susovan0010
Junior Member level 2
Using dispersion plot (ω Vs K), we can understand the nature of guided modes, present within the photonic band-gap. The photonic band-gap (PBG) appears since different discrete values of ω present at same K value.
How can I understand the phenomena, if at different K values there exist same value of ω, within PBG? for example, if the dispersion plot becomes parallel to the K axis at ω=ω0, a single frequency exist for all K values. How the frequency response should look like? Will there be single narrow spike at ω=ω0?
How can I understand the phenomena, if at different K values there exist same value of ω, within PBG? for example, if the dispersion plot becomes parallel to the K axis at ω=ω0, a single frequency exist for all K values. How the frequency response should look like? Will there be single narrow spike at ω=ω0?