Code-adaptive transmission accounting for filtering effects in EON

Terabit/s Time-Frequency-Packing (TFP) superchannel transmission based on code-adaptation is demonstrated for elastic optical networks. Code is set to achieve error free transmission accounting for physical layer impairments including filtering effects. High spectral-efficient transmission (e.g., 6.6 b/s/Hz with low-order format polarization multiplexing quadrature phase shift keying —PM-QPSK) is achieved in an elastic optical network (EON) experimental testbed including fiber transmission and filters. Monitoring of the super-channel is also enabled to reveal possible signal degradations. In case, hitless code adaption is performed to re-act to the degradation without the need of any re-routing.