Abstract

Transmission properties of two crossing dielectric slot waveguides (Si-Air-Si) are investigated using the finite difference in time domain method. Results show that the low transmission of this system mainly results from the reflection and radiation loss rather than the crosstalk. Using a simple method of filling up the crossing slots locally, the reflection, radiation losses and crosstalk are all greatly suppressed. With moderate parameters in this paper, the transmission efficient increases from 35.0% to more than 97% in a wide range of wavelength around 1.55μm. The results and method presented in this paper may be very useful in the application of slot waveguide in micro and nano photonics.

© 2011 Optical Society of America

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2011 (1)

C. Ma, Q. Zhang, and E. Van Keuren, “Direct integration of nanoscale conventional and slot waveguides,” J. Nanosci. Nanotechnol. 11, 2524–2527 (2011).
[CrossRef] [PubMed]

2010 (5)

R. Yang, R. A. Wahsheh, Z. Lu, and M. A. G. Abushagur, “Efficient light coupling between dielectric slot waveguide and plasmonic slot waveguide,” Opt. Lett. 35, 649–651 (2010).
[CrossRef] [PubMed]

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

J. Feng, Q. Li, and S. Fan, “Compact and low cross-talk silicon-on-insulator crossing using a periodic dielectric waveguide,” Opt. Lett. 35, 3904–3906 (2010).
[CrossRef] [PubMed]

W. Ding, D. Tang, Y. Liu, L. Chen, and X. Sun, “Compact and low crosstalk waveguide crossing using impedance matched metamaterial,” Appl. Phys. Lett. 96, 111114 (2010).
[CrossRef]

W. Ding, D. Tang, Y. Liu, L. Chen, and X. Sun, “Arbitrary waveguide bends using isotropic and homogeneous metamaterial,” Appl. Phys. Lett. 96, 041102 (2010).
[CrossRef]

2009 (5)

P. Sanchis, P. Villalba, F. Cuesta, A. Håkansson, A. Griol, J. V. Galán, A. Brimont, and J. Martí. “Highly efficient crossing structure for silicon-on-insulator waveguides,” Opt. Lett. 34, 2760–2762 (2009).
[CrossRef] [PubMed]

C. Ma, S. Qi, Q. Zhang, and E. Van Keuren, “High efficiency right-angle bending structures in continuous slot waveguides,” J. Opt. A, Pure Appl. Opt. 11, 105702 (2009).
[CrossRef]

M. Komatsu, K. Saitoh, and M. Koshiba, “Design of miniaturized silicon wire and slot waveguide polarization splitter based on a resonant tunneling,” Opt. Express 17, 19225–19234 (2009).
[CrossRef]

A. D. Falco, L. O’Faolain, and T. F. Krauss, “Chemical sensing in slotted photonic crystal heterostructure cavities,” Appl. Phys. Lett. 94, 063503 (2009).
[CrossRef]

J. H. Wülbern, J. Hampe, A. Petrov, M. Eich, J. Luo, A. K.-Y. Jen, A. D. Falco, T. F. Krauss, and J. Bruns, “Electro-optic modulation in slotted resonant photonic crystal heterostructures,” Appl. Phys. Lett. 94, 241107 (2009).
[CrossRef]

2008 (2)

A. D. Falco, L. O’Faolain, and T. F. Krauss, “Dispersion control and slow light in slotted photonic crystal waveguides,” Appl. Phys. Lett. 92, 083501 (2008).
[CrossRef]

C. Ma, Q. Zhang, and E. V. Keuren, “Right-angle slot waveguide bends with high bending efficiency,” Opt. Express 16, 14330–14334 (2008).
[CrossRef] [PubMed]

2007 (5)

2006 (2)

J. A. Dionne, L. A. Sweatlock, H. A. Atwater, and A. Polman, “Plasmon slot waveguides: towards chip-scale propagation with subwavelength-scale localization,” Phys. Rev. B 73, 035407 (2006).
[CrossRef]

P. A. Anderson, B. S. Schmidt, and M. Lipson, “High confinement in silicon slot waveguides with sharp bends,” Opt. Express 14, 9197–9202 (2006).
[CrossRef] [PubMed]

2004 (2)

1999 (1)

1998 (1)

1996 (1)

A. Mekis, J. C. Chen, I. Kurland, S. Fan, P. R. Villeneuve, and J. D. Joannopoulos, “High transmission through sharp bends in photonic crystals waveguides,” Phys. Rev. Lett. 77, 3787–3790 (1996).
[CrossRef] [PubMed]

Abushagur, M. A. G.

