Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04J
MULTIPLEX COMMUNICATION
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H04J14/02
Wavelength-division multiplex systems
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H04J14/0201
Add-and-drop multiplexing
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H04J14/0202
Arrangements therefor
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H04J14/021
Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]
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H04J14/02122
Colourless, directionless or contentionless [CDC] arrangements
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