D-shaped long period fiber gratings with different spectral responses
We demonstrate two arc-induced long period fiber gratings (LPFGs) fabricated on the D-shaped fibers with the same structural parameter, which have a single dip and two resonance dips,
Arc-Induced Long-Period Fiber Gratings at INESC TEC. Part I
In this work, we reviewed the most important achievements of INESC TEC related to the fabrication of long-period fiber gratings using the electric arc technique.
Review of Helical Long-Period Fiber Gratings
In this paper, comprehensive remarks are given that focus on the main fabrications and wide applications of helical long-period fiber gratings (HLPGs). Firstly, the techniques of fabricating
Fabrication and Characteristics of Long-Period Gratings in the D
Abstract: We demonstrated the fabrication of long-period fiber gratings (LPFGs) inscribed in the D-shaped double-cladding fiber (DCF) using CO 2 laser. The phase-matching curves of D-shaped DCF
Long-period fiber grating
Long period grating has a wide variety of applications, including band-rejection filters, gain flattening filter and sensors. Various gratings with complex structures have been designed: gratings combining
Long Period Fibre Gratings
The strain response of a long-period fibre grating arise due to the physical elongation of the fibre, changing the grating pitch and the effective refractive index of the core and cladding due to the
Long-Period Gratings Based on Photonics Crystal Fibers and
A long-period fiber grating (LPG) is a one dimension (1D) periodic structure, and is formed by introducing periodic modulation of the refractive index along an optical fiber.
Temperature Stability and Spectral Tuning of Long Period Fiber
Long period fiber gratings (LPFGs) were fabricated in a standard single mode fiber (SMF-28e) through femtosecond (fs) laser direct writing. LPFGs with longer and shorter periods were fabricated, which
Structure-Modulated Long-Period Fiber Gratings: A Review
This review synthesizes and categorizes a class of novel long-period fiber gratings (LPFGs) engineered through the modification of the external cladding morphology or geometry. We
Comparative Analysis of Mechanically Induced Long Period Gratings
In this paper, we propose a new technique to fabricate long period gratings (LPGs) by mechanically applying a force to an optical fiber enclosed in a low-cost periodic 3-D printed polymeric...
Long period gratings inscribed with electric arc in nanostructured
In this work, for the first time, we demonstrate long period gratings (LPG) in nanostructured optical fibers and their response to gamma radiation.
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