All-optical amplitude-shift keying and differential phase-shift keying to differential phase amplitude-shift keying format combination in highly nonlinear fiber
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Wu, Lin
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Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Dept Elect, Beijing 100871, Peoples R ChinaPeking Univ, State Key Lab Adv Opt Commun Syst & Networks, Dept Elect, Beijing 100871, Peoples R China
Wu, Lin
[1
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Zhang, Dechao
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Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Dept Elect, Beijing 100871, Peoples R ChinaPeking Univ, State Key Lab Adv Opt Commun Syst & Networks, Dept Elect, Beijing 100871, Peoples R China
Zhang, Dechao
[1
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Zhang, Fan
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Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Dept Elect, Beijing 100871, Peoples R ChinaPeking Univ, State Key Lab Adv Opt Commun Syst & Networks, Dept Elect, Beijing 100871, Peoples R China
Zhang, Fan
[1
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Chen, Zhangyuan
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Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Dept Elect, Beijing 100871, Peoples R ChinaPeking Univ, State Key Lab Adv Opt Commun Syst & Networks, Dept Elect, Beijing 100871, Peoples R China
Chen, Zhangyuan
[1
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Xu, Anshi
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Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Dept Elect, Beijing 100871, Peoples R ChinaPeking Univ, State Key Lab Adv Opt Commun Syst & Networks, Dept Elect, Beijing 100871, Peoples R China
Xu, Anshi
[1
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机构:
[1] Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Dept Elect, Beijing 100871, Peoples R China
We propose an all-optical modulation formats combination scheme that merges an amplitude-shift keying (ASK) signal and a differential phase-shift keying (DPSK) signal into a single differential phase amplitude-shift keying (DPASK) signal based on parametric amplification in a highly nonlinear fiber. By optimizing the power of the ASK channel, formats combination of ASK and DPSK to DPASK signal is successfully demonstrated by computational simulation. The demodulation process of the generated DPASK pulses is investigated and the relationship between optical signal-to-noise ratio (OSNR) penalty and the input ASK power is presented. The proposed scheme may be used for increasing spectral efficiency and all-optical logic device.