Almeida, V. R.

Anderson, P. A.

Atwater, H. A.

J. A. Dionne, L. A. Sweatlock, H. A. Atwater, and A. Polman, “Plasmon slot waveguides: towards chip-scale propagation with subwavelength-scale localization,” Phys. Rev. B 73, 035407 (2006).
[CrossRef]

Baets, R.

Barrios, C. A.

Blasco, J.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Bogaerts, W.

Brimont, A.

Bruns, J.

J. H. Wülbern, J. Hampe, A. Petrov, M. Eich, J. Luo, A. K.-Y. Jen, A. D. Falco, T. F. Krauss, and J. Bruns, “Electro-optic modulation in slotted resonant photonic crystal heterostructures,” Appl. Phys. Lett. 94, 241107 (2009).
[CrossRef]

Casquel, R.

Chen, J.

X. Chen, W. Jiang, J. Chen, L. Gu, and R. T. Chenb, “20 dB-enhanced coupling to slot photonic crystal waveguide using multimode interference coupler,” Appl. Phys. Lett. 91, 091111 (2007).
[CrossRef]

Chen, J. C.

A. Mekis, J. C. Chen, I. Kurland, S. Fan, P. R. Villeneuve, and J. D. Joannopoulos, “High transmission through sharp bends in photonic crystals waveguides,” Phys. Rev. Lett. 77, 3787–3790 (1996).
[CrossRef] [PubMed]

Chen, L.

W. Ding, D. Tang, Y. Liu, L. Chen, and X. Sun, “Compact and low crosstalk waveguide crossing using impedance matched metamaterial,” Appl. Phys. Lett. 96, 111114 (2010).
[CrossRef]

W. Ding, D. Tang, Y. Liu, L. Chen, and X. Sun, “Arbitrary waveguide bends using isotropic and homogeneous metamaterial,” Appl. Phys. Lett. 96, 041102 (2010).
[CrossRef]

Chen, X.

X. Chen, W. Jiang, J. Chen, L. Gu, and R. T. Chenb, “20 dB-enhanced coupling to slot photonic crystal waveguide using multimode interference coupler,” Appl. Phys. Lett. 91, 091111 (2007).
[CrossRef]

Chenb, R. T.

X. Chen, W. Jiang, J. Chen, L. Gu, and R. T. Chenb, “20 dB-enhanced coupling to slot photonic crystal waveguide using multimode interference coupler,” Appl. Phys. Lett. 91, 091111 (2007).
[CrossRef]

Cuesta, F.

Daldosso, N.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Ding, W.

W. Ding, D. Tang, Y. Liu, L. Chen, and X. Sun, “Compact and low crosstalk waveguide crossing using impedance matched metamaterial,” Appl. Phys. Lett. 96, 111114 (2010).
[CrossRef]

W. Ding, D. Tang, Y. Liu, L. Chen, and X. Sun, “Arbitrary waveguide bends using isotropic and homogeneous metamaterial,” Appl. Phys. Lett. 96, 041102 (2010).
[CrossRef]

Dionne, J. A.

J. A. Dionne, L. A. Sweatlock, H. A. Atwater, and A. Polman, “Plasmon slot waveguides: towards chip-scale propagation with subwavelength-scale localization,” Phys. Rev. B 73, 035407 (2006).
[CrossRef]

Dumon, P.

Eich, M.

J. H. Wülbern, J. Hampe, A. Petrov, M. Eich, J. Luo, A. K.-Y. Jen, A. D. Falco, T. F. Krauss, and J. Bruns, “Electro-optic modulation in slotted resonant photonic crystal heterostructures,” Appl. Phys. Lett. 94, 241107 (2009).
[CrossRef]

Falco, A. D.

A. D. Falco, L. O’Faolain, and T. F. Krauss, “Chemical sensing in slotted photonic crystal heterostructure cavities,” Appl. Phys. Lett. 94, 063503 (2009).
[CrossRef]

J. H. Wülbern, J. Hampe, A. Petrov, M. Eich, J. Luo, A. K.-Y. Jen, A. D. Falco, T. F. Krauss, and J. Bruns, “Electro-optic modulation in slotted resonant photonic crystal heterostructures,” Appl. Phys. Lett. 94, 241107 (2009).
[CrossRef]

A. D. Falco, L. O’Faolain, and T. F. Krauss, “Dispersion control and slow light in slotted photonic crystal waveguides,” Appl. Phys. Lett. 92, 083501 (2008).
[CrossRef]

Fan, S.

