scholarly journals Mode switching using optically induced long-period gratings: a theoretical analysis

2021 ◽  
Vol 29 (10) ◽  
pp. 14601
Author(s):  
Gil M. Fernandes ◽  
Ana M. Rocha ◽  
Margarida Facão
Keyword(s):  
Theoretical Analysis ◽  
Mode Switching ◽  
Long Period ◽  
Long Period Gratings ◽  
Optically Induced

scholarly journals Experimental realization of femtosecond transverse mode conversion using optically induced transient long-period gratings

2014 ◽  
Vol 22 (21) ◽  
pp. 24951 ◽  
Author(s):  
Tim Hellwig ◽  
Martin Schnack ◽  
Till Walbaum ◽  
Sven Dobner ◽  
Carsten Fallnich
Keyword(s):  
Mode Conversion ◽  
Transverse Mode ◽  
Experimental Realization ◽  
Long Period ◽  
Long Period Gratings ◽  
Optically Induced

Long Period Gratings in Multimode Fiber Fabricated with High-Energy Ion Implantation

2003 ◽  
Vol 22 (4) ◽  
pp. 225-237
Author(s):  
K. J. GRANT ◽  
ROBERTS A. ◽  
D. N. JAMIESON ◽  
B. ROUT ◽  
C. CHER
Keyword(s):  
Ion Implantation ◽  
High Energy ◽  
Multimode Fiber ◽  
Long Period ◽  
Long Period Gratings

scholarly journals UV Inscription and Pressure Induced Long-Period Gratings through 3D Printed Amplitude Masks

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 1977
Author(s):  
Ricardo Oliveira ◽  
Liliana M. Sousa ◽  
Ana M. Rocha ◽  
Rogério Nogueira ◽  
Lúcia Bilro
Keyword(s):  
State Of The Art ◽  
Low Cost ◽  
Resonance Wavelength ◽  
Complex Structures ◽  
Pressing Method ◽  
Long Period ◽  
Long Period Gratings ◽  
3D Printed ◽  
Mechanical Pressing ◽  
First Time

In this work, we demonstrate for the first time the capability to inscribe long-period gratings (LPGs) with UV radiation using simple and low cost amplitude masks fabricated with a consumer grade 3D printer. The spectrum obtained for a grating with 690 µm period and 38 mm length presented good quality, showing sharp resonances (i.e., 3 dB bandwidth < 3 nm), low out-of-band loss (~0.2 dB), and dip losses up to 18 dB. Furthermore, the capability to select the resonance wavelength has been demonstrated using different amplitude mask periods. The customization of the masks makes it possible to fabricate gratings with complex structures. Additionally, the simplicity in 3D printing an amplitude mask solves the problem of the lack of amplitude masks on the market and avoids the use of high resolution motorized stages, as is the case of the point-by-point technique. Finally, the 3D printed masks were also used to induce LPGs using the mechanical pressing method. Due to the better resolution of these masks compared to ones described on the state of the art, we were able to induce gratings with higher quality, such as low out-of-band loss (0.6 dB), reduced spectral ripples, and narrow bandwidths (~3 nm).

Fabrication and characterization of arc-induced long period gratings in optical fibers with micro-channels

2020 ◽  
Author(s):  
Anubhav Srivastava ◽  
Flavio Esposito ◽  
Joao M. B. Pereira ◽  
Stefania Campopiano ◽  
Agostino Iadicicco
Keyword(s):  
Optical Fibers ◽  
Long Period ◽  
Long Period Gratings ◽  
Micro Channels ◽  
Fabrication And Characterization

Effects of hydrogen molecule diffusion on LP0m mode coupling of long-period gratings

1999 ◽  
Vol 259 (1-3) ◽  
pp. 156-164 ◽  
Author(s):  
J.N. Jang ◽  
H.G. Kim ◽  
S.G. Shin ◽  
M.S. Kim ◽  
S.B. Lee ◽  
...  
Keyword(s):  
Mode Coupling ◽  
Hydrogen Molecule ◽  
Long Period ◽  
Long Period Gratings
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