Cross mode modulation in multimode fibers

Kroushkov, Dimitar; Rademacher, Georg; Petermann, K.

doi:10.1364/ol.38.001642

Cited by 18 publications

(11 citation statements)

References 7 publications

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“…Additionally, our aim in this paper is to illustrate the potential of the IM-FWM process in FMF for converting mode degeneracy orientation (MDO) within particular mode Figure 13 shows that the low-power probe signal at 1546 nm can be rotated from LP 01 to LP b,x 11 , with the strong pump at 1558 nm equally split among the LP a,x 11 and LP b,x 11 modes, as an extension of XMM [60], which demonstrates that the FWM pulse characteristic includes switching between multiple degeneracy within LP mode groups as well.…”

Section: Resultsmentioning

confidence: 99%

Investigation of nonlinear effects in few-mode fibers

2015

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In this work, nonlinear optical effects are exploited for future implementations of space-division multiplexing fiber systems. The paper first presents the fundamentals of intermodal nonlinear phenomena over few-mode fibers, such as cross-phase modulation, four-wave mixing (FWM), stimulated Brillouin scattering and stimulated Raman scattering. Second, the potential applications of fewmode nonlinear effects are discussed for sensing and optical signal processing. We demonstrated how fiber mode symmetries and linear mode coupling affect intermodal power transfer and spectral broadening. Lastly, the paper proposes a ultrafast all-optical simultaneous wavelength and mode conversion scheme based on intermodal FWM, with the capability of switching state of polarization and mode degeneracy orientation. Under this scheme, cross-polarization modulation and cross-mode modulation can be achieved.

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Section: Resultsmentioning

confidence: 99%

Investigation of nonlinear effects in few-mode fibers

2015

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“…Instead of using generalized Manakov equation that deals with a modal group containing N degenerate modes with RMM [1], [9], we start from MNLSE [7], [11] for interaction between modes and consider the case without loss and dispersion…”

Section: Hamiltonian Framework Of Xmm Without Rmmmentioning

confidence: 99%

“…Cross-Mode modulation (XMM) describes the rotation of the mode profile of a weak probe light induced by a strong co-propagating pump light in multimode nonlinear optical waveguides [1]- [3]. In case of single mode waveguides, cross-phase modulation between the probe and pump light that are not co-polarized, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Such random mode mixing (RMM) may easily happen between modes with degenerate propagation constants. In an initial attempt of Hamiltonian approach in analyzing the XMM in degenerate mode group with random mode mixing (RMM), which greatly simplifies the coupling equations [1], we reveal the prediction as well as manipulation of the probe mode distribution with a clear picture of nonlinear birefringence [9], where the energy operator, i.e., the Hamiltonian of the system, indicates the allowed nonlinear propagation constants of probe light, derived by calculating the corresponding eigenvectors and eigenvalues. Notably, our previous work is typically for optical fibers, where RMM plays a relevant role.…”

Section: Introductionmentioning

confidence: 99%

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Spatial-Dependent Hamiltonian Formulation of Cross-Mode Modulation

Yang

Xiong

et al. 2020

IEEE Photonics J.

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In the absence of random mode mixing (RMM), linearization of the cross-mode modulation (XMM) under pump-probe configuration is in general complicated because the evolution of the pump light depends on the local mode decomposition of itself. In this work, general derivation of the Hamiltonian of the XMM system without RMM is carried out and discussed under two interesting scenarios where the pump evolution can be effectively linearized, leading to spatial dependent Hamiltonian of the probe light. Representative evolutions of pump and probe light over transmission are investigated with the assistance of Poincaré sphere based on the Hamiltonian approach. Our results are benchmarked against the results given by precession equations examined by Lin and Agrawal and numerical simulations using nonlinear coupled mode equations (CMEs). By highlighting the eigenstates as well as eigenvalues of the system, our approach provides an intuitive yet powerful approach to understand the XMM nonlinear problems and to dynamically manipulate the spatial profiles of the probe light.

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“…Coupled spatial superchannels in coupled-core MCF or MMF are subject to complex nonlinear effects. The scaling of spectral efficiency per spatial mode depends on how intraand inter-modal effective areas scale with the number of modes and how inter-modal interactions are affected by phase matching and envelope walkoff [54,55,83,84]. Strong mode coupling can mitigate nonlinear effects [54,55].…”

Section: Fiber Nonlinearitymentioning

confidence: 99%

Optical network scaling: roles of spectral and spatial aggregation

Arık¹,

Ho²,

Kahn³

2014

Opt. Express

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As the bit rates of routed data streams exceed the throughput of single wavelength-division multiplexing channels, spectral and spatial traffic aggregation become essential for optical network scaling. These aggregation techniques reduce network routing complexity by increasing spectral efficiency to decrease the number of fibers, and by increasing switching granularity to decrease the number of switching components. Spectral aggregation yields a modest decrease in the number of fibers but a substantial decrease in the number of switching components. Spatial aggregation yields a substantial decrease in both the number of fibers and the number of switching components. To quantify routing complexity reduction, we analyze the number of multi-cast and wavelength-selective switches required in a colorless, directionless and contentionless reconfigurable optical add-drop multiplexer architecture. Traffic aggregation has two potential drawbacks: reduced routing power and increased switching component size.

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Cross mode modulation in multimode fibers

Abstract: We show that Kerr nonlinearity induced intermodal power transfer in a particular mode group of a multimode fiber can be formulated by the same type of equation used to describe the effect of cross polarization modulation in single-mode fibers.

Cited by 18 publications

References 7 publications

Investigation of nonlinear effects in few-mode fibers

Investigation of nonlinear effects in few-mode fibers

Spatial-Dependent Hamiltonian Formulation of Cross-Mode Modulation

Optical network scaling: roles of spectral and spatial aggregation

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