Post-Treatment Techniques for Enhancing Mode-Coupling in Long Period Fiber Gratings Induced by CO2 Laser
Citation
XU, Xizhen; TANG, Jian; ZHAO, Jing; YANG, Kaiming; FU, Cailing; WANG, Qiao; LIU, Shen; LIAO, Changrui; LIAN, Jiarong; and WANG, Yiping. (2015). Post-Treatment Techniques for Enhancing Mode-Coupling in Long Period Fiber Gratings Induced by CO2 Laser. Photonic Sensors, 5(4), 339–344. https://doi.org/10.1007/s13320-015-0277-5
Keywords
- CO2 laser-induced LPFGs
- Mode-coupling efficiency
- Post-treatment techniques
- Tensile strain (as a post-treatment)
- Rising temperature (as a post-treatment)
- Resonant attenuation
- Transmission spectrum
- Polarization dependence
- Periodic grooves
- Asymmetric LPFG
- Fundamental mode
- Cladding mode
- Microbends
- Refractive index perturbation
- Photoelastic effect
- Thermo-optic effect
- Gain equalization of erbium-doped fiber amplifiers (EDFAs)
Brief
This article demonstrates that applying tensile strain or rising the temperature can enhance the mode-coupling efficiency of CO2-laser-induced long period fiber gratings (LPFGs) with periodic grooves.
Summary
This article demonstrates that the mode-coupling efficiency of CO2-laser-induced long period fiber gratings (LPFGs) with periodic grooves can be enhanced after fabrication by applying tensile strain or rising the temperature. These post-treatment techniques can lead to LPFG-based filters with extremely large attenuation and allow for tailoring the transmission spectrum of the LPFG.
Origin: https://sci.bban.top/pdf/10.1007/s13320-015-0277-5.pdf#