A mid-infrared tunable filter in a semiconductor-dielectric photonic crystal containing doped semiconductor defect |
| |
Authors: | Hui-Chuan Hung Shoou-Jinn Chang |
| |
Institution: | a Institute of Microelectronics and Department of Electrical Engineering, Center for Micro/Nano Science and Technology, and Advance Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, Taiwanb Institute of Electro-Optical Science and Technology, National Taiwan Normal University, Taipei 116, Taiwan |
| |
Abstract: | In this work, we theoretically analyze tunable filtering properties in a semiconductor-dielectric photonic crystal (SDPC) containing doped semiconductor defect in the mid-infrared frequency region. We consider two possible configurations of filter structures, the symmetric and asymmetric ones. With a defect of the doped n-type semiconductor, n-Si, the resonant transmission peak can be tuned by varying the doping concentration, that is, the peak wavelength will be shifted to the position of lower wavelength for both structures. Additionally, by increasing the defect thickness, it is also possible to have a filter with multiple resonant peaks, leading to a multichannel filter. The results provide another type of tunable filter in the defective SDPC that could be of technical use for semiconductor applications in optical electronics. |
| |
Keywords: | A Semiconductors A Photonic crystals D Wave properties |
本文献已被 ScienceDirect 等数据库收录! |
|