Few-Layer Graphene Integrated Tilted Fiber Grating For All-Optical Switching


Recently, the integration of two-dimensional materials with optical fibers has opened up a great opportunity to develop all-fiber signal-processing devices. Graphene is an ideal material for all-optical signal processing via thermal-optic effect because of its high electrical and thermal conductivity, as well as broadband light-matter interactions with fast responses. Herein, we report the achievement of all-optical switching with fast response by integrating few-layer graphene onto a tilted fiber Bragg grating (TFBG) inscribed in a reduced-diameter fiber. Relying on graphene's decent photothermal effect, the transmission spectrum of the TFBG could be all-optically modulated by tuning the incident pump power. The all-optical switch can consequently operate at a series of wavelengths owing to the TFBG's comb-like resonances. The reduced diameter of the graphene-integrated TFBG and the pump at its resonant wavelength promise the all-optical switch to have a fast-dynamic response of around 1 μs and an extinction ratio exceeding 13 dB. This compact device with graphene integration has the potentials to be integrated into all-fiber system to extend the functions of all-optical signal processing.

Publication DOI: https://doi.org/10.1109/JLT.2020.3036761
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
Additional Information: © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords: All-optical switch,Graphene,Optical fiber devices,Optical fibers,Optical interferometry,Optical pumping,Optical surface waves,Optical switches,few-layer graphene,reduceddiameter fiber,tilted fiber grating,Atomic and Molecular Physics, and Optics
Publication ISSN: 0733-8724
Last Modified: 14 May 2024 07:18
Date Deposited: 19 Nov 2020 08:40
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Related URLs: https://ieeexpl ... cument/9259212/ (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2021-03-01
Published Online Date: 2020-11-16
Accepted Date: 2020-11-01
Authors: Jiang, Biqiang
Hou, Yueguo
Wang, Hongyang
Gan, Xuetao
Li, Ailun
Hao, Zhen
Zhou, Kaiming (ORCID Profile 0000-0002-6011-1912)
Zhang, Lin
Zhao, Jianlin



Version: Accepted Version

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