KMS Chongqing Institute of Green and Intelligent Technology, CAS
| The all-optical modulator in dielectric-loaded waveguide with graphene-silicon heterojunction structure | |
Sun,Feiying1; Xia,Liangping1,2; Nie,Changbin1; Shen,Jun1 ; Zou,Yixuan1; Cheng,Guiyu3; Wu,Hao3; Zhang,Yong3; Wei,Dongshan1; Yin,Shaoyun1
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| 2018-02-12 | |
| 摘要 | Abstract All-optical modulators based on graphene show great promise for on-chip optical interconnects. However, the modulation performance of all-optical modulators is usually based on the interaction between graphene and the fiber, limiting their potential in high integration. Based on this point, an all-optical modulator in a dielectric-loaded waveguide (DLW) with a graphene-silicon heterojunction structure (GSH) is proposed. The DLW raises the waveguide mode, which provides a strong light–graphene interaction. Sufficient tuning of the graphene Fermi energy beyond the Pauli blocking effect is obtained with the presented GSH structure. Under the modulation light with a wavelength of 532 nm and a power of 60 mW, a modulation efficiency of 0.0275 dB μm?1 is achieved for light with a communication wavelength of 1.55 μm in the experiment. This modulator has the advantage of having a compact footprint, which may make it a candidate for achieving a highly integrated all-optical modulator. |
| 关键词 | all-optical modulator waveguide graphene heterojunction |
| DOI | 10.1088/1361-6528/aaa8be |
| 发表期刊 | Nanotechnology
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| ISSN | 0957-4484 |
| 卷号 | 29期号:13 |
| WOS记录号 | IOP:0957-4484-29-13-aaa8be |
| 语种 | 英语 |
