Comparison of nematic liquid-crystal and DMD based spatial light modulation in complex photonics

Turtaev, Sergey; Leite, Ivo T.; Mitchell, Kevin J.; Padgett, Miles J.; Phillips, David B.; Čižmár, Tomáš

doi:10.1364/oe.25.029874

Cited by 112 publications

(65 citation statements)

References 34 publications

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“…This allows us to use this platform to emulate the coherent absorption effect close to the critical transmission of 0.5. The state-of-the-art γ of 0.6(0.8) was experimentally reported in a step-index MMF for a conserved circular input polarization (both linear polarization channels) [30,49,50].…”

Section: Fidelity Scalability and Programmability Of The Opticalmentioning

confidence: 99%

Programmable linear quantum networks with a multimode fibre

Leedumrongwatthanakun

Innocenti

Defienne

et al. 2019

Nat. Photonics

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The ability to implement reconfigurable linear optical circuits is a fundamental building block for the implementation of scalable quantum technologies. Here, we implement such circuits in a multimode fiber by harnessing its complex mixing using wavefront shaping techniques. We program linear transformations involving spatial and polarization modes of the fiber and experimentally demonstrate their accuracy and robustness using two-photon quantum states. In particular, we illustrate the reconfigurability of our platform by emulating a tunable coherent absorption experiment, where output probabilities of single-and two-photon survivals can be controlled. By demonstrating complex, reprogrammable, reliable, linear transformations, with the potential to scale, our results highlight the potential of complex media driven by wavefront shaping for quantum information processing.

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Section: Fidelity Scalability and Programmability Of The Opticalmentioning

confidence: 99%

Programmable linear quantum networks with a multimode fibre

Leedumrongwatthanakun

Innocenti

Defienne

et al. 2019

Nat. Photonics

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“…One of the main limiting factors of our demonstrations is the switching speed of the used liquid-crystal-based SLM, which is limited to 60 Hz. A faster generation method is possible using commercially available SLMs based on the use of digital micro-mirror devices (DMDs) [55]. Using the multimode encoding technique that we proposed in III-B2 can increase the transmission rate by having multiple spatially separated patterns on the same detector instead of only one.…”

Section: Practical Implementationmentioning

confidence: 99%

A CNN-Based Structured Light Communication Scheme for Internet of Underwater Things Applications

Trichili

Issaid

Ooi

et al. 2020

IEEE Internet Things J.

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Underwater optical wireless communication is an emerging field that can provide reliable connectivity for future generation internet of underwater things devices. In this paper, we propose a communication system based on single and superposition of Laguerre Gaussian modes to transfer information and rely on a convolutional neural network for the mode identification in an underwater environment. A 100% recovery fidelity is reported at clear and turbid water. Beyond 90% of identification, accuracy is achieved under different laboratory-emulated underwater turbulence conditions. The practical implementation of the proposed spatial-mode based communication scheme is further discussed.

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“…Ferroelectric liquid crystal (FLC) modulators [29,30] and digital micro-mirror devices (DMD) [31] are two commercial spatial light modulators capable of achieving sub-millisecond response [24]. Such a small panel size can be easily integrated into an optical machine or an embedded system.…”

Section: Switching Time For Phase Modulationmentioning

confidence: 99%

Pursuing High Quality Phase-Only Liquid Crystal on Silicon (LCoS) Devices

et al. 2018

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Fine pixel size and high-resolution liquid crystal on silicon (LCoS) backplanes have been developed by various companies and research groups since 1973. The development of LCoS is not only beneficial for full high definition displays but also to spatial light modulation. The high-quality and well-calibrated panels can project computer generated hologram (CGH) designs faithfully for phase-only holography, which can be widely utilized in 2D/3D holographic video projectors and components for optical telecommunications. As a result, we start by summarizing the current status of high-resolution panels, followed by addressing issues related to the driving frequency (i.e., liquid crystal response time and hardware interface). LCoS panel qualities were evaluated based on the following four characteristics: phase linearity control, phase precision, phase stability, and phase accuracy.A phase-only spatial light modulator can be used as a key optical element for displays, adaptive optics for sensing, lithography, and telecommunication, as shown in Figure 2. The linearity of phase modulation, response time, phase precision, and phase stability are key characteristics for appraising or selecting phase-only LCoS-SLM panels for the applications designed. However, it is difficult to obtain a single LCoS possessing all the desired features for all applications. Their specification and performance optimization are application-driven. For example, response time is the current limitation in a holographic display. It may be more important than phase stability,

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Comparison of nematic liquid-crystal and DMD based spatial light modulation in complex photonics

Cited by 112 publications

References 34 publications

Programmable linear quantum networks with a multimode fibre

Programmable linear quantum networks with a multimode fibre

A CNN-Based Structured Light Communication Scheme for Internet of Underwater Things Applications

Pursuing High Quality Phase-Only Liquid Crystal on Silicon (LCoS) Devices

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