Harnessing a Dielectric/Plasma Photonic Crystal as an Optical Microwave Filter: Role of Defect Layers and External Magnetic Fields

被引:1
作者
Dakhlaoui, Hassen [1 ]
Belhadj, Walid [2 ]
Elabidi, Haykel [2 ]
Al-Shameri, Najla S. [1 ]
Ungan, Fatih [3 ]
Wong, Bryan M. [4 ,5 ]
机构
[1] Imam Abdulrahman Bin Faisal Univ, Basic & Appl Sci Res Ctr BASRC, Coll Sci Dammam, Phys Dept,Nanomat Technol Unit, POB 1982, Dammam 31441, Saudi Arabia
[2] Umm AL Qura Univ, Coll Sci, Phys Dept, POB 715, Mecca 24382, Saudi Arabia
[3] Sivas Cumhuriyet Univ, Fac Sci, Dept Phys, TR-58140 Sivas, Turkiye
[4] Univ Calif Riverside, Dept Chem, Mat Sci & Engn Program, Riverside, CA 92521 USA
[5] Univ Calif Riverside, Dept Phys & Astron, Riverside, CA 92521 USA
关键词
one-dimensional photonic crystal; transfer matrix method; transmittance spectrum; angle of incidence; plasma; MULTICHANNEL FILTER; BAND-GAPS; MODE;
D O I
10.3390/ma17030559
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We investigate the transmittance spectrum of a multichannel filter composed of dielectric (A) and plasma (P) materials in the microwave region within the transfer matrix formalism. Two configurations of the proposed filter are studied under the influence of an applied magnetic field: (1) a periodic structure containing (A/P)N unit cells surrounded by air and (2) the introduction of a second dielectric material (D) acting as a defect layer to produce an (AP)N/2/D/(AP)N/2 structure. Our findings reveal that in the periodic case, the number of resonant states of the transmittance increases with number N; however, the observed blue and red shifts depend on the intensity and orientation of the applied magnetic field. We present contour plots of the transmission coefficients that show the effect of the incident angle on the shifts of the photonic band gaps. Furthermore, we find that the introduction of a defect layer generates additional resonant states and merges the central resonant peak into a miniband of resonances. Moreover, we show that the number of resonant peaks and their locations can be modulated by increasing the unit cell number, N, as well as increasing the width of the inserted defect layer. Our proposed structures enable the design of novel photonic filters using magnetized plasma materials operating in the microwave region.
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页数:13
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