Label swapping and packet transmission of DPSK-labeled PPM signal in optical label switching |
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Authors: | Yan Shi Qi Zhang Chongxiu Yu Xiangjun Xin Cang Jin Rui Zhou Institute of Information Photonics Optical Communications Beijing University of Posts Telecommunications Beijing China |
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Affiliation: | Yan Shi,Qi Zhang,Chongxiu Yu,Xiangjun Xin,Cang Jin,and Rui Zhou Institute of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876,China |
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Abstract: | A label swapping scheme of an optical labeled signal with differential phase shift keying(DPSK) for label at 2.5 Gb/s and pulse position modulation(PPM) for payload at 40 Gb/s is demonstrated by simulation.Power penalties of ~1.8 and ~0.8 dB are achieved for both the payload and label over 80-km single mode fiber(SMF) transmission.This labeling scheme allows the use of four-wave mixing(FWM) in semiconductor optical amplifier(SOA) to perform label erasure,with advantages of transparence for bit rate,high processing rate,simple architecture,and low cost.Label swapping is demonstrated with appropriate penalties of-3.5 and 0.8 dB for PPM payload and new DPSK label,respectively.To further prove the effectiveness of the proposed scheme,label swapping in the case of using 10-Gb/s DPSK label is also investigated with the power penalties of 6 and 2 dB for PPM payload and new DPSK label. |
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