In this work we study all-optical multi-channel return-to-zero （RZ）-on-off keying （OOK） to nonreturn-to-zero （NRZ）-OOK format conversion in single uniform fiber Bragg grating （FBG） for mixed line-rate dense wa...In this work we study all-optical multi-channel return-to-zero （RZ）-on-off keying （OOK） to nonreturn-to-zero （NRZ）-OOK format conversion in single uniform fiber Bragg grating （FBG） for mixed line-rate dense wave- length-division multiplexing systems using mathematical simulations. Forty and 20 Gbit/s RZ-OOK signals with 33% and 50% duty cycles are converted to NRZ-OOK signals in single uniform FBG with 21~ reflectivity. Impact of amplitude noise from FBG contrast profile on modulation format conversion efficiency is also studied.展开更多
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
基金supported by the European Social Fund within the Project No.2013/0012/1DP/1.1.1.2.0/13/APIA/VIAA/051
文摘In this work we study all-optical multi-channel return-to-zero （RZ）-on-off keying （OOK） to nonreturn-to-zero （NRZ）-OOK format conversion in single uniform fiber Bragg grating （FBG） for mixed line-rate dense wave- length-division multiplexing systems using mathematical simulations. Forty and 20 Gbit/s RZ-OOK signals with 33% and 50% duty cycles are converted to NRZ-OOK signals in single uniform FBG with 21~ reflectivity. Impact of amplitude noise from FBG contrast profile on modulation format conversion efficiency is also studied.
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.