Fedeli, J. M.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Feng, J.

Galan, J. V.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Galán, J. V.

García-Rupérez, J.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Garrido, B.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Gautier, P.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Griol, A.

Gu, L.

X. Chen, W. Jiang, J. Chen, L. Gu, and R. T. Chenb, “20 dB-enhanced coupling to slot photonic crystal waveguide using multimode interference coupler,” Appl. Phys. Lett. 91, 091111 (2007).
[CrossRef]

Guider, R.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Gylfason, K. B.

Håkansson, A.

Hampe, J.

J. H. Wülbern, J. Hampe, A. Petrov, M. Eich, J. Luo, A. K.-Y. Jen, A. D. Falco, T. F. Krauss, and J. Bruns, “Electro-optic modulation in slotted resonant photonic crystal heterostructures,” Appl. Phys. Lett. 94, 241107 (2009).
[CrossRef]

Haus, H. A.

Hernandez, S.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Holgado, M.

Jen, A. K.-Y.

J. H. Wülbern, J. Hampe, A. Petrov, M. Eich, J. Luo, A. K.-Y. Jen, A. D. Falco, T. F. Krauss, and J. Bruns, “Electro-optic modulation in slotted resonant photonic crystal heterostructures,” Appl. Phys. Lett. 94, 241107 (2009).
[CrossRef]

Jiang, W.

X. Chen, W. Jiang, J. Chen, L. Gu, and R. T. Chenb, “20 dB-enhanced coupling to slot photonic crystal waveguide using multimode interference coupler,” Appl. Phys. Lett. 91, 091111 (2007).
[CrossRef]

Joannopoulos, J. D.

Johnson, S.

Jordana, E.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Keuren, E. V.

Komatsu, M.

Koshiba, M.

Krauss, T. F.

J. H. Wülbern, J. Hampe, A. Petrov, M. Eich, J. Luo, A. K.-Y. Jen, A. D. Falco, T. F. Krauss, and J. Bruns, “Electro-optic modulation in slotted resonant photonic crystal heterostructures,” Appl. Phys. Lett. 94, 241107 (2009).
[CrossRef]

A. D. Falco, L. O’Faolain, and T. F. Krauss, “Chemical sensing in slotted photonic crystal heterostructure cavities,” Appl. Phys. Lett. 94, 063503 (2009).
[CrossRef]

A. D. Falco, L. O’Faolain, and T. F. Krauss, “Dispersion control and slow light in slotted photonic crystal waveguides,” Appl. Phys. Lett. 92, 083501 (2008).
[CrossRef]

Kurland, I.

A. Mekis, J. C. Chen, I. Kurland, S. Fan, P. R. Villeneuve, and J. D. Joannopoulos, “High transmission through sharp bends in photonic crystals waveguides,” Phys. Rev. Lett. 77, 3787–3790 (1996).
[CrossRef] [PubMed]

Lebour, Y.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Li, Q.

Lipson, M.

Liu, Y.

W. Ding, D. Tang, Y. Liu, L. Chen, and X. Sun, “Compact and low crosstalk waveguide crossing using impedance matched metamaterial,” Appl. Phys. Lett. 96, 111114 (2010).
[CrossRef]

W. Ding, D. Tang, Y. Liu, L. Chen, and X. Sun, “Arbitrary waveguide bends using isotropic and homogeneous metamaterial,” Appl. Phys. Lett. 96, 041102 (2010).
[CrossRef]

Lu, Z.

Luo, J.

J. H. Wülbern, J. Hampe, A. Petrov, M. Eich, J. Luo, A. K.-Y. Jen, A. D. Falco, T. F. Krauss, and J. Bruns, “Electro-optic modulation in slotted resonant photonic crystal heterostructures,” Appl. Phys. Lett. 94, 241107 (2009).
[CrossRef]

Ma, C.

C. Ma, Q. Zhang, and E. Van Keuren, “Direct integration of nanoscale conventional and slot waveguides,” J. Nanosci. Nanotechnol. 11, 2524–2527 (2011).
[CrossRef] [PubMed]

C. Ma, S. Qi, Q. Zhang, and E. Van Keuren, “High efficiency right-angle bending structures in continuous slot waveguides,” J. Opt. A, Pure Appl. Opt. 11, 105702 (2009).
[CrossRef]

C. Ma, Q. Zhang, and E. V. Keuren, “Right-angle slot waveguide bends with high bending efficiency,” Opt. Express 16, 14330–14334 (2008).
[CrossRef] [PubMed]

Manolatou, C.

