What effect does the height of the dielectric rods on the photonic crystal (three dimension) have on the photonic band gap? (Could height cause high displacement in the photonic band gap range)
What effect does increasing the radius of the rods in three-dimensional mode have on the band gap gap?
Thanks for sharing this discussion to me. However, my research area is one-dimensional photonic crystals. So I don't know too much about three-dimensional photonic crystals. I try to answer this question below.
For two-dimensional case (the height of the dielectric rod is infinite), you can obtain photonic band gap by calculating or simulating the band structure. As the height of the dielectric rod becomes finite, the photonic crystal actually becomes photonic crystal slab (with finite height). Therefore, the photonic crystal slab also possesses guided mode. Compared with two-dimensional photonic crystal with infinite height, the band structure of photonic crystal slab with finite height will become quite complex. You can refer the book about photonic crystal by John.
the slab thickness ( rod height) effects the mid-gap position of PBG . It has been observed that the frequency of the mid-gap increase with decreasing the slab thickness.
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