Journal ArticleDOI
Laser Linewidth Estimation by Means of Coherent Detection
Reads0
Chats0
TLDR
In this article, the authors present a novel approach to measure the Lorentzian linewidth of a laser source based on a heterodyne detection scheme, such as may be implemented in a coherent optical receiver for data communications, using both in-phase and quadrature information of the optical field.Abstract:
In this letter, we present a novel approach to measure the Lorentzian linewidth of a laser source. The approach is based on a heterodyne detection scheme, such as may be implemented in a coherent optical receiver for data communications, using both in-phase and quadrature information of the optical field. In contrast to previously published works, this approach does not suffer from modulation effects on the laser output.read more
Citations
More filters
Journal ArticleDOI
Artificial intelligence (AI) methods in optical networks: A comprehensive survey
Javier Mata,Ignacio de Miguel,Ramón J. Durán,Noemí Merayo,Sandeep Singh,Admela Jukan,Mohit Chamania +6 more
TL;DR: A comprehensive review of the application of AI techniques for improving performance of optical communication systems and networks and a summary of opportunities and challenges in optical networking where AI is expected to play a key role in the near future.
Journal ArticleDOI
Artificial Intelligence (AI) Methods in Optical Networks: A Comprehensive Survey
Javier Mata,Ignacio de Miguel,Ramó n J. Durá n,Noemí Merayo,Sandeep Singh,Admela Jukan,Mohit Chamania +6 more
TL;DR: In this paper, a comprehensive review of the application of AI techniques for improving performance of optical communication systems and networks is presented, including topics like optical network planning and operation in both transport and access networks.
Journal ArticleDOI
Application of Machine Learning Techniques for Amplitude and Phase Noise Characterization
Darko Zibar,Luis H. H. Carvalho,Molly Piels,Andy Doberstein,Júlio César Medeiros Diniz,Bernd Nebendahl,Carolina Franciscangelis,Jose Estaran,Hansjoerg Haisch,Neil Guerrero Gonzalez,Julio C. R. F. Oliveira,Idelfonso Tafur Monroy +11 more
TL;DR: It is shown that phase noise estimation based on Bayesian filtering outperforms conventional time-domain approach in the presence of moderate measurement noise.
Journal ArticleDOI
Accurate frequency noise measurement of free-running lasers
TL;DR: A simple method to accurately measure the frequency noise power spectrum of lasers that does not require stabilization of the laser to an optical reference, and omits a frequency discriminator and hence avoids bandwidth limitation and nonlinearity effects common to high-resolution frequency discriminators.
Journal ArticleDOI
Dynamic linewidth measurement technique using digital intradyne coherent receivers
Robert Maher,Benn C. Thomsen +1 more
TL;DR: The linewidth settling time of a fast switching tuneable laser is investigated using a dynamic coherent receiver and it is shown that a minimum linewitzer can be realised within 70ns of a wavelength switching event.
References
More filters
Journal ArticleDOI
Novel method for high resolution measurement of laser output spectrum
TL;DR: In this paper, the authors proposed a method by which 50 kHz resolution can be obtained for measuring the spectrum of stabilised semiconductor laser with high spectral spread, and the principle, experimental set up and results are described.
Journal ArticleDOI
Statistical properties of a sine wave plus random noise
TL;DR: A number of statistical properties of such a current which consists of a sinusoidal component plus a random noise component are given here.
Book
Fiber optic test and measurement
TL;DR: In this paper, the authors present measurement principles for characterizing all three basic components of a fiber optic communication system: the optical transmitter, fiber medium and optical receiver, and discuss the principles and limitations of current fiber optic testing equipment.
Journal ArticleDOI
Coherent detection of optical quadrature phase-shift keying signals with carrier phase estimation
TL;DR: In this paper, a coherent optical receiver for demodulating optical quadrature phase-shift keying (QPSK) signals is proposed. But the authors do not consider the phase-diversity homodyne detection at the receiver.
Journal ArticleDOI
Effect of 1/f-type FM noise on semiconductor-laser linewidth residual in high-power limit
TL;DR: In this paper, a 5-MHz residual linewidth is observed in the high-power limit of 1.3 mu m DFB (distributed feedback) semiconductor lasers.