Stokes-space analysis of modal dispersion in fibers with multiple mode transmission
Reads0
Chats0
TLDR
The formalism developed for PMD is extended to characterize MD in fibers with multiple spatial modes and a MD vector defined in a D-dimensional extended Stokes space whose square length is the sum of the square group delays of the generalized principal states is introduced.Abstract:
Modal dispersion (MD) in a multimode fiber may be considered as a generalized form of polarization mode dispersion (PMD) in single mode fibers. Using this analogy, we extend the formalism developed for PMD to characterize MD in fibers with multiple spatial modes. We introduce a MD vector defined in a D-dimensional extended Stokes space whose square length is the sum of the square group delays of the generalized principal states. For strong mode coupling, the MD vector undertakes a D-dimensional isotropic random walk, so that the distribution of its length is a chi distribution with D degrees of freedom. We also characterize the largest differential group delay, that is the difference between the delays of the fastest and the slowest principal states, and show that it too is very well approximated by a chi distribution, although in general with a smaller number of degrees of freedom. Finally, we study the spectral properties of MD in terms of the frequency autocorrelation functions of the MD vector, of the square modulus of the MD vector, and of the largest differential group delay. The analytical results are supported by extensive numerical simulations.read more
Citations
More filters
Journal ArticleDOI
Space-division multiplexing: the next frontier in optical communication
TL;DR: This paper focuses on SDM for fiber-optic communication using few-mode fibers or multimode fibers, in particular on the critical challenge of mode crosstalk, and presents the prospects for SDM in optical transmission and networking.
Journal ArticleDOI
Fiber-optic transmission and networking: the previous 20 and the next 20 years [Invited]
TL;DR: Focusing on the optical transport and switching layer, aspects of large-scale spatial multiplexing, massive opto-electronic arrays and holistic optics-electronics-DSP integration, as well as optical node architectures for switching and multiplexed of spatial and spectral superchannels are covered.
Journal ArticleDOI
Observation of Eisenbud–Wigner–Smith states as principal modes in multimode fibre
TL;DR: In this article, a set of principal modes that maintain pulse properties and spatial coherence despite propagation in 100m of multimode fiber were observed, and the authors found that the principal modes were the same for all the modes.
Journal ArticleDOI
Modeling of Nonlinear Propagation in Space-Division Multiplexed Fiber-Optic Transmission
TL;DR: In this paper, the authors consider the effect of the number of propagation modes on the information capacity of SDM fibers and assess the way in which information capacity is expected to scale with a number of propagations.
Journal ArticleDOI
Nonlinear propagation in multi-mode fibers in the strong coupling regime
TL;DR: It is shown that light propagation in a group of degenerate modes of a multi-mode optical fiber in the presence of random mode coupling is described by amulti-component Manakov equation, thereby making multi- mode fibers the first reported physical system that admits true multi-component soliton solutions.
References
More filters
Journal ArticleDOI
Measurement of qubits
Daniel F. V. James,Paul G. Kwiat,Paul G. Kwiat,William J. Munro,William J. Munro,Andrew White,Andrew White +6 more
TL;DR: In this paper, the theory underpinning the measurement of density matrices of a pair of quantum two-level systems is described, and a detailed error analysis is presented, allowing errors in quantities derived from the density matrix, such as the entropy or entanglement of formation.
Journal ArticleDOI
Symmetries of baryons and mesons
TL;DR: In this article, it is suggested that the group is in fact U(3)×U(3), exemplified by the symmetrical Sakata model, and the symmetrized Sakata models are used to define the structure of baryons and mesons.
Journal ArticleDOI
The ultra-wide bandwidth indoor channel: from statistical model to simulations
TL;DR: A statistical model for the ultra-wide bandwidth (UWB) indoor channel is established based on an extensive measurement campaign in a typical modern office building with 2-ns delay resolution and it is found that the correlation between multipath components is negligible.
Journal ArticleDOI
Mode-Division Multiplexing Over 96 km of Few-Mode Fiber Using Coherent 6 $\,\times\,$ 6 MIMO Processing
R. Ryf,Sebastian Randel,Alan H. Gnauck,C. Bolle,A. Sierra,Sami Mumtaz,Mina Esmaeelpour,Ellsworth Burrows,R.-J. Essiambre,Peter J. Winzer,D. W. Peckham,Alan McCurdy,Robert Lingle +12 more
TL;DR: In this article, simultaneous transmission of six spatial and polarization modes, each carrying 40 Gb/s quadrature-phase-shift-keyed channels over 96 km of a low-differential group delay few-mode fiber, is reported.
Journal ArticleDOI
PMD fundamentals: Polarization mode dispersion in optical fibers
James P. Gordon,H. Kogelnik +1 more
TL;DR: This paper reviews the fundamental concepts and basic theory of polarization mode dispersion in optical fibers and introduces a unified notation and methodology to link the various views and concepts in Jones space and Stokes space.
Related Papers (5)
Statistics of Group Delays in Multimode Fiber With Strong Mode Coupling
Keang-Po Ho,Joseph M. Kahn +1 more