Alternative passive fiber coupling system based on multi-plane light conversion for satellite-to-ground communications

Calvo, Ramon Mata; Allioux, David; Reeves, Andrew; Billaud, Antonin; Poliak, Juraj; Pinel, Olivier; Kelemu, Helawae Friew; Labroille, Guillaume; Richerzhagen, Mathias

doi:10.1117/12.2546076

Cited by 6 publications

(9 citation statements)

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“…Guided Gaussian beams in these fibers are then coherently combined to recover the transmitted optical signal. 7 An example of a simplified FSOC receiver schematic with a four-output MPLC followed by a 4-to-1 power combiner is shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

“…8 Recently published FSOC test results suggest that the MPLC device has a comparable or better performance than adaptive optics. 7 Adaptive optics systems mitigate turbulence-induced beam distortion and allow free-space coupling into single-mode fiber. These systems have high performance but typically require complex subsystems, such as a wave-front sensor and two-dimensional (2D) deformable reflector array.…”

Section: Introductionmentioning

confidence: 99%

“…Conversion between a larger number of spatially separated Gaussian and HG beams or arbitrary input beam shapes has been demonstrated. 4,5,7 Typically, small intensity features or high-spatial frequencies in the turbulence-corrupted optical beam require more higher-order HG modes to reproduce or recover the energy of fine features of the original turbulence-corrupted optical beam. In practice, the MPLC device is limited to a relatively small N due to implementation complexity, optics and fiber coupling losses, and cost.…”

Section: Introductionmentioning

confidence: 99%

“…For free-space optical communications (FSOCs), MPLC decomposes turbulence-corrupted optical beam into a relatively small number (e.g., N=10) of low-order HG modes that are subsequently transformed into N spatially separated fundamental Gaussian modes for coupling into N single-mode fibers. Guided Gaussian beams in these fibers are then coherently combined to recover the transmitted optical signal 7 . An example of a simplified FSOC receiver schematic with a four-output MPLC followed by a 4-to-1 power combiner is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Current commercially available MPLC devices are based on microoptics 8 . Recently published FSOC test results suggest that the MPLC device has a comparable or better performance than adaptive optics 7 . Adaptive optics systems mitigate turbulence-induced beam distortion and allow free-space coupling into single-mode fiber.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Investigation of turbulence-tolerant free-space optical communications via multiplane light conversion

Cho¹,

Pellegrino

Bickford

et al. 2022

Opt. Eng.

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Multiplane light conversion (MPLC) offers an alternative to adaptive optics for coupling a turbulence-corrupted free-space optical beam into single-mode fiber or waveguide. Recent published test results suggest that such a conversion device has comparable or better performance than an adaptive optics system. To better understand the device characteristics, simulations were conducted to quantify the power loss for different turbulence strengths and the number of Hermite-Gaussian modes used in the conversion process. The specific case studied is a prototype free-space laser communication system developed by the U.S. Army Research Laboratory. Simulation and statistical results of the conversion performance are reported. Analysis of a beam power combiner after MPLC is also discussed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Investigation of turbulence-tolerant free-space optical communications via multiplane light conversion

Cho¹,

Pellegrino

Bickford

et al. 2022

Opt. Eng.

View full text Add to dashboard Cite

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Insertion loss of a multi-plane light conversion device with few mode fiber outputs under atmospheric conditions

Tedder

Vyhnalek

Chahine

et al. 2022

Free-Space Laser Communications XXXIV

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Spatial diversity control law for demultiplexer and active photonic integrated circuits for atmospheric effect mitigation

Lucas,

Michau,

Meimon

2024

Free-Space Laser Communications XXXVI

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Free-space optical links theoretically allow very high-speed data rates. As the beams propagate through the atmosphere, the effects of turbulence introduce fading. To mitigate these effects, adaptive optics is commonly implemented. Recently, a spatial demultiplexer coupled to an active integrated photonic circuit has been proposed as a more compact solution to replace the adaptive optics device. This solution has been the subject of several demonstrations. In these demonstrations, the control of the photonic circuit is carried out by modulation or by criterion minimization. These techniques are demanding in terms of modulation bandwidth, particularly when the number of spatial modes to be corrected increases. We propose a control method allowing the increase of the number of corrected modes without increasing the modulation bandwidth. This control method is based on a spatial coding of the modulation, also called spatial diversity. Unlike state-of-the-art techniques in which modes are controlled sequentially, with spatial diversity, all the modes are controlled at the same time. Spatial diversity closed loop stability is demonstrated in a numerical simulation.

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Alternative passive fiber coupling system based on multi-plane light conversion for satellite-to-ground communications

Cited by 6 publications

References 0 publications

Investigation of turbulence-tolerant free-space optical communications via multiplane light conversion

Investigation of turbulence-tolerant free-space optical communications via multiplane light conversion

Insertion loss of a multi-plane light conversion device with few mode fiber outputs under atmospheric conditions

Spatial diversity control law for demultiplexer and active photonic integrated circuits for atmospheric effect mitigation

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