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Abstract
A regenerative prescaled clock recovery device based on an optoelectronic version of the Miller divider has been tested in high-bit-rate OTDM systems. Tests at 4×2.5 and 4×10 Gbit/s have been performed to characterize the locking range and the frequency response of the device. The timing jitter of the recovered signal in the case of the 4×10 Gbit/s OTDM system does not exceed 0.5 ps. Finally, a comparison of two bit-error-rate measurements (with and without the clock recovery system) were carried out for the 4×10 Gbit/s OTDM system. The relevant penalty for each channel is negligible, while the maximum received power difference among the four channels at a bit error rate value of 10−10 is around 0.7 dB.
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