A novel orthogonal modulation format of D8PSK/ASK with differential bi-phase encoding and its application in a label switching optical network
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Abstract:
The principle of a novel orthogonal modulation format of differential 8-level phase-shift keying amplitude-shift keying (D8PSK/ASK) with differential bi-phase encoding (DBC) is introduced. Based on it, an optical labeling scheme, in which the payload is 100 Gbit/s D8PSK signal and the label is 10 Gbit/s DBC-ASK signal, is proposed and simulated. The results are compared with other current schemes, and the effects of transmission range, modulation extinction ratio (ER) and received power on system performance are analyzed, respectively. The results show that the spectrum efficiency and bit error rate (BER) are improved greatly, and when the modulation ER is increased to 11 dB, the balanced performance between the payload and label is achieved.
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This work has been supported by the National Basic Research Program of China (No.2010CB328300), the National Natural Science Foundation of China (Nos.61077050, 61077014 and 60932004), the Foundation of State Key Laboratory of Optical Communication Technologies and Networks (WRI) (No.2010OCTN-02), the Fundamental Research Funds for the Central Universities (Nos.2011RC0307 and 2009 RC0314), and the Natural Science Foundation of Hebei Province (No.F2010001045).
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