Martí, J.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

P. Sanchis, P. Villalba, F. Cuesta, A. Håkansson, A. Griol, J. V. Galán, A. Brimont, and J. Martí. “Highly efficient crossing structure for silicon-on-insulator waveguides,” Opt. Lett. 34, 2760–2762 (2009).
[CrossRef] [PubMed]

Martínez, A.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Mekis, A.

A. Mekis, J. C. Chen, I. Kurland, S. Fan, P. R. Villeneuve, and J. D. Joannopoulos, “High transmission through sharp bends in photonic crystals waveguides,” Phys. Rev. Lett. 77, 3787–3790 (1996).
[CrossRef] [PubMed]

O’Faolain, L.

A. D. Falco, L. O’Faolain, and T. F. Krauss, “Chemical sensing in slotted photonic crystal heterostructure cavities,” Appl. Phys. Lett. 94, 063503 (2009).
[CrossRef]

A. D. Falco, L. O’Faolain, and T. F. Krauss, “Dispersion control and slow light in slotted photonic crystal waveguides,” Appl. Phys. Lett. 92, 083501 (2008).
[CrossRef]

Panepucci, R. R.

Pavesi, L.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Petrov, A.

J. H. Wülbern, J. Hampe, A. Petrov, M. Eich, J. Luo, A. K.-Y. Jen, A. D. Falco, T. F. Krauss, and J. Bruns, “Electro-optic modulation in slotted resonant photonic crystal heterostructures,” Appl. Phys. Lett. 94, 241107 (2009).
[CrossRef]

Polman, A.

J. A. Dionne, L. A. Sweatlock, H. A. Atwater, and A. Polman, “Plasmon slot waveguides: towards chip-scale propagation with subwavelength-scale localization,” Phys. Rev. B 73, 035407 (2006).
[CrossRef]

Qi, S.

C. Ma, S. Qi, Q. Zhang, and E. Van Keuren, “High efficiency right-angle bending structures in continuous slot waveguides,” J. Opt. A, Pure Appl. Opt. 11, 105702 (2009).
[CrossRef]

Saitoh, K.

Sánchez, B.

Sanchis, P.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

P. Sanchis, P. Villalba, F. Cuesta, A. Håkansson, A. Griol, J. V. Galán, A. Brimont, and J. Martí. “Highly efficient crossing structure for silicon-on-insulator waveguides,” Opt. Lett. 34, 2760–2762 (2009).
[CrossRef] [PubMed]

Schmidt, B. S.

Sohlström, H.

Spano, R.

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Sun, X.

W. Ding, D. Tang, Y. Liu, L. Chen, and X. Sun, “Arbitrary waveguide bends using isotropic and homogeneous metamaterial,” Appl. Phys. Lett. 96, 041102 (2010).
[CrossRef]

W. Ding, D. Tang, Y. Liu, L. Chen, and X. Sun, “Compact and low crosstalk waveguide crossing using impedance matched metamaterial,” Appl. Phys. Lett. 96, 111114 (2010).
[CrossRef]

Sweatlock, L. A.

J. A. Dionne, L. A. Sweatlock, H. A. Atwater, and A. Polman, “Plasmon slot waveguides: towards chip-scale propagation with subwavelength-scale localization,” Phys. Rev. B 73, 035407 (2006).
[CrossRef]

Tang, D.

W. Ding, D. Tang, Y. Liu, L. Chen, and X. Sun, “Compact and low crosstalk waveguide crossing using impedance matched metamaterial,” Appl. Phys. Lett. 96, 111114 (2010).
[CrossRef]

W. Ding, D. Tang, Y. Liu, L. Chen, and X. Sun, “Arbitrary waveguide bends using isotropic and homogeneous metamaterial,” Appl. Phys. Lett. 96, 041102 (2010).
[CrossRef]

Thourhout, D. V.

Van Keuren, E.

C. Ma, Q. Zhang, and E. Van Keuren, “Direct integration of nanoscale conventional and slot waveguides,” J. Nanosci. Nanotechnol. 11, 2524–2527 (2011).
[CrossRef] [PubMed]

C. Ma, S. Qi, Q. Zhang, and E. Van Keuren, “High efficiency right-angle bending structures in continuous slot waveguides,” J. Opt. A, Pure Appl. Opt. 11, 105702 (2009).
[CrossRef]

Veronis, G.

