Key Laboratory of Specialty Fiber Optics and Optical Access Networks

Shanghai, China

Key Laboratory of Specialty Fiber Optics and Optical Access Networks

Shanghai, China
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Liu S.,Key Laboratory of Specialty Fiber Optics and Optical Access Networks | Liu S.,Shanghai University | Chen N.,Key Laboratory of Specialty Fiber Optics and Optical Access Networks | Li L.,Key Laboratory of Specialty Fiber Optics and Optical Access Networks | And 3 more authors.
Optical Materials | Year: 2013

This paper reported that the Ag nanowire was fabricated by electrochemical deposition in the pores of the anodized aluminum oxide template, and the gold nanoparticles were synthesized on the surface of Ag nanowire. Furthermore, the rough surface of Ag/Au core-shell nanowire was observed and analyzed by TEM and applied as the enhanced substrates for the surface-enhanced Raman scattering (SERS) measurements. The nanowires with the nanoparticles on the surface were possible to be used as the SERS substrate for the biological molecular analysis and detection. © 2012 Elsevier B.V. All rights reserved.


Su J.,Xiamen University | Dong X.,Xiamen University | Shi Z.,Key Laboratory of Specialty Fiber Optics and Optical Access Networks
Zhongguo Jiguang/Chinese Journal of Lasers | Year: 2014

A novel sensitivity enhanced fiber Bragg grating (FBG) strain sensor based on fine transmission spectrum and edge filter interrogator of a non-uniform FBG is proposed. The fine transmission spectrum changes of FBG under axial non-uniform strain and the strain response character based on spectrum changes are studied theoretically. The simulation results show that the strain sensitivity of the FBG under non-uniform strain can be enhanced to 4.6 times normal FBG. The sensor structure is designed and made experimentally to enhance the strain sensitivity by changing uniform strain into non-uniform strain. The experimental results are in good accordance with theoretical results. The FBG strain sensitivity and the range of the dynamic strain measurement ability are both enhanced in narrow linewidth laser locked edge filter interrogation system by using this new FBG sensor. Because of its compact size, the new FBG strain senor has great potential for high frequency dynamic strain monitoring.


Peng Z.-Y.,Key Laboratory of Specialty Fiber Optics and Optical Access Networks | Ren X.-F.,Key Laboratory of Specialty Fiber Optics and Optical Access Networks | Meng C.-Y.,Key Laboratory of Specialty Fiber Optics and Optical Access Networks | Li S.,Key Laboratory of Specialty Fiber Optics and Optical Access Networks
Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology | Year: 2015

Parameters of the Ultra-High-Frequency Radio Frequency IDentification (UHF RFID) tags and the mutual coupling effect have great impact on antenna gain, and a corresponding theoretical model is developed. Firstly, from the perspective of the radiation field, the tag is equivalent to dipole antenna with lumped load. Then based on the theory of dipole array, a simplified gain model of dual tag antennas with small interval is derived, and application of multiple tags is expanded simply. The simulation results show that the model is effective. Finally, the directivity and radiation efficiency are studied. The results provide a theoretical guidance for the research of intensive tags performance. ©, 2015, Science Press. All right reserved.

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