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Design and simulation of the optical amplitude-shift keying modulator using Fabry–Perot resonator coupled with graphene at near-infrared frequencies
Journal of Nanophotonics ( IF 1.5 ) Pub Date : 2021-06-01 , DOI: 10.1117/1.jnp.15.026006
Mohammad Mahdi Ghods 1 , Majid Afsahi 1
Affiliation  

An optical amplitude modulator operating at near-infrared frequencies is presented. The proposed modulator structure consists of a Fabry–Perot (FP) cavity coupled with graphene located in the middle of two dielectric Bragg mirrors. Graphene’s presence as an active material with adjustable optical conductivity, as well as its effective interaction with powerful standing waves confined in the cavity, enables spectral tuning of the transmission spectrum. Since the resonator has a high quality factor, a small resonance frequency shift due to graphene Fermi energy change results in a huge change of the input light transmission value of the resonator, which makes it possible to achieve high modulation depth (MD). The results demonstrate that the proposed optical modulator has insertion loss lower than 0.1 and MD larger than 90%. It is believed that our study may be useful for optical wireless communication acting at near-infrared region.

中文翻译:

使用法布里-珀罗谐振器与石墨烯在近红外频率耦合的光学幅移键控调制器的设计和仿真

介绍了一种在近红外频率下工作的光学调幅器。所提出的调制器结构由与位于两个介电布拉格反射镜中间的石墨烯耦合的法布里-珀罗 (FP) 腔组成。石墨烯作为一种具有可调节光导率的活性材料的存在,以及它与限制在腔内的强大驻波的有效相互作用,使得透射光谱的光谱调谐成为可能。由于谐振器具有较高的品质因数,石墨烯费米能量变化引起的很小的谐振频移导致谐振器的输入光透射值发生巨大变化,从而可以实现高调制深度(MD)。结果表明,所提出的光调制器的插入损耗低于 0.1,MD 大于 90%。
更新日期:2021-06-05
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