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Chinese Optics Letters

Chinese Optics Letters


  • Editor: Zhizhan Xu
  • Vol. 10, Iss. 11 — Nov. 1, 2012
  • pp: 112301–112301

Wide band polarizer with suspended germanium resonant grating

Wugang Cao, Jianyong Ma, and Changhe Zhou  »View Author Affiliations

Chinese Optics Letters, Vol. 10, Issue 11, pp. 112301-112301 (2012)

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An ultra broad band polarizer that operates in the telecommunication wavelength band is proposed. This device, which consists of a single suspended germanium resonant grating layer, is designed using the inverse mathematical method and the rigorous vector diffraction theory. Calculated results indicate that the ultra broad band polarizer exhibits extremely high reflection (R>99%) for TE polarization light and high transmission (T>99%) for TM polarization at the wavelength range greater than 300 nm, and it has an extinction ratio of approximately 1 000 at the 1 550-nm central wavelength. The results of the rigorous coupled wave analysis indicate that the extremely wide band property of the TE polarization is caused by the excitation of strong modulation guided modes in the design wavelength range.

© 2012 Chinese Optics Letters

OCIS Codes
(230.0230) Optical devices : Optical devices
(230.5440) Optical devices : Polarization-selective devices

ToC Category:
Optical Devices

Wugang Cao, Jianyong Ma, and Changhe Zhou, "Wide band polarizer with suspended germanium resonant grating," Chin. Opt. Lett. 10, 112301-112301 (2012)

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