2) Consider a uniform fibre Bragg grating (FBG) written in silica f...

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2) Consider a uniform fibre Bragg grating (FBG) written in silica fibre, of length
Lgr = 7mm, effective periodic index modulation ฮดn = 10โ€พโด, and Bragg wavelength ๐œ†B = 1550nm.
a. Calculate the value of the coupling coefficient ๐œ…, in the FBG. (in units of mโ€พยน)
b. Considering a waveguide refractive index of n = 1.4489 for the silica fibre at 1550nm, what is the grating period of the FBG? (in units of nm)
c. What is the full bandwidth ฮ”๐œ† of the FBG? (in units of nm)

3) Consider an FBG with parameters described in 2), but in this case of varying grating length, Lgr.
a. Calculate the values of ๐œ…, ฮ”๐œ†, and peak reflection, for
i. Lgr = 1mm
ii. Lgr = 4mm
iii. Lgr = 10mm
iv. Lgr = 15mm

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function calc()

%p2
Lgr = 0.007; % m
deln = 1e-4;
lamB = 1550e-9; %m
neff = 1.4489;

kap = pi*deln/lamB
Lam = lamB /2/neff
Dellam = lamB...

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