Abstract

A compact wavelength demultiplexing structure based on arrayed metal-insulator-metal (MIM) slot cavities is proposed and demonstrated numerically. The structure consists of a bus waveguide perpendicularly coupled with a series of slot cavities, each of which captures SPPs at the resonance frequency from the bus waveguide and tunes the transmission wavelength by changing its geometrical parameters. A cavity theory model is used to design the operating wavelengths of the structure. Moreover, single band transmission of each channel and the adjustable transmission bandwidth can be obtained by altering the drop waveguide positions and the coupling distance. The proposed arrayed slot cavity-based structure could be utilized to develop ultracompact optical wavelength demultiplexing device for large-scale photonic integration.

© 2011 Optical Society of America

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[CrossRef]

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J. A. Dionne, L. A. Sweatlock, and H. A. Atwater, Phys. Rev. B 73, 035407 (2006).
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1972 (1)

P. B. Johnson and R. W. Chirty, Phys. Rev. B 6, 4370 (1972).
[CrossRef]

Akjouj, A.

A. Noual, A. Akjouj, Y. Pennec, J.-N. Gillet, and B. Djafari-Rouhani, New J. Phys. 11, 103020 (2009).
[CrossRef]

Atwater, H. A.

J. A. Dionne, L. A. Sweatlock, and H. A. Atwater, Phys. Rev. B 73, 035407 (2006).
[CrossRef]

Barnard, E. S.

Barnes, W. L.

W. L. Barnes, A. Dereux, and T. Ebbesen, Nature 424, 824 (2003).
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Berini, P.

Bozhevolnyi, S. I.

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[CrossRef] [PubMed]

Brongersma, M. L.

Chandran, A.

Chang, C. J.

Chirty, R. W.

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Deng, Q.

Dereux, A.

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A. Noual, A. Akjouj, Y. Pennec, J.-N. Gillet, and B. Djafari-Rouhani, New J. Phys. 11, 103020 (2009).
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Du, C.

Ebbesen, T.

W. L. Barnes, A. Dereux, and T. Ebbesen, Nature 424, 824 (2003).
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Fan, S.

Forsberg, E.

Z. Han, E. Forsberg, and S. He, IEEE Photonics Technol. Lett. 19, 91 (2007).
[CrossRef]

Fukui, M.

Gao, H.

García-Vidal, F. J.

E. Moreno, S. G. Rodrigo, S. I. Bozhevolnyi, L. Martín-Moreno, and F. J. García-Vidal, Phys. Rev. Lett. 100, 023901(2008).
[CrossRef] [PubMed]

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A. Noual, A. Akjouj, Y. Pennec, J.-N. Gillet, and B. Djafari-Rouhani, New J. Phys. 11, 103020 (2009).
[CrossRef]

Gong, Qi

Gong, Y.

Gong, Y. K.

Gramotnev, D. K.

Gray, S.

Gu, Y.

Han, Z.

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[CrossRef]

L. Liu, Z. Han, and S. He, Opt. Express 13, 6645 (2005).
[CrossRef] [PubMed]

Haraguchi, M.

He, S.

Z. Han, E. Forsberg, and S. He, IEEE Photonics Technol. Lett. 19, 91 (2007).
[CrossRef]

L. Liu, Z. Han, and S. He, Opt. Express 13, 6645 (2005).
[CrossRef] [PubMed]

Hu, X.

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Johnson, P. B.

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[CrossRef]

Lan, Y. C.

Lee, P. H.

Lee, T. W.

Li, J.

Lin, X.

Liu, L.

Liu, X.

Liu, X. M.

Liu, X. S.

Lu, H.

Luo, X.

Lv, Y.

Mao, D.

Martín-Moreno, L.

E. Moreno, S. G. Rodrigo, S. I. Bozhevolnyi, L. Martín-Moreno, and F. J. García-Vidal, Phys. Rev. Lett. 100, 023901(2008).
[CrossRef] [PubMed]

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Moreno, E.

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[CrossRef] [PubMed]

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[CrossRef]

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Pennec, Y.

