Gate-Tunable Graphene Optical Modulator on Fiber Tip: Design and Demonstration

被引：6

作者：

Ding, Zi-xuan ^{[1
,2
]}

Xu, Hao-tian ^{[1
,2
]}

Xiong, Yi-feng ^{[1
,2
]}

Zhou, Kang-hu ^{[1
,2
]}

Chen, Ye ^{[1
,2
]}

Lu, Yan-qing ^{[1
,2
]}

Xu, Fei ^{[1
,2
]}

机构：

[1] Nanjing Univ, Coll Engn & Appl Sci, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210023, Peoples R China

[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210023, Peoples R China

来源：

ADVANCED OPTICAL MATERIALS | 2022年 / 10卷 / 22期

基金：

中国国家自然科学基金;

关键词：

electro-optical modulator; fiber devices; field-effect transistors; graphene;

D O I：

10.1002/adom.202201724

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A fiber-end-face-integrated electrically tunable optical modulator based on graphene field-effect transistor and the fabrication technique are proposed and demonstrated. The all-fiber device features a scheme of compactness and high integration when applied to fiber optical system, as well as a low insertion loss since spatial coupling of light is avoided. A reflecting structure is used and the electro-optic modulator shows vivid modulation when gate voltage gets tuned, with maximum optical reflectance modulation depth over 1% in demonstration. To the best of the authors' knowledge, it is the first time to build an all-solid gate-control modulator directly on fiber facet. The fabrication methods introduce workflows of silicon-on-insulator processing into the optical fiber end-face micromachining domain which can be applied to more comprehensive configurations, broadening the path of fiber-end-face integrated device.

引用

页数：8

共 39 条

[1] Electrically Tunable Four-Wave-Mixing in Graphene Heterogeneous Fiber for Individual Gas Molecule Detection [J].