Ditlbacher, A. L. Stepanov, A. Drezet, F. R. Aussenegg, A. Leitner, and J. R. Krenn, "Dielectric stripes on gold as surface plasmon waveguides," Appl. Phys. Lett. 88, 094104 (2006).
[CrossRef]

M. Quinten, A. Leitner, J. R. Krenn, and F. R. Aussenegg, "Electromagnetic energy transport via linear chains of silver nanoparticles," Opt. Lett. 23, 1331 (1998).
[CrossRef]

Leon, I. D.

I. D. Leon, and P. Berini, "Amplification of long-range surface plasmons by a dipolar gain medium," Nat. Photonics 4, 382-387 (2010).
[CrossRef]

Leosson, K.

M. C. Gather, K. Meerholz, N. Danz, and K. Leosson, "Net optical gain in a plasmonic waveguide embedded in a fluorescent polymer," Nat. Photonics 4, 457-461 (2010).
[CrossRef]

A. Boltasseva, T. Nikolajsen, K. Leosson, K. Kjaer, M. S. Larsen, and S. I. Bozhevolnyi, "Integrated optical components utilizing long-range surface plasmon polaritons," J. Lightwave Technol. 23, 413 (2005).
[CrossRef]

T. Nikolajsen, K. Leosson, and S. I. Bozhevolnyi, "Surface plasmon polariton based modulators and switches operating at telecom wavelengths," Appl. Phys. Lett. 85, 5833-5835 (2004).
[CrossRef]

Li, Z.

Link, S.

S. Lal, S. Link, and N. J. Halas, "Nano-optics from sensing to waveguiding," Nat. Photonics 1, 641-648 (2007).
[CrossRef]

Maradudin, A. A.

I. V. Novikov, and A. A. Maradudin, "Channel polaritons," Phys. Rev. B 66, 035403 (2002).
[CrossRef]

Markey, L.

J. Gosciniak, S. I. Bozhevolnyi, T. B. Andersen, V. S. Volkov, J. Kjelstrup-Hansen, L. Markey, and A. Dereux, "Thermo-optic control of dielectric-loaded plasmonic waveguide components," Opt. Express 18, 1207-1216 (2010).
[CrossRef] [PubMed]

T. Holmgaard, Z. Chen, S. I. Bozhevolnyi, L. Markey, and A. Dereux, "Design and characterization of dielectric-loaded plasmonic directional couplers," J. Lightwave Technol. 27, 5521-5528 (2009).
[CrossRef]

T. Holmgaard, Z. Chen, S. I. Bozhevolnyi, L. Markey, A. Dereux, A. V. Krasavin, and A. V. Zayats, "Wavelength selection by dielectric-loaded plasmonic components," Appl. Phys. Lett. 94, 051111 (2009).
[CrossRef]

J. Grandidier, G. C. des Francs, S. Massenot, A. Bouhelier, L. Markey, J.-C. Weeber, C. Finot, and A. Dereux, "Gain-assisted propagation in a plasmonic waveguide at telecom wavelength," Nano Lett. 9, 2935-2939 (2009).
[CrossRef] [PubMed]

Marquart, C.

Massenot, S.

J. Grandidier, G. C. des Francs, S. Massenot, A. Bouhelier, L. Markey, J.-C. Weeber, C. Finot, and A. Dereux, "Gain-assisted propagation in a plasmonic waveguide at telecom wavelength," Nano Lett. 9, 2935-2939 (2009).
[CrossRef] [PubMed]

Meerholz, K.

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T. Nikolajsen, K. Leosson, and S. I. Bozhevolnyi, "Surface plasmon polariton based modulators and switches operating at telecom wavelengths," Appl. Phys. Lett. 85, 5833-5835 (2004).
[CrossRef]

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I. V. Novikov, and A. A. Maradudin, "Channel polaritons," Phys. Rev. B 66, 035403 (2002).
[CrossRef]

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R. F. Oulton, G. Bartal, D. F. P. Pile, and X. Zhang, "Confinement and propagation characteristics of subwavelength plasmonic modes," N. J. Phys. 10, 105018 (2008).
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Pile, D. F. P.

R. F. Oulton, G. Bartal, D. F. P. Pile, and X. Zhang, "Confinement and propagation characteristics of subwavelength plasmonic modes," N. J. Phys. 10, 105018 (2008).
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Quinten, M.

