scholarly journals Spectral response of Bragg gratings in multimode polymer waveguides

2017 ◽  
Vol 56 (34) ◽  
pp. 9573 ◽  
Author(s):  
Aditya Bhuvaneshwaran ◽  
Stanislav Sherman ◽  
Hans Zappe
Keyword(s):  
Spectral Response ◽  
Bragg Gratings ◽  
Polymer Waveguides

Numerical Analysis of Thermal Dependence of the Spectral Response of Polymer Optical Fiber Bragg Gratings

2016 ◽  
Vol 12 (1) ◽  
pp. 85-95 ◽  
Author(s):  
Hisham Hisham
Keyword(s):  
Optical Fiber ◽  
High Stability ◽  
Spectral Response ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Bragg Reflector ◽  
Polymer Optical Fiber ◽  
Thermal Dependence ◽  
Silica Optical Fiber ◽  
Index Modulation

The thermal dependence of the spectral response (i.e. transmission, reflection and time delay ( r) responses) of uniform polymer optical fiber (POF) Bragg gratings has been investigated. In addition to the temperature dependence, the effects of grating strength (kLg) and fiber index modulation ( n) have been investigated. Besides high capability of tunable wavelength due to the unique large and negative thermo-optic coefficient of POF, the spectral response for POF Bragg gratings show high stability and larger spectrum bandwidth with temperature variation compare with the silica optical fiber (SOF) Bragg gratings, especially with the increase of the kLg value. It was found that by increasing kLg, the peak reflectance value increases and the bandwidth of the Bragg reflector become narrower. Also it’s shown by increasing the kLg value, r deceasing significantly and reach its minimum value at the designed wavelength ( B). Furthermore, the r for POF Bragg gratings is less than that for SOF Bragg gratings at the same value of kLg. Also it’s found that the peak reflectivity value increases to around 60% when the n value increases from 1*10-4 to 5*10-4.

Enhanced spectral response of π-phase shifted fiber Bragg gratings in closed-loop configuration

2015 ◽  
Vol 40 (9) ◽  
pp. 2124 ◽  
Author(s):  
P. Malara ◽  
C. E. Campanella ◽  
F. De Leonardis ◽  
A. Giorgini ◽  
S. Avino ◽  
...  
Keyword(s):  
Closed Loop ◽  
Spectral Response ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings

Apodisation of the spectral response of fibre Bragg gratings using a phase mask with variable diffraction efficiency

1995 ◽  
Vol 31 (3) ◽  
pp. 222-223 ◽  
Author(s):  
J. Albert ◽  
L.E. Erickson ◽  
D.C. Johnson ◽  
B. Malo ◽  
K.O. Hill ◽  
...  
Keyword(s):  
Diffraction Efficiency ◽  
Spectral Response ◽  
Bragg Gratings ◽  
Phase Mask ◽  
Fibre Bragg Gratings

Planar concave grating wavelength demultiplexers with flattened spectral response based on SU-8 polymer waveguides

2016 ◽  
Vol 55 (3) ◽  
pp. 037104 ◽  
Author(s):  
Guomin Jiang ◽  
Sarfaraz Baig ◽  
Hui Lu ◽  
Kai Shen ◽  
Michael R. Wang
Keyword(s):  
Spectral Response ◽  
Polymer Waveguides ◽  
Planar Concave Grating ◽  
Concave Grating
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