Learning and Avoiding Disorder in Multimode Fibers

Matthès, Maxime W.; Bromberg, Yaron; Rosny, Julien de; Popoff, Sébastien M.

doi:10.1103/physrevx.11.021060

Cited by 56 publications

(35 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conceptually, the exponential map could be extended to include attenuation and, hence, define non-unitary dispersion matrices that linearize the relation between the TM of complex media at different wavelengths, but would need improved optimization strategies. Instead of a change in wavelength, Matthès et al 41 recently analyzed an operator similar to our dispersion matrix that describes the change in the TM when physically deforming MMF. We speculate that using an exponential map would enable convenient parameterization of this deformation operator.…”

Section: Discussionmentioning

confidence: 99%

Efficient dispersion modeling in optical multimode fiber

et al. 2023

View full text Add to dashboard Cite

Dispersion remains an enduring challenge for the characterization of wavelength-dependent transmission through optical multimode fiber (MMF). Beyond a small spectral correlation width, a change in wavelength elicits a seemingly independent distribution of the transmitted field. Here we report on a parametric dispersion model that describes mode mixing in MMF as an exponential map and extends the concept of principal modes to describe the fiber’s spectrally resolved transmission matrix (TM). We present computational methods to fit the model to measurements at only a few, judiciously selected, discrete wavelengths. We validate the model in various MMF and demonstrate an accurate estimation of the full TM across a broad spectral bandwidth, approaching the bandwidth of the best-performing principal modes, and exceeding the original spectral correlation width by more than two orders of magnitude. The model allows us to conveniently study the spectral behavior of principal modes, and obviates the need for dense spectral measurements, enabling highly efficient reconstruction of the multispectral TM of MMF.

show abstract

Section: Discussionmentioning

confidence: 99%

Efficient dispersion modeling in optical multimode fiber

et al. 2023

View full text Add to dashboard Cite

show abstract

“…See also, Shen et, al, [17]. Very recently these methods have been significantly enhanced for communications and other applications, Metthes [18].…”

Section: Principal Modes In Optical Fiber Single Mode and Multimodementioning

confidence: 99%

Light Localization and Principal Mode Propagation in Optical Fibers

Nolan

Nguyen

2021

Front. Phys.

View full text Add to dashboard Cite

The capacity of optical fiber communications has grown exponentially since its implementation decades ago. Optical fiber amplifiers, wavelength division multiplexing, and coherent communications have all enabled discontinuous growth. Space division multiplexing is proposed as the next discontinuity. Here tens of modes rather than a single mode are utilized in the transmission. Random scattering due to index fluctuations within the optical fiber cause coupling among the modal channels thereby degrading signal transmission. Principal mode transmission overcomes this limitation. Here a set of modes arrive localized at the fiber output unscattered. We review this methodology as it relates to optical communication capacity, but also as it relates to light localization. We also review the characterization of these modes both theoretically and experimentally.

show abstract

“…In particular, photonic spatial degrees of freedom such as orbital angular momentum (OAM) offer an unbounded Hilbert space to encode information, and provide intrinsic support for quantum key or entanglement distribution protocols [4][5][6][7], via high-dimensional multiplexing which enables greater channel capacities [8] and enhanced security [9]. While communication based on such twisted photons was successfully demonstrated for table-top [10], indoor [11] or short outdoor [12] channels, transport of photonic OAM through complex random media, e.g., the atmosphere [13][14][15], water [16,17] or multimode fiber [3,18], remains challenging. Typically, stochastic fluctuations of the underlying media's refractive index induce phase distortions as well as intensity fluctuations upon propagation, leading to transmission losses and intermodal crosstalk [19,20], potentially disrupting communication.…”

mentioning

confidence: 99%

Universal crosstalk of twisted light in random media

Bachmann¹,

Klug²,

Isoard³

et al. 2022

Preprint

View full text Add to dashboard Cite

Structured light offers wider bandwidths and higher security for communication. However, propagation through complex random media, such as the Earth's atmosphere, typically induces intermodal crosstalk. We show numerically and experimentally that coupling of photonic orbital angular momentum (OAM) modes is governed by a universal function of a single parameter -the ratio between the random medium's and the beam's transverse correlation lengths, even in the regime of pronounced intensity fluctuations.

show abstract

Learning and Avoiding Disorder in Multimode Fibers

Cited by 56 publications

References 36 publications

Efficient dispersion modeling in optical multimode fiber

Efficient dispersion modeling in optical multimode fiber

Light Localization and Principal Mode Propagation in Optical Fibers

Universal crosstalk of twisted light in random media

Contact Info

Product

Resources

About