Wave Transmission in Dispersive Si-Based One Dimensional Photonic Crystal

• 作者: A. Bhargva Arun Kumar B. Suthar Kh. S. Singh S. P. Ojha Vinay Kumar Vipin Kumar
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 工学
• 关键词: PHOTONIC CRYSTALS OMNI-DIRECTIONAL REFLECTION Optical Filter
• 年，卷（期）: 2012,（3）
• 页码范围: 237-241
• 页数: 5页
• 分类号: TN2

摘要

Transmission of electromagnetic waves through a Si-based one dimensional photonic crystal has been investigated. The proposed structure works as an omni-directional reflector for a certain range of wavelength for an angle of incidence up to 55?. The structure works as a narrow band TM-polarization filter for an angle of incidence more than 55?, i.e. a filter which completely blocks TE-polarized waves but allows certain wavelengths of TM-polarized waves. But at an angle of incidence of 89?, the structure works as a multiple narrow band TM-polarization filter even though no defect layer is introduced inside the structure. It is also found that this multiple narrow pass-bands of TM-polarized waves can be tuned to a desired range of wavelength by changing the temperature of the structure.