Journal ArticleDOI
Numerical generation of laser-resonance phase noise for optical communication simulators
Sean P. O Duill,Aravind P. Anthur,Tam N. Huynh,Sepideh T. Naimi,Lim Nguyen,Deepa Venkitesh,Liam P. Barry +6 more
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TLDR
It is shown with supporting experimental results that the laser-resonance phase noise on the pumps in four-wave-mixing-based wavelength converters is responsible for large bit error rate floors.Abstract:
We generate random numerical waveforms that mimic laser phase noise incorporating laser-resonance enhanced phase noise. The phase noise waveforms are employed in system simulators to estimate the resulting bit error rate penalties for differential quadrature phase shift keying signals. The results show that baudrate dependence of the bit error rate performance arises from laser-resonance phase noise. In addition, we show with supporting experimental results that the laser-resonance phase noise on the pumps in four-wave-mixing-based wavelength converters is responsible for large bit error rate floors.read more
Citations
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Journal ArticleDOI
Semiconductor optical amplifiers: recent advances and applications
Deepa Venkitesh,Laura Dybyssova +1 more
TL;DR: In this article , the basic functioning of an optical amplifier and distortions of coherent signals when used as amplifiers are discussed, and optical signal processing techniques enabled by SOAs with an emphasis on all-optical wavelength conversion, optical phase conjugation, and phase quantization of coherent optical signals.
Journal ArticleDOI
Fast Reconfigurable SOA-Based Wavelength Conversion of Advanced Modulation Format Data
TL;DR: In this article, the authors theoretically analyze the phase noise transfer issue between the pump and the wavelength-converted idler for a nondegenerate four-wave mixing (FWM) scheme, as well as study the vector theory in nonlinear semiconductor optical amplifiers (SOAs), in order to design a polarization-insensitive wavelength conversion system employing dual co-polarized pumps.
Proceedings ArticleDOI
Phase noise tolerant wavelength conversion of Nyquist-WDM superchannels using FWM in SOAs
TL;DR: In this article, the use of four-wave mixing (FWM) in a semiconductor optical (SOA) to wavelength convert an 896 Gbit/s optical superchannel comprising of 8×28 Gbaud 16-QAM.
Journal ArticleDOI
Numerical investigation of a feed-forward linewidth reduction scheme using a mode-locked laser model of reduced complexity.
Sean O'Duill,M. Omar Sahni,Stephane Trebaol,Pascal Landais,Laurent Bramerie,Stuart G. Murdoch,Pascal Besnard,Liam P. Barry +7 more
TL;DR: Numerical verification of a feed-forward, heterodyne-based phase noise reduction scheme using single-sideband modulation that obviates the need for optical filtering at the output and shows how to create numerical waveforms that mimic the random-walk nature of timing jitter of pulses from MLLs.
References
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Journal ArticleDOI
Theory of the phase noise and power spectrum of a single mode injection laser
TL;DR: In this paper, it was shown that the additional phase changes also give rise to line shape structure in the form of additional peaks separated from the main peak by multiples of the relaxation oscillation frequency.
Journal ArticleDOI
Degradation of bit-error rate in coherent optical communications due to spectral spread of the transmitter and the local oscillator
TL;DR: In this article, a theory describing the effect of the FM noise on the bit error rate (BER) performance of various heterodyne and homodyne schemes was developed and the feasibility of the phase shift keying (PSK) scheme using semiconductor lasers was also discussed on the basis of analysis and experimentation.
Journal ArticleDOI
Characterization of semiconductor-laser phase noise and estimation of bit-error rate performance with low-speed offline digital coherent receivers.
TL;DR: A systematic method for characterizing semiconductor-laser phase noise, using a low-speed offline digital coherent receiver, and can predict the bit-error rate (BER) performance of multi-level modulated optical signals at 10 Gsymbol/s.