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<p/> <p>We propose and demonstrate a wavelength- and time-selective reconfigurable optical add/drop multiplexer (ROADM) using time-frequency domain processing. The proposed ROADM is realized by allocating wavelength channels and time slots to corresponding 2D spatial channels on a MEMS optical switch. Experimental results show the wavelength- and time-selective drop operation for a signal with equivalent 3.2&#8201;Tb/s (0.64&#8201;<inline-formula> <graphic file="1687-6180-2010-807521-i1.gif"/></inline-formula> channels), and the reconfigurability by the switching operation of the MEMS optical switch.</p>