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High repetition rate stable short pulse sources play an important role in high speed optical communication systems. Besides developing a short pulse laser with very high fundamental repetition rate, the high repetition rate pulse train can also be obtained using various optical multiplication techniques, based on a Fabry-Perot filter or a fiber Bragg grating. A more stable system may be achievable...
Simultaneous transient suppression of four transient-impaired 40 Gbit/s RZ-ASK WDM channels is demonstrated. Sensitivity improvements are in excess of 5 dB and transmission penalties are significantly reduced.
We report the first demonstration of error-free 640 Gbit/s time-division add-drop multiplexing, performed by nonlinear polarisation-rotation using a loop with a polarisation-maintaining HNLF.
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