Chinese Optics Letters, 2011, 9 (8): 080501, Published Online: Jun. 20, 2011
Multimode resonance bandpass filter with twin wideband channels 
Download： 881次
导模共振 光栅 模式 带通滤光片 矩形度 050.1950 Diffraction gratings 310.2790 Guided waves 310.6860 Thin films, optical properties
Abstract
A bandpass filter with twin wideband channels in a single-layer guided-mode resonance grating is presented. Strong refractive-index modulation is used to support the excitation of multimode resonances TE1,0, TE1,1, TE2,0, TE1,2, and TE2,1, which are excited by the first and second diffraction orders, relate asymmetrical line shapes and broad low-transmission bands, where TE is the transverse electric. Taking advantage of narrow linewidth and sharp edge line shape in the spectra of TE2, (v is the mode), a bandpass filter with form factors of 0.61 and 0.7 for long- and short-wave channels is presented to demonstrate this concept.
Zhenhua Wang, Yonggang Wu, Zihuan Xia, Renchen Liu, Gang Lv, Heyun Wu, Pinglin Tang. Multimode resonance bandpass filter with twin wideband channels[J]. Chinese Optics Letters, 2011, 9(8): 080501.
PDF全文