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B. Steinberger, A. Hohenau, H. Ditlbacher, A. L. Stepanov, A. Drezet, F. R. Aussenegg, A. Leitner, and J. R. Krenn, "Dielectric stripes on gold as surface plasmon waveguides," Appl. Phys. Lett. 88, 094104 (2006).
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R. F. Oulton, G. Bartal, D. F. P. Pile, and X. Zhang, "Confinement and propagation characteristics of subwavelength plasmonic modes," N. J. Phys. 10, 105018 (2008).
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Appl. Phys. Lett. (3)

B. Steinberger, A. Hohenau, H. Ditlbacher, A. L. Stepanov, A. Drezet, F. R. Aussenegg, A. Leitner, and J. R. Krenn, "Dielectric stripes on gold as surface plasmon waveguides," Appl. Phys. Lett. 88, 094104 (2006).
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T. Holmgaard, Z. Chen, S. I. Bozhevolnyi, L. Markey, A. Dereux, A. V. Krasavin, and A. V. Zayats, "Wavelength selection by dielectric-loaded plasmonic components," Appl. Phys. Lett. 94, 051111 (2009).
[CrossRef]

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[CrossRef]

J. Lightwave Technol. (2)

N. J. Phys. (1)

R. F. Oulton, G. Bartal, D. F. P. Pile, and X. Zhang, "Confinement and propagation characteristics of subwavelength plasmonic modes," N. J. Phys. 10, 105018 (2008).
[CrossRef]

Nano Lett. (1)

J. Grandidier, G. C. des Francs, S. Massenot, A. Bouhelier, L. Markey, J.-C. Weeber, C. Finot, and A. Dereux, "Gain-assisted propagation in a plasmonic waveguide at telecom wavelength," Nano Lett. 9, 2935-2939 (2009).
[CrossRef] [PubMed]

Nat. Photonics (4)

D. K. Gramotnev, and S. I. Bozhevolnyi, "Plasmonics beyond the diffraction limit," Nat. Photonics 4, 83-91 (2010).
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I. D. Leon, and P. Berini, "Amplification of long-range surface plasmons by a dipolar gain medium," Nat. Photonics 4, 382-387 (2010).
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M. C. Gather, K. Meerholz, N. Danz, and K. Leosson, "Net optical gain in a plasmonic waveguide embedded in a fluorescent polymer," Nat. Photonics 4, 457-461 (2010).
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Nature (1)

W. L. Barnes, A. Dereux, and T. W. Ebbesen, "Surface plasmon subwavelength optics," Nature 424, 824-830 (2003).
[CrossRef] [PubMed]

Opt. Express (3)

Opt. Lett. (4)

Phys. Rev. B (5)

T. Holmgaard, and S. I. Bozhevolnyi, "Theoretical analysis of dielectric-loaded surface plasmon-polariton waveguides," Phys. Rev. B 75, 245405 (2007).
[CrossRef]

I. V. Novikov, and A. A. Maradudin, "Channel polaritons," Phys. Rev. B 66, 035403 (2002).
[CrossRef]

P. Berini, "Plasmon-polariton waves guided by thin lossy metal films of finite width: Bound modes of symmetric structures," Phys. Rev. B 61, 10484 (2000).
[CrossRef]

A. V. Krasavin, and A. V. Zayats, "Three-dimensional numerical modeling of photonic integration with dielectric-loaded spp waveguides," Phys. Rev. B 78, 045425 (2008).
[CrossRef]

J. J. Burke, G. I. Stegeman, and T. Tamir, "Surface-polariton-like waves guided by thin, lossy metal films," Phys. Rev. B 33, 5186-5201 (1986).
[CrossRef]

Other (2)

E. D. Palik, Handbook of Optical Constants of Solids (Academic, New York, 1985), 1st ed.

H. Raether, Surface Plasmons on Smooth and Rough Surfaces and on Gratings (Springer-Verlag, Berlin, 1988), 1st ed.

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Figures (5)

Fig. 1
Fig. 1

(Color online) Layout of the LR-DLSPPW structure, with a dielectric ridge on top of a thin metal stripe deposited on an underlying dielectric layer supported by a low-index glass substrate.

Fig. 2
Fig. 2

(Color online) Field distribution of abs(Ez) in the cross-section of the LR-DLSPPW with the parameters h = 850 nm, w = 850 nm, and t = 460 nm. Insert shows a vertical profile of Ez through the center of the ridge.

Fig. 3
Fig. 3

(Color online) Real part of the mode effective index and the propagation length versus thickness of the PMMA layer for two different ridge dimensions.

Fig. 4
Fig. 4

(Color online) (a) Mode width (log scale) versus thickness of the PMMA layer for the ridge dimensions h = 800 nm, w = 800 nm and h = 850 nm, w = 850 nm. The insets show En(y) at t = 180 nm and t = 400 nm. (b) Normalized effective mode area (log scale) versus thickness of the PMMA layer for same ridge dimensions as in (a). The insets show the norm of the power flow at t = 180 nm and t = 400 nm.

Fig. 5
Fig. 5

(Color online) The dependence of the real part of the mode effective index and the propagation length (log scale) on the width of the Au stripe for the BCB ridge dimensions h = 850 nm, w = 850 nm, and thickness of the PMMA layer t = 460 nm. The insert shows the field distribution at a stripe width of 1.8 μm

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