Three dispersion compensation schemes of an optical label switching transmission system were investigated, which employs 40 Gbit/s return zero differential phase-shift keying（RZ-DPSK） payload labeled with 2.5 Gbit/s...Three dispersion compensation schemes of an optical label switching transmission system were investigated, which employs 40 Gbit/s return zero differential phase-shift keying（RZ-DPSK） payload labeled with 2.5 Gbit/s on-off keying（OOK） signal based on the optical carrier suppression and separation（OCSS） techniq ue, In the system, proposed are the receiver sensi ti vity oS payload and label, achieving -- 32. 4 dBm and --38.5 dBm, respectively. Using the optimal dispersion compensation scheme, after transmitted over 160 km and 320 km SMF respectively, the label can be recovered without power penalty, while the payload can be recovered with less than 2 dB and 5 dB penalty, respectively.展开更多
Researched is the generation method about carrier-suppressed return-to-zero（CS-RZ） and single sideband return-to-zero（SSB-RZ） formats. The performance is simulated and analyzed when both CS-RZ and SSB-RZ formats a...Researched is the generation method about carrier-suppressed return-to-zero（CS-RZ） and single sideband return-to-zero（SSB-RZ） formats. The performance is simulated and analyzed when both CS-RZ and SSB-RZ formats are used respectively in symbol overlapping fast frequency hop optical code division multiple access（SO-FFH-OCDMA） system at the transmission rate of 10 Gb/s. The simulation demonstrates that both formats are applicable in OCDMA system. For the system using either CS-RZ or SSB-RZ, Q factor degrades with the increase of transmission distance and increases with the increase of input power. Moreover, the performance of SO-FFH-OCDMA system with CS-RZ is better than that of SSP,-RZ at the same transmission distance and input power.展开更多
An all-optical format conversion from non-return-to-zero （NRZ） to return-to-zero （RZ） is presented based on cross-phase modulation （XPM） in a silicon waveguide with a detuned optical bandpass filter （OBPF）. Th...An all-optical format conversion from non-return-to-zero （NRZ） to return-to-zero （RZ） is presented based on cross-phase modulation （XPM） in a silicon waveguide with a detuned optical bandpass filter （OBPF）. The simulation results show that the tunable bandwidth of the OBPF leads.to RZ signals with tunable pulse width. The conversion efficiency （CE） and the pattern effect of the RZ signal are attributed to the parameters of the pump pulse and the OBPE The converted RZ signal exhibits lower timing jitter than the NRZ signal.展开更多
基金National Natural Science Foundation of China(60677004)National High Technology"863"Research and Development Program of China(2007AA01Z260)+4 种基金Key Project of Chinese Ministry of Education(107011)Key Laboratory of Broadband Optical Fiber Transmission and Communication Networks(Ministry of Education)Teaching and Scientific Research Foundation for the Returned Overseas Chinese Scholars(State Education Ministry)the Corporative Building Project of Beijing Educational Committee(XK100130737)Program for New Century Excellent Talents in University of China( NECT-07-0111)
文摘Three dispersion compensation schemes of an optical label switching transmission system were investigated, which employs 40 Gbit/s return zero differential phase-shift keying（RZ-DPSK） payload labeled with 2.5 Gbit/s on-off keying（OOK） signal based on the optical carrier suppression and separation（OCSS） techniq ue, In the system, proposed are the receiver sensi ti vity oS payload and label, achieving -- 32. 4 dBm and --38.5 dBm, respectively. Using the optimal dispersion compensation scheme, after transmitted over 160 km and 320 km SMF respectively, the label can be recovered without power penalty, while the payload can be recovered with less than 2 dB and 5 dB penalty, respectively.
基金National Natural Science Foundation of China(60577045)Programfor New Century Excellent Talents in University( NECT -07-0111)+1 种基金National "863"Program(2007AA01Z260) Teaching and Scientific Research Foundation for the Returned Overseas Chinese Scholars ,State Education Ministry and supported partly by Key Laboratory of Broadband Optical Fiber Transmission and Communication Networks(UESTC), Ministry of Education
文摘Researched is the generation method about carrier-suppressed return-to-zero（CS-RZ） and single sideband return-to-zero（SSB-RZ） formats. The performance is simulated and analyzed when both CS-RZ and SSB-RZ formats are used respectively in symbol overlapping fast frequency hop optical code division multiple access（SO-FFH-OCDMA） system at the transmission rate of 10 Gb/s. The simulation demonstrates that both formats are applicable in OCDMA system. For the system using either CS-RZ or SSB-RZ, Q factor degrades with the increase of transmission distance and increases with the increase of input power. Moreover, the performance of SO-FFH-OCDMA system with CS-RZ is better than that of SSP,-RZ at the same transmission distance and input power.
文摘An all-optical format conversion from non-return-to-zero （NRZ） to return-to-zero （RZ） is presented based on cross-phase modulation （XPM） in a silicon waveguide with a detuned optical bandpass filter （OBPF）. The simulation results show that the tunable bandwidth of the OBPF leads.to RZ signals with tunable pulse width. The conversion efficiency （CE） and the pattern effect of the RZ signal are attributed to the parameters of the pump pulse and the OBPE The converted RZ signal exhibits lower timing jitter than the NRZ signal.
