Temperature-insensitive long-period fiber gratings written in P2Os co-doped GeO2-SiO2 core optical fibers

1999 ◽  
Author(s):  
T. Enomoto ◽  
M. Harumoto ◽  
M. Shigehara ◽  
S. Ishikawa ◽  
H. Kanamori
Keyword(s):  
Optical Fibers ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Fiber Gratings ◽  
Co Doped

scholarly journals Emergence of self-organized long-period fiber gratings in supercontinuum-generating optical fibers

2009 ◽  
Vol 34 (5) ◽  
pp. 668 ◽  
Author(s):  
Haohua Tu ◽  
Xing Liang ◽  
Daniel L. Marks ◽  
Stephen A. Boppart
Keyword(s):  
Optical Fibers ◽  
Fiber Gratings ◽  
Long Period ◽  
Self Organized ◽  
Long Period Fiber Gratings

Towards tuning of thermal sensitivity of the long period fiber gratings using a liquid crystal layer

2010 ◽  
Vol 58 (4) ◽  
pp. 503-508 ◽  
Author(s):  
A. Czapla ◽  
W. Bock ◽  
P. Mikulic ◽  
T. Woliński
Keyword(s):  
Liquid Crystal ◽  
High Efficiency ◽  
Thermal Sensitivity ◽  
Crystal Layer ◽  
Liquid Crystal Layer ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Fiber Gratings ◽  
Co Doped ◽  
Thermal Tuning

Towards tuning of thermal sensitivity of the long period fiber gratings using a liquid crystal layerA high-efficiency thermal tuning filter based on a long-period fiber grating (LPFG) combined with a low-birefringence liquid crystal (LB LC) cladding layer is presented. Two types of LPFGs were studied and compared: the LPFGs based on a standard telecommunication fiber produced by an electric arc technique, and the LPFGs based on a boron co-doped fiber written by a UV technique. Both types of LPFGs when enhanced with an external LB LC layer exhibit two different temperature sensitivities, which depend on the temperature range of operation. For the LPFGs based on standard telecommunication fiber we can conclude that the presence of the LB LC cladding increases the thermal tuning efficiency by more than one order of magnitude over the value for the LPFGs in air. In the case of the LPFGs based on the boron co-doped fiber we discovered it is possible to obtain either a temperature-independent attenuation band or the attenuation bands with high temperature sensitivities, just by careful choice of the order of the cladding mode and the operating wavelength.

Temperature sensing through long period fiber gratings mechanically induced on tapered optical fibers

2017 ◽  
Vol 56 (19) ◽  
pp. 5526 ◽  
Author(s):  
María Guadalupe Pulido-Navarro ◽  
Ponciano Jorge Escamilla-Ambrosio ◽  
Sigifredo Marrujo-García ◽  
José Alfredo Álvarez-Chávez ◽  
Fernando Martínez-Piñón
Keyword(s):  
Optical Fibers ◽  
Temperature Sensing ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Fiber Gratings

scholarly journals Recent Progress in Fabrications and Applications of Heating-Induced Long Period Fiber Gratings

Sensors ◽  
2019 ◽  
Vol 19 (20) ◽  
pp. 4473 ◽  
Author(s):  
Fu ◽  
Wang ◽  
Liu ◽  
Bai ◽  
Liao ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Recent Progress ◽  
Arc Discharge ◽  
Fiber Gratings ◽  
Biochemical Sensors ◽  
Long Period ◽  
Photonic Bandgap Fibers ◽  
Different Types ◽  
Long Period Fiber Gratings ◽  
Crystal Fibers

This paper presents a review of our work concerning the recent progress in fabrications and applications of heating-induced long period fiber gratings (LPFGs). Firstly, three kinds of heating fabrication techniques based on CO2 laser, hydrogen–oxygen flame and arc discharge are demonstrated to fabricate LPFGs, i.e., standard LPFGs (SLPFGs) and helical LPFGs (HLPFGs), in different types of optical fibers such as conventional fibers, photonic crystal fibers, and photonic bandgap fibers. Secondly, the all-fiber orbital angular momentum (OAM) mode converters based on heating-induced SLPFGs and HLPFGs in different types of fibers are studied to increase the transmission capacity. Finally, the heating-induced SLPFGs and HLPFGs are investigated to develop various LPFG-based strain, pressure, torsion and biochemical sensors.

scholarly journals Resonances in coated long period fiber gratings and cladding removed multimode optical fibers: a comparative study

2010 ◽  
Vol 18 (19) ◽  
pp. 20183 ◽  
Author(s):  
Ignacio Del Villar ◽  
Carlos R. Zamarreño ◽  
Miguel Hernaez ◽  
Francisco J. Arregui ◽  
Ignacio R. Matias
Keyword(s):  
Comparative Study ◽  
Optical Fibers ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Fiber Gratings
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