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lede is dubious too, see talk |
→Principles: also dubious, see talk |
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==Principles==
{{dubious}}
[[Plane wave]]s are solutions to the homogeneous [[Helmholtz equation]], and form a basis to represent fields in the periodic media. PWE as applied to photonic crystals as described is primarily sourced
from Dr. Danner's tutorial<ref>http://vcsel.micro.uiuc.edu/~adanner/planewave.htm</ref>.
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