An Improved Configuration for Radio over Fiber Transmission with Remote Local-Oscillator Delivery by Using Two Dual-Mach-Zehnder Modulators in Parallel. - Ming-Tuo Zhou; Awnashilal B. Sharma; Jian-Guo Zhang; Forhadul Parvez (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003)