An Ultra-Broadband Polarization-Insensitive Optical Hybrid Using Multiplane Light Conversion

Zhang, Yuanhang; Fontaine, Nicolas K.; Chen, Haoshuo; Ryf, Roland; Neilson, David T.; Carpenter, Joel; Li, Guifang

doi:10.1109/jlt.2020.3012108

Cited by 13 publications

(10 citation statements)

References 27 publications

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“…The complex amplitudes of the input modes could be retrieved from the interference light intensities. Furthermore, an ultrabroadband polarization-insensitive optical hybrid using MPLC was experimentally verified 57 . As shown in Fig.…”

Section: Mvms For Optical Signal Processingmentioning

confidence: 97%

“…A more powerful PLC-MVM for unitary spatial mode manipulation was proved with multiplane light conversion (MPLC) 44 , 45 , in which the input/output vectors are distributed in the whole two-dimensional plane, and the scale is proportional to . Afterwards, the MPLC technique was widely used in various fields, such as for all-optical machine learning 46 – 48 , the Laguerre-Gaussian or orbital angular momentum (OAM) mode sorter 49 , 50 , the photonic Ising machine 51 , 52 , time-reversed optical waves 53 , optical logic operations 54 , optical encryption and perceptrons 55 , 56 , optical hybrid 57 and neuromorphic optoelectronic computing 58 . Although MPLC can achieve ultralarge-scale MVMs, the devices are bulky, and the reprogramming speed for weight encoding is still limited.…”

Section: Matrix-vector Multiplicationmentioning

confidence: 99%

“…c Mode demultiplexing hybrid 100 . d Ultrabroadband polarization-insensitive optical hybrid 57 . a Reprinted with permission from ref.…”

Section: Mvms For Optical Signal Processingmentioning

confidence: 99%

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Photonic matrix multiplication lights up photonic accelerator and beyond

et al. 2022

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Matrix computation, as a fundamental building block of information processing in science and technology, contributes most of the computational overheads in modern signal processing and artificial intelligence algorithms. Photonic accelerators are designed to accelerate specific categories of computing in the optical domain, especially matrix multiplication, to address the growing demand for computing resources and capacity. Photonic matrix multiplication has much potential to expand the domain of telecommunication, and artificial intelligence benefiting from its superior performance. Recent research in photonic matrix multiplication has flourished and may provide opportunities to develop applications that are unachievable at present by conventional electronic processors. In this review, we first introduce the methods of photonic matrix multiplication, mainly including the plane light conversion method, Mach–Zehnder interferometer method and wavelength division multiplexing method. We also summarize the developmental milestones of photonic matrix multiplication and the related applications. Then, we review their detailed advances in applications to optical signal processing and artificial neural networks in recent years. Finally, we comment on the challenges and perspectives of photonic matrix multiplication and photonic acceleration.

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Section: Mvms For Optical Signal Processingmentioning

confidence: 97%

Section: Matrix-vector Multiplicationmentioning

confidence: 99%

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Photonic matrix multiplication lights up photonic accelerator and beyond

et al. 2022

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“…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%

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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“…Ultra-broadband operation covering the wavelength ranges from 1280 to 1630 nm is then confirmed. While a heterodyne-based receiver array and the passive optical hybrids without detectors , in surface-normal configurations have been reported previously, a full homodyne coherent receiver chip with integrated balanced detectors has not been realized experimentally. To the best of our knowledge, this is the first demonstration of a surface-normal homodyne coherent optical receiver.…”

mentioning

confidence: 99%

Ultra-Broadband Surface-Normal Coherent Optical Receiver with Nanometallic Polarizers

et al. 2022

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A coherent receiver that can demodulate high-speed in-phase and quadrature signals of light is an essential component for optical communication, interconnects, imaging, and computing.Conventional waveguide-based coherent receivers, however, exhibit large footprints, difficulty in coupling a large number of spatial channels efficiently, and limited operating bandwidth imposed by the waveguide-based optical hybrid. Here, we present a surface-normal coherent receiver with nanometallic-grating-based polarizers integrated directly on top of photodetectors without the need for an optical hybrid circuit. Using a fabricated device with the active section occupying a 70-μm-

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An Ultra-Broadband Polarization-Insensitive Optical Hybrid Using Multiplane Light Conversion

Cited by 13 publications

References 27 publications

Photonic matrix multiplication lights up photonic accelerator and beyond

Photonic matrix multiplication lights up photonic accelerator and beyond

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

Ultra-Broadband Surface-Normal Coherent Optical Receiver with Nanometallic Polarizers

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