An apparatus , comprising: a first reconfigurable optical add/drop multiplexer (1 10a) - ROADM - configured to receive a first optical signal comprising a plurality of spectral components; a second ROADM configured to receive a second optical signal comprising the plurality of spectral components, wherein the plurality of spectral components together form a super-channel; a reconfigurable optical switch including: a first switch , in optical communication with the first ROADM and switchable between a first state and a second state, to transmit the first optical signal at the first state and block the first optical signal at the second state; a second switch , in optical communication with the second ROADM and switchable between the first state and the second state, to transmit the second optical signal at the first state and block the second optical signal at the second state; an output port , in optical communication with the first switch and the second switch, to transmit an output signal that is a sum of possible optical signals transmitted through the first switch and the second switch; and a first detector, operatively coupled to the first ROADM, to detect an amplitude of the super-channel of the first optical signal, in response to the amplitude of the super-channel of the first optical signal being less than a threshold value, the first switch being turned to the second state to block the first optical signal and the second switch being turned to the first state to transmit the second optical signal to the output port. a first reconfigurable optical add/drop multiplexer (1 10a) - ROADM - configured to receive a first optical signal comprising a plurality of spectral components; a second ROADM configured to receive a second optical signal comprising the plurality of spectral components, wherein the plurality of spectral components together form a super-channel; a reconfigurable optical switch including: a first switch , in optical communication with the first ROADM and switchable between a first state and a second state, to transmit the first optical signal at the first state and block the first optical signal at the second state; a second switch , in optical communication with the second ROADM and switchable between the first state and the second state, to transmit the second optical signal at the first state and block the second optical signal at the second state; a first switch , in optical communication with the first ROADM and switchable between a first state and a second state, to transmit the first optical signal at the first state and block the first optical signal at the second state; a second switch , in optical communication with the second ROADM and switchable between the first state and the second state, to transmit the second optical signal at the first state and block the second optical signal at the second state; an output port , in optical communication with the first switch and the second switch, to transmit an output signal that is a sum of possible optical signals transmitted through the first switch and the second switch; and a first detector, operatively coupled to the first ROADM, to detect an amplitude of the super-channel of the first optical signal, in response to the amplitude of the super-channel of the first optical signal being less than a threshold value, the first switch being turned to the second state to block the first optical signal and the second switch being turned to the first state to transmit the second optical signal to the output port. <EOS>