For instance , choosing right and left circular polarizations as basis functions simplifies the solution of problems involving circular birefringence ( optical activity ) or circular dichroism .
Moreover , one can use as basis functions any pair of orthogonal polarization states , not just linear polarizations .
Choosing right and left circular polarizations as basis functions simplifies the solution of problems involving circular birefringence ( optical activity ) or circular dichroism .
Moreover , one can use as basis functions any pair of orthogonal polarization states , not just linear polarizations .