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Proceedings ArticleDOI

Demonstration of all-optical clock recovery from NRZ-PM-QPSK and PM-16QAM signals

05 May 2019-

AbstractWe demonstrate all-optical clock recovery from optical NRZ-PM-QPSK and NRZ-PM-16QAM data at 10 Gbaud after 60 km fiber propagation, through injection-locking of an Erbium-doped fiber laser. © 2019 The Author(s)

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References
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Journal ArticleDOI
TL;DR: A black box phase sensitive amplifier based 3R regeneration scheme is proposed for non-return to zero quadrature phase shift keyed formatted signals to achieve performance improvements at the presence of input phase distortion.
Abstract: A black box phase sensitive amplifier based 3R regeneration scheme is proposed for non-return to zero quadrature phase shift keyed formatted signals. Performance improvements of more than 2 dB are achieved at the presence of input phase distortion.

13 citations

Journal ArticleDOI
Abstract: We compare two different nonlinear fiber-based approaches for all-optical clock recovery (AOCR) at 40 Gb/s. Both involve mode-locking a semiconductor fiber laser (SFL); one is based on the use of a nonlinear optical loop mirror (NOLM) while the second exploits nonlinear polarization rotation (NPR). We assess the impact of input signal characteristics on the RMS timing jitter and power fluctuation of the recovered clock. We also investigate the possibility for wavelength tunable operation. The results show that both approaches are capable of recovering a good quality clock signal over a large range of operating parameters. While the NPR-based approach has slightly better performance in terms of reduced power fluctuation and wavelength tunability, it is more sensitive to polarization. We also discuss the approaches for polarization-insensitive operation.

4 citations