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We experimentally evaluate bit-error rate performance of polybinary-pulse-shaped QAM signals in Super-Nyquist-WDM conditions, and clarify the relationship between spectral efficiency and SNR compared with conventional Nyquist-pulse-shaped signals.
The reflection at the optical connector in the high-power range was experimentally verified using Coherent-OTDR for the first time. The result shows less reflectivity at the connecter with black paint in a higher power range.
We have successfully demonstrated the first terabit-class WDM transmission (7 × 1.12 Tb/s PDM-16QAM) over all-EDFA 400-km standard single mode fiber (SSMF) and 2 ROADMs. Q factors larger than 9.4 dB are found for all channels.
Optical network technologies from access to core for fixed and mobile broadband services are reviewed. Manageable all optical network and resource management for end-to-end QoS are also presented for advanced high-quality network services.
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