<s>
Rigorous	B-Algorithm
coupled-wave	I-Algorithm
analysis	I-Algorithm
(	O
RCWA	O
)	O
is	O
a	O
semi-analytical	O
method	O
in	O
computational	O
electromagnetics	O
that	O
is	O
most	O
typically	O
applied	O
to	O
solve	O
scattering	O
from	O
periodic	O
dielectric	O
structures	O
.	O
</s>
