The second row shows the corresponding dispersion relations between [ ˆβ1, β2].. From the third row to the last, the magnetic field intensities at both ˆβ1 and β2 are shown in 3D surf pl
Trang 1λhWG,1
λhWG,2
0.8
1
1.2
1.4
0.8 1 1.2 1.4
0.8 1 1.2 1.4
||H2(β−1)|| 2
||H2(β^1)|| 2
||H2(β−2)|| 2
||H1(β^1)|| 2
Figure 5.6: β2 = 2 The figures in the columns from left to right each represent the case: (left)initial configuration, with band width Jh= 0.0036 ( ˆβ1= 1.9367); (middle) optimal configuration when only cladding is optimized, with band width 0.0307 ( ˆβ1 = 1.9385); (right) optimal configuration when both cladding and core are optimized, with band width Jh = 0.1113 ( ˆβ1 = 1.7807) The first row illustrates the PCF cross-sections The second row shows the corresponding dispersion relations between [ ˆβ1, β2] From the third row to the last, the magnetic field intensities at both ˆβ1 and β2 are shown in 3D surf plots
130
Trang 2λhWG,1
λhWG,2
0.16
0.18
0.2
0.12
0.14
0.16 0.18 0.2
0.12 0.14
0.16 0.18 0.2
0.12 0.14
||H2(β−1)|| 2
||H2(β^1)||2
||H2(β−2)|| 2
||H1(β^1)|| 2
Figure 5.7: β2 = 0.8 The figures in the columns from left to right each repre-sent the case: (left)initial configuration, with band width Jh = 0.014 ( ˆβ1 = 0.79); (middle) optimal configuration when only cladding is optimized, with band width
Jh = 0.074 ( ˆβ1 = 0.74); (right) optimal configuration when both cladding and core are optimized, with band width Jh = 0.1 ( ˆβ1 = 0.72) The first row illus-trates the PCF cross-sections The second row shows the corresponding disper-sion relations between [ ˆβ1, β2] From the third row to the last, the magnetic field intensities at both ˆβ1 and β2 are shown in 3D surf plots
131