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Regular | Open Access

Post-Treatment Techniques for Enhancing Mode-Coupling in Long Period Fiber Gratings Induced by CO2 Laser

Xizhen XU, Jian TANG, Jing ZHAO, Kaiming YANG, Cailing FU, Qiao WANG, Shen LIU, Changrui LIAO, Jiarong LIAN, Yiping WANG ( )
Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, 518060, China
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Abstract

Two promising post-treatment techniques, i.e. applying tensile strain and rising temperature, are demonstrated to enhance the mode-coupling efficiency of the CO2-laser-induced long period fiber gratings (LPFGs) with periodic grooves. Such two post-treatment techniques can be used to enhance the resonant attenuation of the grating to achieve a LPFG-based filter with an extremely large attenuation and to tailor the transmission spectrum of the CO2-laser-induced LPFG after grating fabrication.

Keywords

Long period fiber gratingsfiber Bragg gratingsoptical fiber sensortemperaturetensile strainoptical fiber device

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Photonic Sensors
Volume 5 Issue 4,
December 2015
Pages 339-344
DOI: 10.1007/s13320-015-0277-5

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Cite this article:
XU X, TANG J, ZHAO J, et al. Post-Treatment Techniques for Enhancing Mode-Coupling in Long Period Fiber Gratings Induced by CO2 Laser. Photonic Sensors, 2015, 5(4): 339-344. https://doi.org/10.1007/s13320-015-0277-5

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Received: 31 August 2015
Revised: 10 September 2015
Published: 21 October 2015
© The Author(s) 2015.

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