Latex tips - Latex 漫游指南

\underbrace{equation}_{\text{comment}}

image-20241106140028418

$$\underbrace{\text{This is }\LaTeX{}}_{\text{This is the comment}}$$

可以用\underbrace来注释公式中的不同部分，效果如下：

S_{\text{out}}(\omega) = \frac{1}{2} P_o \textcolor{ForestGreen}{}I_{\text{ff}} \Bigg[ & \underbrace{\cos^2 A \cdot J_0^2(B_1) \cdot e^{-\alpha L} \delta(\omega + \omega_c) }_{\text{Carrier}} + \underbrace{\sin^2 A \cdot J_1^2(B_1) \cdot e^{-\alpha L} g_B \delta(\omega + \omega_c - \omega_s)}_{\text{frequency-shifted signal, wanted}} \notag \\ &+ \sin^2 A \cdot J_1^2(B_1) \cdot e^{-\alpha L} \frac{1}{g_B} \delta(\omega + \omega_c + \omega_s) + N_{\text{SBS},c}(\omega) + N_{\text{SBS},l}(\omega) \notag \\ &+ N_{\text{SBS},u}(\omega) + \Bigg\{ \underbrace{\cos^2 A \cdot J_0^2(B_2) \cdot \delta(\omega + \omega_c) + \sin^2 A \cdot J_1^2(B_2) \cdot \delta(\omega + \omega_c - \omega_p)}_{{S_{pump, in}(\omega)}} \notag \\ & \underbrace{+\sin^2 A \cdot J_1^2(B_2) \cdot \delta(\omega + \omega_c + \omega_p)}_{{S_{pump, in}(\omega)}} \Bigg\} \times G \left( \frac{S_c}{2} (1 - e^{-2 \alpha L}) \right) \Bigg]