Polarization beam splitter based on a two-dimensional photonic crystal of pillar type

Negatively and positively refractive behaviors are achieved in a two-dimensional photonic crystal of pillar type for TE and TM polarizations, respectively, at the same frequency. The photonic crystal is formed by a triangular lattice of silicon pillars of finite height on a silicon substrate. A pola...

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Bibliographic Details
Published in:Applied physics letters 2006-10, Vol.89 (17), p.171115
Main Authors: Ao, Xianyu, Liu, Liu, Wosinski, Lech, He, Sailing
Format: Article
Language:English
Subjects:
Electrical engineering, electronics and photonics
Elektroteknik, elektronik och fotonik
Fotonik
Photonics
TECHNOLOGY
TEKNIKVETENSKAP
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Summary:Negatively and positively refractive behaviors are achieved in a two-dimensional photonic crystal of pillar type for TE and TM polarizations, respectively, at the same frequency. The photonic crystal is formed by a triangular lattice of silicon pillars of finite height on a silicon substrate. A polarization beam splitter based on such a photonic-crystal slab is demonstrated. Measurements at near infrared wavelengths indicate that two beams of different polarizations can be split with an extinction ratio of over 10dB in a wide wavelength range.
ISSN:0003-6951
1077-3118
1077-3118
DOI:10.1063/1.2360201