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We propose and experimental demonstrate an elastic-bandwidth access scheme using spectrum-sliced incoherent light (SSIL) source with adaptive OFDM modulation in WDM-PON. We optimize the frequency efficiency of SSIL source by adaptive algorithm.
In this paper, we propose a novel pulse carver alignment monitoring method for RZ-DPSK and RZ-DQPSK signals by using equivalent tenth symbol delay phase portrait generated by delay-tap sampling technique. The sign and value of the time mis-alignment can be distinguished and quantized by simple pattern recognition on the phase portrait. The proposed method is tested in 10-Gb/s RZ-DPSK and 50-Gb/s RZ-DQPSK...
In this paper, we propose a simple in-band optical signal to noise ratio (OSNR) monitoring method based on the beat noise RF power measurement. This method splits the incoming optical signal into two branches, and one of the branches is processed by an optical band pass filter. Then, the signals in the two branches are detected by balanced receiver and the beat noise can be calculated. The simulation...
We demonstrate a simple chromatic dispersion (CD) monitoring method using amplitude ratio of asynchronous delay-tap sampling plot. By utilizing amplitude ratio in the delay-tap sampling plot, the residual CD values in the range of 0~75 ps/nm can be measured for 40-Gbit/s 67% carrier-suppressed return-to-zero (CSRZ) differential quadrature phase-shift keying (DQPSK), 50% return-to-zero (RZ) DQPSK and...
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