Optimal design of two-dimensional photonic crystal polarization splitters | Zendy

Mingyu Li | Zendy; Peifu Gu | Zendy

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Optimal design of two-dimensional photonic crystal polarization splitters

Author(s) -

Mingyu Li,

Peifu Gu

Publication year - 2005

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.54.2358

Subject(s) - photonic crystal , grating , materials science , polarization (electrochemistry) , fabrication , yablonovite , optics , band gap , optoelectronics , rod , wavelength , photonic integrated circuit , physics , medicine , chemistry , alternative medicine , pathology

A method for designing two-dimensional photonic crystal polarization splitters is put forward. Optimal structure of a two-dimensional photonic crystal with a t riangular lattice of Ge rectanglular rods in BaF2 is presented. It is shown ho w a maximum photonic band-gap for TE mode is obtained by choosing the proper wid th of the rectangular rods. The two-dimensional bandgap for TE mode of this design is 0.083(2πc/a, here a is the period of grating). The polarization frequency band corresponds to a wavelength band ranging from 172 to 24μm, with the theoretical relative bandwidth being 33.1%. The fabrication of such a pho tonic crystal polarization splitter is an easy process based on coating films on the grating and is suitable for industrial making.

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