Figure 4:

3 dB bandwidth pdfs of Monte Carlo samples and combined gPC model at given ${\stackrel{\to }{g}}_{0}$ in case A: (A) ${\stackrel{\to }{g}}_{0}=\left(0.2915,\text{\hspace{0.17em}}0.3046,\text{\hspace{0.17em}}0.3096,\text{\hspace{0.17em}}0.3020,\text{\hspace{0.17em}}0.3050,\text{\hspace{0.17em}}0.3028\right)$ μm and (B) ${\stackrel{\to }{g}}_{0}=\left(0.295,\text{\hspace{0.17em}}0.305,\text{\hspace{0.17em}}0.3,\text{\hspace{0.17em}}0.305,\text{\hspace{0.17em}}0.3,\text{\hspace{0.17em}}0.295\right)$ μm.