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Transmission and full-band coherent detection of polarization-multiplexed all-optical Nyquist signals generated by Sinc-shaped Nyquist pulses.

Zhang J, Yu J, Chi N - Sci Rep (2015)

Bottom Line: All optical method is considered as a promising technique for high symbol rate Nyquist signal generation, which has attracted a lot of research interests for high spectral-efficiency and high-capacity optical communication system.In this paper, we extend our previous work and report the fully experimental demonstration of polarization-division multiplexed (PDM) all-optical Nyquist signal generation based on Sinc-shaped Nyquist pulse with advanced modulation formats, fiber-transmission and single-receiver full-band coherent detection.Using this scheme, we have successfully demonstrated the generation, fiber transmission and single-receiver full-band coherent detection of all-optical Nyquist PDM-QPSK and PDM-16QAM signals up to 125-GBaud. 1-Tb/s single-carrier PDM-16QAM signal generation and full-band coherent detection is realized, which shows the advantage and feasibility of the single-carrier all-optical Nyquist signals.

View Article: PubMed Central - PubMed

Affiliation: Department of Communication Science and Engineering, and Key Laboratory for Information Science of Electromagnetic Waves (MoE), Fudan University, 220 Handan Road, Shanghai 200433, China.

ABSTRACT
All optical method is considered as a promising technique for high symbol rate Nyquist signal generation, which has attracted a lot of research interests for high spectral-efficiency and high-capacity optical communication system. In this paper, we extend our previous work and report the fully experimental demonstration of polarization-division multiplexed (PDM) all-optical Nyquist signal generation based on Sinc-shaped Nyquist pulse with advanced modulation formats, fiber-transmission and single-receiver full-band coherent detection. Using this scheme, we have successfully demonstrated the generation, fiber transmission and single-receiver full-band coherent detection of all-optical Nyquist PDM-QPSK and PDM-16QAM signals up to 125-GBaud. 1-Tb/s single-carrier PDM-16QAM signal generation and full-band coherent detection is realized, which shows the advantage and feasibility of the single-carrier all-optical Nyquist signals.

No MeSH data available.


Related in: MedlinePlus

Time-delay offset in orthogonal time-division multiplexing (orth-OTDM).(a) Only one pulse with time-delay offset represented as delta_t1 (the second pulse); (b) two pulses with same position time-delay offset represented as delta_t1 and delta_t2, and delta_t1 = delta_t2; (c) two pulses with opposite position time-delay offset, represented as delta_t1 and –delta_2, and delta_t1 = −delta_t2.
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f11: Time-delay offset in orthogonal time-division multiplexing (orth-OTDM).(a) Only one pulse with time-delay offset represented as delta_t1 (the second pulse); (b) two pulses with same position time-delay offset represented as delta_t1 and delta_t2, and delta_t1 = delta_t2; (c) two pulses with opposite position time-delay offset, represented as delta_t1 and –delta_2, and delta_t1 = −delta_t2.

Mentions: We initially study the OSNR penalty caused by time offset due to the inaccurate time-delays. Since the tunable time-delay in our experiment is based on a manually tunable time delay module, incorrect time-delays can cause some time-offset to each pulse in the OTDM. Here, we considered three simple cases of time-offset as shown in Fig. 11. Fig. 11(a) is the case where only one pulse (the second pulse) placed is in incorrect time, with a time offset represented as delta_t1. The other two cases, shown in Fig. 11(b,c), are more complicated. The second and fourth pulse are assumed with same or opposite time offsets, represented as delta_t1 and delta_t2. In Fig. 11(b), delta_t1 = delta_t2 and in Fig. 11(c), delta_t1 = −delta_t2.


Transmission and full-band coherent detection of polarization-multiplexed all-optical Nyquist signals generated by Sinc-shaped Nyquist pulses.

Zhang J, Yu J, Chi N - Sci Rep (2015)

Time-delay offset in orthogonal time-division multiplexing (orth-OTDM).(a) Only one pulse with time-delay offset represented as delta_t1 (the second pulse); (b) two pulses with same position time-delay offset represented as delta_t1 and delta_t2, and delta_t1 = delta_t2; (c) two pulses with opposite position time-delay offset, represented as delta_t1 and –delta_2, and delta_t1 = −delta_t2.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4555172&req=5

f11: Time-delay offset in orthogonal time-division multiplexing (orth-OTDM).(a) Only one pulse with time-delay offset represented as delta_t1 (the second pulse); (b) two pulses with same position time-delay offset represented as delta_t1 and delta_t2, and delta_t1 = delta_t2; (c) two pulses with opposite position time-delay offset, represented as delta_t1 and –delta_2, and delta_t1 = −delta_t2.
Mentions: We initially study the OSNR penalty caused by time offset due to the inaccurate time-delays. Since the tunable time-delay in our experiment is based on a manually tunable time delay module, incorrect time-delays can cause some time-offset to each pulse in the OTDM. Here, we considered three simple cases of time-offset as shown in Fig. 11. Fig. 11(a) is the case where only one pulse (the second pulse) placed is in incorrect time, with a time offset represented as delta_t1. The other two cases, shown in Fig. 11(b,c), are more complicated. The second and fourth pulse are assumed with same or opposite time offsets, represented as delta_t1 and delta_t2. In Fig. 11(b), delta_t1 = delta_t2 and in Fig. 11(c), delta_t1 = −delta_t2.

Bottom Line: All optical method is considered as a promising technique for high symbol rate Nyquist signal generation, which has attracted a lot of research interests for high spectral-efficiency and high-capacity optical communication system.In this paper, we extend our previous work and report the fully experimental demonstration of polarization-division multiplexed (PDM) all-optical Nyquist signal generation based on Sinc-shaped Nyquist pulse with advanced modulation formats, fiber-transmission and single-receiver full-band coherent detection.Using this scheme, we have successfully demonstrated the generation, fiber transmission and single-receiver full-band coherent detection of all-optical Nyquist PDM-QPSK and PDM-16QAM signals up to 125-GBaud. 1-Tb/s single-carrier PDM-16QAM signal generation and full-band coherent detection is realized, which shows the advantage and feasibility of the single-carrier all-optical Nyquist signals.

View Article: PubMed Central - PubMed

Affiliation: Department of Communication Science and Engineering, and Key Laboratory for Information Science of Electromagnetic Waves (MoE), Fudan University, 220 Handan Road, Shanghai 200433, China.

ABSTRACT
All optical method is considered as a promising technique for high symbol rate Nyquist signal generation, which has attracted a lot of research interests for high spectral-efficiency and high-capacity optical communication system. In this paper, we extend our previous work and report the fully experimental demonstration of polarization-division multiplexed (PDM) all-optical Nyquist signal generation based on Sinc-shaped Nyquist pulse with advanced modulation formats, fiber-transmission and single-receiver full-band coherent detection. Using this scheme, we have successfully demonstrated the generation, fiber transmission and single-receiver full-band coherent detection of all-optical Nyquist PDM-QPSK and PDM-16QAM signals up to 125-GBaud. 1-Tb/s single-carrier PDM-16QAM signal generation and full-band coherent detection is realized, which shows the advantage and feasibility of the single-carrier all-optical Nyquist signals.

No MeSH data available.


Related in: MedlinePlus