Ultrabroadband single-mode long-period fiber gratings using high-order cladding modes

2004 ◽  
Vol 96 (11) ◽  
pp. 5987-5991 ◽  
Author(s):  
Vinayak Dangui ◽  
Michel J. F. Digonnet ◽  
Gordon S. Kino
Keyword(s):  
Single Mode ◽  
High Order ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Fiber Gratings

CO 2 -laser induced long-period fiber gratings in nano-engineered bend insensitive single-mode fiber

2012 ◽  
Author(s):  
Yunjiang Rao ◽  
Wenhua Wang ◽  
Zinan Wang ◽  
Kin Seng Chiang ◽  
Yuan Gong
Keyword(s):  
Single Mode ◽  
Single Mode Fiber ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Fiber Gratings

scholarly journals Sensing and Demodulation of Special Long-Period Fiber Gratings Induced by ScanningCO2Laser Pulses

2012 ◽  
Vol 2012 ◽  
pp. 1-17 ◽  
Author(s):  
Tao Zhu ◽  
Leilei Shi ◽  
Min Liu ◽  
Wei Huang
Keyword(s):  
Single Mode ◽  
Laser Pulses ◽  
Single Mode Fiber ◽  
Wavelength Shift ◽  
Refractive Index Sensor ◽  
Fiber Gratings ◽  
Long Period ◽  
Investigation Methods ◽  
Long Period Fiber Gratings ◽  
Sensor Strain

A review of long-period fiber gratings (LPFGs) with special structures induced by scanning CO2laser pulses in single mode fiber (SMF) is presented in this paper. In the first part, the special structures and fabrication methods of LPFGs are demonstrated in detail. Next, the special LPFG-based sensors are demonstrated, such as refractive index sensor, strain sensor with temperature compensation, and torsion sensor without temperature crosstalking. Finally, several investigation methods including intensity, wavelength shift, and fiber ring laser demodulation are discussed.

scholarly journals Tunable Optical Filter Based on Mechanically Induced Cascaded Long Period Optical Fiber Grating

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Sunita P. Ugale ◽  
Vivekanand Mishra
Keyword(s):  
Optical Fiber ◽  
Optical Filter ◽  
Single Mode ◽  
Fiber Grating ◽  
Fiber Structure ◽  
Fiber Gratings ◽  
Long Period ◽  
Tunable Optical Filter ◽  
Long Period Fiber Gratings ◽  
Optical Fiber Gratings

We have proposed and demonstrated experimentally a novel and simple tunable optical filter based on mechanically induced and cascaded long period optical fiber gratings. In this filter variable FWHM and center wavelength is provided by cascading long period and ultralong period optical fiber gratings with different periods in a novel fiber structure. We report here for the first time to our knowledge the characterization of mechanically induced long period fiber gratings with periods up to several millimeters in novel multimode-single-mode-multimode fiber structure. We have obtained maximum loss peak of around 20 dB.

Simultaneous strain and temperature measurement by cascading few-mode fiber and single-mode fiber long-period fiber gratings

2014 ◽  
Vol 53 (30) ◽  
pp. 7045 ◽  
Author(s):  
Li Wang ◽  
Weigang Zhang ◽  
Biao Wang ◽  
Lei Chen ◽  
Zhiyong Bai ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Fiber Gratings

Fabrication and characterization of helical long-period fiber gratings in single-mode fibers

Optik ◽  
2018 ◽  
Vol 158 ◽  
pp. 28-32 ◽  
Author(s):  
Xingpeng Wang ◽  
Dongdong Wang ◽  
Qi Wang ◽  
Lunlun Xian ◽  
Li Li
Keyword(s):  
Single Mode ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Fiber Gratings ◽  
Fabrication And Characterization
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