Demonstration of optical drop-and-insert for accessing 2.24 Gbit/s optical transmission systems directly at the 140 Mbit/s level

Optical drop-and-insert of 140 Mbit/s channels is demonstrated on a 2.24 Gbit/s bit-interleaved transmission system. Individual channels can be accessed optically, and synchronisation of the local station is carried out without the need for high speed clock extraction.<
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