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[CrossRef]

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Rodrigo, S. G.

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[CrossRef] [PubMed]

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Sweatlock, L. A.

J. A. Dionne, L. A. Sweatlock, and H. A. Atwater, Phys. Rev. B 73, 035407 (2006).
[CrossRef]

Tao, J.

Veronis, G.

Wang, B.

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[CrossRef]

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[CrossRef] [PubMed]

Wang, C.

Wang, G. P.

B. Wang and G. P. Wang, Appl. Phys. Lett. 87, 013107(2005).
[CrossRef]

B. Wang and G. P. Wang, Opt. Lett. 29, 1992 (2004).
[CrossRef] [PubMed]

Wang, H. Z.

Wang, L.

Wang, L. R.

Wang, T. B.

Wen, X. W.

White, J. S.

Yao, H.

Yin, C. P.

Yu, Z.

Zhu, J. H.

Appl. Phys. Lett. (2)

G. Veronis and S. Fan, Appl. Phys. Lett. 87, 131102 (2005).
[CrossRef]

B. Wang and G. P. Wang, Appl. Phys. Lett. 87, 013107(2005).
[CrossRef]

IEEE Photonics Technol. Lett. (1)

Z. Han, E. Forsberg, and S. He, IEEE Photonics Technol. Lett. 19, 91 (2007).
[CrossRef]

Nature (1)

W. L. Barnes, A. Dereux, and T. Ebbesen, Nature 424, 824 (2003).
[CrossRef] [PubMed]

New J. Phys. (1)

A. Noual, A. Akjouj, Y. Pennec, J.-N. Gillet, and B. Djafari-Rouhani, New J. Phys. 11, 103020 (2009).
[CrossRef]

Opt. Express (7)

Opt. Lett. (9)

Phys. Rev. B (2)

J. A. Dionne, L. A. Sweatlock, and H. A. Atwater, Phys. Rev. B 73, 035407 (2006).
[CrossRef]

P. B. Johnson and R. W. Chirty, Phys. Rev. B 6, 4370 (1972).
[CrossRef]

Phys. Rev. Lett. (1)

E. Moreno, S. G. Rodrigo, S. I. Bozhevolnyi, L. Martín-Moreno, and F. J. García-Vidal, Phys. Rev. Lett. 100, 023901(2008).
[CrossRef] [PubMed]

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Figures (4)

Fig. 1
Fig. 1

Schematics of 1 × N wavelength demultiplexing structure based on plasmonic slot cavities.

Fig. 2
Fig. 2

(a) Transmission spectra of three channels of the proposed demultiplexing structure with three slot cavities. (b) Transmission wavelength of each channel as a function of cavity length L with w t = 50 nm . The contour profiles of field H y of the structure at different wavelengths of (c)  λ = 980 nm , (d)  λ = 1310 nm , and (e)  λ = 1550 nm .

Fig. 3
Fig. 3

(a) Schematics of 1 × 3 wavelength demultiplexing structure with d 1 = 150 nm , d 2 = 200 nm , h 2 = 100 nm , and h 3 = 120 nm . (b) Transmission spectra of three channels of the demultiplexing structure with the drop waveguides of channel 2 and 3 in the positions A and B.

Fig. 4
Fig. 4

(a) Transmission spectra of the drop waveguide at various coupling distances for cavity length L = 390 nm . Inset, the dependence of FWHM on the coupling distance for L = 390 nm . (b) Transmission spectra of 1 × 6 wavelength demultiplexing structure with t = 15 nm , L 1 = 250 nm , L 2 = 285 nm , L 3 = 320 nm , L 4 = 355 nm , L 5 = 390 nm , and L 6 = 425 nm .

Equations (4)

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ε d k m + ε m k d tanh ( k d 2 w ) = 0 ,
k d = ( β 2 ε d k 0 2 ) 1 / 2 , k m = ( β 2 ε m k 0 2 ) 1 / 2 ,
n eff = β / k 0 ,
λ m = 2 n eff L / ( m ϕ r / 2 π ) .

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