|
According to the ITU-T DWDM standard, the channel spacing between the two adjacent bands is 0.8 nm (100GHz) or 0.4 nm (50 GHz). [18]
The higher number of reflected bands indicate that more wavelengths can be filtered out and reduce the number of cascaded filter to be used in DWDM fiber optic communication system.
It shows the FSR is very high compared to the ITU –T DWDM standard. All the structures has FSR of more than 25 nm.
Rudin Shapiro has the highest number of reflected bands which indicate that more wavelengths can be filtered out and reduce the number of cascaded filter to be used in DWDM fiber optic communication system.
|