Villalba, P.

Villeneuve, P. R.

Wahsheh, R. A.

Wülbern, J. H.

J. H. Wülbern, J. Hampe, A. Petrov, M. Eich, J. Luo, A. K.-Y. Jen, A. D. Falco, T. F. Krauss, and J. Bruns, “Electro-optic modulation in slotted resonant photonic crystal heterostructures,” Appl. Phys. Lett. 94, 241107 (2009).
[CrossRef]

Xu, Q.

Yang, R.

Zhang, Q.

C. Ma, Q. Zhang, and E. Van Keuren, “Direct integration of nanoscale conventional and slot waveguides,” J. Nanosci. Nanotechnol. 11, 2524–2527 (2011).
[CrossRef] [PubMed]

C. Ma, S. Qi, Q. Zhang, and E. Van Keuren, “High efficiency right-angle bending structures in continuous slot waveguides,” J. Opt. A, Pure Appl. Opt. 11, 105702 (2009).
[CrossRef]

C. Ma, Q. Zhang, and E. V. Keuren, “Right-angle slot waveguide bends with high bending efficiency,” Opt. Express 16, 14330–14334 (2008).
[CrossRef] [PubMed]

Appl. Phys. Lett. (6)

X. Chen, W. Jiang, J. Chen, L. Gu, and R. T. Chenb, “20 dB-enhanced coupling to slot photonic crystal waveguide using multimode interference coupler,” Appl. Phys. Lett. 91, 091111 (2007).
[CrossRef]

A. D. Falco, L. O’Faolain, and T. F. Krauss, “Dispersion control and slow light in slotted photonic crystal waveguides,” Appl. Phys. Lett. 92, 083501 (2008).
[CrossRef]

A. D. Falco, L. O’Faolain, and T. F. Krauss, “Chemical sensing in slotted photonic crystal heterostructure cavities,” Appl. Phys. Lett. 94, 063503 (2009).
[CrossRef]

J. H. Wülbern, J. Hampe, A. Petrov, M. Eich, J. Luo, A. K.-Y. Jen, A. D. Falco, T. F. Krauss, and J. Bruns, “Electro-optic modulation in slotted resonant photonic crystal heterostructures,” Appl. Phys. Lett. 94, 241107 (2009).
[CrossRef]

W. Ding, D. Tang, Y. Liu, L. Chen, and X. Sun, “Compact and low crosstalk waveguide crossing using impedance matched metamaterial,” Appl. Phys. Lett. 96, 111114 (2010).
[CrossRef]

W. Ding, D. Tang, Y. Liu, L. Chen, and X. Sun, “Arbitrary waveguide bends using isotropic and homogeneous metamaterial,” Appl. Phys. Lett. 96, 041102 (2010).
[CrossRef]

J. Lightwave Technol. (2)

J. Nanosci. Nanotechnol. (1)

C. Ma, Q. Zhang, and E. Van Keuren, “Direct integration of nanoscale conventional and slot waveguides,” J. Nanosci. Nanotechnol. 11, 2524–2527 (2011).
[CrossRef] [PubMed]

J. Opt. A, Pure Appl. Opt. (1)

C. Ma, S. Qi, Q. Zhang, and E. Van Keuren, “High efficiency right-angle bending structures in continuous slot waveguides,” J. Opt. A, Pure Appl. Opt. 11, 105702 (2009).
[CrossRef]

Nano Lett. (1)

A. Martínez, J. Blasco, P. Sanchis, J. V. Galan, J. García-Rupérez, E. Jordana, P. Gautier, Y. Lebour, S. Hernandez, R. Spano, R. Guider, N. Daldosso, B. Garrido, J. M. Fedeli, L. Pavesi, and J. Martí, “Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths,” Nano Lett. 10, 1506–1511 (2010).
[CrossRef] [PubMed]

Opt. Express (4)

Opt. Lett. (8)

S. Johnson, C. Manolatou, S. Fan, P. R. Villeneuve, J. D. Joannopoulos, and H. A. Haus, “Elimination of cross talk in waveguide intersections,” Opt. Lett. 23, 1855–1857 (1998).
[CrossRef]

