Browsing by Author "Yu, Jianjun"

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A novel 10 Gb/s TDM-PON using embedded clocks in centralized optical signals and conventional CW receivers for instantaneous burst-mode data and clock recovery
(2008-01-01)
Chien, Hung-Chang
;
Huang, Ming-Fang
;
Chowdhury, Arshad
;
Yu, Jianjun
;
Chang, Gee-Kung
A novel 10Gb/s TDM-PON architecture with embedded clocks in centralized optical signals is proposed. Using this scheme, 10Gb/s burst-mode data and clock recovery through low-cost, conventional CW receivers have been designed and demonstrated. (C) 2008 Optical Society of America.
A novel dispersion-free interleaver for bidirectional DWDM transmission systems
(2007-11-01)
Huang, Ming-Fang
;
Chen, Jason Jyehong
;
Yu, Jianjun
;
Chi, Sien
;
Chang, Gee-Kung
We propose a novel dispersion-free interleaver using optical delay lines by accurately locating the zeros in the transfer function. It has been implemented with the design of interleaver pairs with the same amplitude responses but opposite phase responses for bidirectional dense wavelength-division multiplexed (DWDM) transmission systems. The measured results are consistent with device simulation. We have further modified the original three-port design using unidirectional amplification, and a four-port interleaver has been built and demonstrated to achieve bidirectional DWDM transmission. In this paper, we fully studied and verified the applications of our four-port interleavers in bidirectional transmission. We demonstrated a bidirectional strain-line system over 210 km and a recirculating loop transmission over a 500-km standard single-mode fiber using 10-Gb/s ON-OFF keying signals. Furthermore, we also demonstrated return-to-zero differential phase-shift keying (DPSK) and nonreturn-to-zero DPSK modulation formats for more than 230 km of transmission. For comparison, the different amplification functions, such as the erbium-doped fiber amplifier and the semiconductor optical amplifier, have also been probed in this paper. The experimental results have clearly illustrated the desirable functions of this novel bidirectional amplifier in this dispersion-free interleaver.
Simple WDM-PON architecture to simultaneously provide triple-play services by using one single modulator
(2008-01-01)
Huang, Ming-Fang
;
Yu, Jianjun
;
Chien, Hung-Chang
;
Chowdhury, Arshad
;
Chen, Jason (Jyehong)
Simple WDM-PON testbed with centralized-lightwave using single-arm IM to provide 10Gb/s data and 2.5Gb/s digital video downstream and 2.5Gb/s upstream data has been demonstrated. After 20km SSMF, power-penalty for all channels is less than 0.5dB. (C) 2006 Optical Society of America.