Fiber Bragg Gratings A fiber Bragg Grating is written in a fiber (n=1.5) with a strength = 2em and length = 2 cm at 2=1550nm. a) What is the bandwidth of the grating in nm? b) What is the Reflectivity (in %) and Transmission (in dB)? c) If this grating were written in birefringent fiber where the difference in refractive index for the two polarizations, An = 10, what is the separation in grating wavelengths for the two polarizations? d) Will this grating be any good for filtering unpolarized light?