C. A. Barrios, K. B. Gylfason, B. Sánchez, A. Griol, H. Sohlström, M. Holgado, and R. Casquel, “Slot-waveguide biochemical sensor,” Opt. Lett. 32, 3080–3082 (2007).
[CrossRef] [PubMed]

V. R. Almeida, Q. Xu, C. A. Barrios, and M. Lipson, “Guiding and confining light in void nanostructure,” Opt. Lett. 29, 1209–1211 (2004).
[CrossRef] [PubMed]

Q. Xu, V. R. Almeida, R. R. Panepucci, and M. Lipson, “Experimental demonstration of guiding and confining light in nanometer-size low-refractive-index material,” Opt. Lett. 29, 1626–1628 (2004).
[CrossRef] [PubMed]

R. Yang, R. A. Wahsheh, Z. Lu, and M. A. G. Abushagur, “Efficient light coupling between dielectric slot waveguide and plasmonic slot waveguide,” Opt. Lett. 35, 649–651 (2010).
[CrossRef] [PubMed]

W. Bogaerts, P. Dumon, D. V. Thourhout, and R. Baets, “Low-loss, low-cross-talk crossings for silicon-oninsulator nanophotonic waveguides,” Opt. Lett. 32, 2801–2803 (2007).
[CrossRef] [PubMed]

P. Sanchis, P. Villalba, F. Cuesta, A. Håkansson, A. Griol, J. V. Galán, A. Brimont, and J. Martí. “Highly efficient crossing structure for silicon-on-insulator waveguides,” Opt. Lett. 34, 2760–2762 (2009).
[CrossRef] [PubMed]

J. Feng, Q. Li, and S. Fan, “Compact and low cross-talk silicon-on-insulator crossing using a periodic dielectric waveguide,” Opt. Lett. 35, 3904–3906 (2010).
[CrossRef] [PubMed]

Phys. Rev. B (1)

J. A. Dionne, L. A. Sweatlock, H. A. Atwater, and A. Polman, “Plasmon slot waveguides: towards chip-scale propagation with subwavelength-scale localization,” Phys. Rev. B 73, 035407 (2006).
[CrossRef]

Phys. Rev. Lett. (1)

A. Mekis, J. C. Chen, I. Kurland, S. Fan, P. R. Villeneuve, and J. D. Joannopoulos, “High transmission through sharp bends in photonic crystals waveguides,” Phys. Rev. Lett. 77, 3787–3790 (1996).
[CrossRef] [PubMed]

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Figures (5)

Fig. 1
Fig. 1

Schematic structure and parameters of the crossing dielectric slot waveguide (DSWG). The width and refractive index (RI) of slot (yellow regions) and high RI media (light blue regions) are ws and ns, wh and nh, respectively. Around the cross center, the segments of AxBx and AyBy (dark blue regions, with a length of l) of the slots are filled up using high RI medium (nh). In, R, T, C and RL represent the incident, reflection, transmission, crosstalk and radiation loss, respectively. The two red arrows show the diffraction of the slot modes around the cross center.

Fig. 2
Fig. 2

Spectra and field distributions of direct crossing with ws = 70nm, wh = 160nm, and nh = 3.2. (a) Spectra of transmission T (line with circles), radiation loss RL (line with triangles), reflection R (line with squares), and crosstalk C (line with asterisks). (b), (c) and (d) are the field distributions of Ex, Ey and Hz at the wavelength of λ0 = 1.55μm, respectively. Red and blue colors represent positive and negative values, respectively (All the color maps of field pattern figures in this paper are the same).

Fig. 3
Fig. 3

Same as in Fig.2, except that the two segments of AxBx and AyBy with a length of l = 0.51μm are filled up using the high RI medium.

Fig. 4
Fig. 4

Changes of T, RL, R, and C with l and wh at the wavelength of 1.55μm. (a) wh = 160nm and l ∈ (260, 650)nm. (b) l = 0.5μm and wh ∈ (110, 180)nm.

Fig. 5
Fig. 5

(a) Changes of T, RL, R, and C with the crossing angle θc at λ0 = 1.55μm. Here C is the average of C1 and C2 shown in (b). (b) Field pattern of Hz at the case of θc = 85°.

Equations (2)

Equations on this page are rendered with MathJax. Learn more.

n e × l = m λ 0 / 2 ( m is an integer ) .
n e ( w 1 ) = 2.884 , n e ( w 2 ) = 3.20 , n e ( w 3 ) = 2.988

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