Equation Icon  S (Ω ) [S (Ω)] SF11 = --𝒳1𝒳1--- + S ℱℱ(Ω ) + 2Re -𝒳1ℱ----- , |χexffx(Ω )|2 [ χexffx(Ω )] F S 𝒳2𝒳2(Ω ) S𝒳2ℱ (Ω) S22 = --eff----2 + S ℱℱ(Ω ) + 2Re --eff----- , |χxx(Ω )| [ χxx(Ω ) ] F F∗ S-𝒳1𝒳2(Ω-) S𝒳1ℱ-(Ω)- S-∗𝒳2ℱ(Ω)- S 12 = S 21 = |χeff(Ω )|2 + S ℱℱ(Ω ) + χeff(Ω) + χeff∗(Ω ) , (263 ) xx xx xx