Polarization Modulation by free-Standing Asymmetric Hole Arrays

We theoretically demonstrate modulation of light polarization by a crossed rectangular hole array with asymmetric arm lengths. There are two waveguide modes that can modulate the x- and y- polarized incident waves independently. A specific structure is proposed to convert a left-hand incident wave to a right-hand outgoing wave by transmission.

Authors:

• Hong-Wen Hsieh
• Shun-Tung Yen

Keywords:

• Crossed rectangular hole array
• extraordinary optical transmission
• polarization modulation.

References:

[1] T. W. Ebbesen, H. J. Lezec, H. F. Ghaemi, T. Thio, and P. A. Wolff,
"Extraordinary optical transmission through sub-wavelength hole arrays,"
Nature (London), vol. 391, pp.667-669, Feb 1998.
[2] L. Martin-Moreno, F. J. Garcia-Vidal, H. J. Lezec, K. M. Pellerin, T. Thio,
J. B. Pendry, and T. W. Ebbesen, "Theory of Extraordinary Optical
Transmission through Subwavelength Hole Arrays," Phys. Rev. Lett., vol.
86, no. 6, pp. 1114-1117, Feb 2001.
[3] K. J. Klein Koerkamp, S. Enoch, F. B. Segerink, N. F. van Hulst and L.
Kuipers, "Strong Influence of Hole Shape on Extraordinary Transmission
through Periodic Arrays of Subwavelength Holes," Phys. Rev. Lett., vol.
92, no. 18, pp. 183901-1-183901-4, May 2004.
[4] F. J. Garcia de Abajo, R. Gomez-Medina, and J. J. Saenz, "Full
transmission through perfect-conductor subwavelength hole arrays,"
Phys. Rev. E., vol. 72, no. 1, pp. 016608-1-016608-4, Jul 2005.
[5] Chia-Yi Chen, Ming-Wei Tsai, Tzu-Hung Chuang, Yi-Tsung Chang, and
Si-Chen Lee, "Extraordinary transmission through a silver film perforated
with cross shaped hole arrays in a square lattice," Appl. Phys. Lett., vol.
91, pp. 063108-1-063108-3, Aug 2007.
[6] Yong Ma, A. Khalid, Timothy D. Drysdale, and David R. S. Cumming,
"Direct fabrication of terahertz optical devices on low-absorption polymer
substrates," Opt. Lett., vol. 34, no. 10, pp. 1555-1557, May 2009.
[7] R. C. Compton, R. C. McPhedran, G. H. Derrick, and L. C. Botten,
"Diffraction properties of a bandpass grid," Infrared Phys., vol. 23, no. 5,
pp. 239-245, Sep 1983.
[8] F. L. Lin, "Modal Characteristics of Crossed Rectangular Waveguides,"
IEEE Trans. Microwave Theory Tech., vol. MTT-25, no. 9, pp. 756-763,
Sep 1977.