2500 km-10 Gbps RZ transmission system based on dispersion compensation CFBGs without electric regenerator |
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Authors: | Jihong CAO Yong CHEN Ting CHEN Shuisheng JIAN |
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Affiliation: | Key Lab of All Optical Network and Advanced Telecommunication Network of EMC, Beijing Jiaotong University, Beijing 100044, China;Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China |
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Abstract: | The characteristics of chirped fiber Bragg gratings (CFBGs) are optimized so that the ripple coefficient of the power reflectivity spectrum and group time delay are less than 1 dB and |± 15| ps, group delay is about 2600 ps/nm, polarization module dispersion is very small, PMD<2 ps, -3 dB bandwidth is about 0.35 nm, and insertion loss is about 4-5 dBm. Using dispersion compensation CFBG, a 2500 km-10 Gbps RZ optical signal transmission system on G.652 fiber was successfully demonstrated without an electric regenerator by optimizing dispersion management and loss management. The RZ optical signal was generated through a two-stage modulation method. At 2081 km, the power penalty of transmission is about 3 dB (conditions: RZ signal, BER = 10-12, PRBS = 1023 - 1); At 2560 km, the power penalty is about 5 dB. It is superior to the system using NRZ under the same conditions. |
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Keywords: | return to zero (RZ) signal chirped fiber Bragg grating (CFBG) dispersion compensation power penalty |
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