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Journal of Applied Sciences >

2018 , Vol. 36 >Issue 5: 748 - 755

DOI: https://doi.org/10.3969/j.issn.0255-8297.2018.05.002

Optical Fiber Sensors Technology

Graphene/Au Thin Film Coupled Microfiber All-Optical Modulator

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  • 1. National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China;
    2. Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, China

Received date: 2017-03-16

  Revised date: 2017-04-21

  Online published: 2018-09-30

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Abstract

An all-optical modulator is fabricated with sandwich structure of graphene/Au thin film coupled microfiber. The whole structure is sealed by polydimethylsiloxane (PDMS). The Au film can confine the evanescent field and enhance the interaction between evanescent field and graphene. This device exhibits strong optical polarization and saturation absorption effect, resulting in a polarization extinction ratio of up to 42.3 dB at 1 550 nm. Because the S-polarization light exhibits more intensive interaction with graphene, the modulation effect can be enhanced when pump and signal both are in S-polarization. The experimental result shows that a high modulation amplitude of 41.0 dB can be reached with a 130 mW pump light at 980 nm, whereas the 3 dB and 10 dB modulation amplitudes correspond to pump lights of 2.8 mW and 5.6 mW, respectively.

Key words： polarization; saturable absorption; Au film; optical waveguide; microfiber; graphene

Cite this article

LI Qin-you, ZHOU Ai, GUO Dong-lai . Graphene/Au Thin Film Coupled Microfiber All-Optical Modulator[J]. Journal of Applied Sciences, 2018 , 36(5) : 748 -755 . DOI: 10.3969/j.issn.0255-8297.2018.05.002

References

[1] Neto A H C. The electronic properties of graphene[J]. Physical Status Solidi, 2007, 83(10):1248-1252.
[2] Wang F, Zhang Y, Tian C, Girit C, Zettl A, Crommie M, Shen Y. Gate-variable optical transitions in graphene[J]. Science, 2008, 320(5873):206-209.
[3] Mueller T, Xia F, Avouris P. Graphene photodetectors for high-speed optical communications[J]. Nature Photonics, 2010, 4(5):297-301.
[4] Dawlaty J M, Shivaraman S, Chandrashekhar M, Rana F, Spencer M G. Measurement of ultrafast carrier dynamics in epitaxial graphene[J]. Applied Physics Letters, 2008, 92(4):042116.
[5] Bonaccorso F, Sun Z, Hasan T, Ferrari A C. Graphene photonics and optoelectronics[J]. Nature Photonics, 2010, 4(9):611-622.
[6] Bao Q, Loh K P. Graphene photonics, plasmonics, and broadband optoelectronic devices[J]. Acs Nano, 2012, 6(5):3677-3694.
[7] Koester S J, Li M. Waveguide-coupled graphene optoelectronics[J]. IEEE Journal of Selected Topics in Quantum Electronics, 2013, 20(1):84-94.
[8] Li W, Yi L, Zheng R, Hu W. Fabrication and application of a graphene polarizer with strong saturable absorption[J]. Photonics Research, 2016, 4(2):41-44.
[9] Bao Q, Zhang H, Wang B, Ni Z, Lim C, Wang Y, Tang D Y, Loh K P. Broadband graphene polarizer[J]. Nature Photonics, 2011, 5(7):411-415.
[10] Guan C, Li S, Shen Y, Yuan T. Graphene-coated surface core fiber polarizer[J]. Journal of Lightwave Technology, 2015, 33(2):349-353.
[11] He X, Zhang X, Zhang H, Xu M. Graphene covered on microfiber exhibiting polarization and polarization-dependent saturable absorption[J]. IEEE Journal of Selected Topics in Quantum Electronics, 2014, 20(1):55-61.
[12] Li W, Chen B, Meng C, Fang W, Xiao Y, Li X, Hu Z, Xu Y, Tong L M, Wang H Q, Liu W T, Bao J M, Shen Y R. Ultrafast all-optical graphene modulator[J]. Nano Letters, 2014, 14(2):955-959.
[13] Kou J, Chen J, Chen Y, Lu Y. Platform for enhanced light-graphene interaction length and miniaturizing fiber stereo devices[J]. Optica, 2014, 1(5):307-310.
[14] Dong C H, Zou C L, Ren X F, Sun F W. In-line high efficient fiber polarizer based on surface plasmon[J]. Applied Physics Letters, 2012, 100(4):4222.
[15] Ma Y, Farrell G, Semenova Y, Li B, Yuan J, Sang X, Yan B, Yu C, Guo T, Wu Q. Optical microfiber-loaded surface plasmonic TE-pass polarizer[J]. Optics & Laser Technology, 2016, 78:101-105.
[16] Mikhailov S A, Ziegler K. New electromagnetic mode in graphene[J]. Physical Review. Letters, 2007, 99(1):016803.
[17] Bao Q, Zhang H, Wang Y, Ni Z, Yan Y, Shen Z, Loh K P, Tang D. Atomic-layer graphene as a saturable absorber for ultrafast pulsed lasers[J]. Advanced Functional Materials, 2009, 19:3077-3083.
[18] Wang Z G, Chen Y F, Li P J, Hao X, Liu J, Huang R, Li Y. Flexible graphene-based electroluminescent devices[J]. Acs Nano, 2011, 5(9):7149-7154.
[19] Sheng Q W, Feng M, Xin W, Guo H, Han T, Li Y, Liu Y, Gao F, Song F, Liu Z, Tian J G. Tunable graphene saturable absorber with cross absorption modulation for mode-locking in fiber laser[J]. Applied Physics Letters, 2014, 105(4):041901.
[20] Xin W, Liu Z B, Sheng Q W, Feng M, Huang L, Wang P, Jiang W, Xing F, Liu Y, Tian J G. Flexible graphene saturable absorber on two-layer structure for tunable mode-locked soliton fiber laser[J]. Optics Express, 2014, 22(9):10239-10247.
[21] Li C, Chen J H, Yan S C, Xu F, Lu Y. A fiber laser using graphene-integrated 3-D microfiber coil[J]. IEEE Photonics Journal, 2015, 8(1):1500307.
[22] Zhang H, Haely N, Shen L, Huang C, Heweak D, Peacok A. Enhanced all-optical modulation in a graphene-coated fiber with low insertion loss[J]. Scientific Reports, 2016, 6:23512.
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