Information theoretic framework for the analysis of a slow-light delay device

Neifeld, Mark A.; Lee, Myungjun

doi:10.1364/josab.25.000c31

Cited by 10 publications

(12 citation statements)

References 18 publications

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“…In conclusion, we use a recently developed information-theoretic framework [30] for quantifying the delay and signal fidelity of a slow-light system based on SBS in a room-temperature single-mode fiber pumped by a spectrally-broadened laser. We show that the IT increases with increasing SNR, as expected from basic information theory [31].…”

Section: Discussionmentioning

confidence: 99%

“…Recently, Neifeld and Lee [30] introduced an information-theoretic metric that uses Shannon information theory [31] to estimate the IT and ID of a slow-light system. In this approach, the mutual information (MI) is used to determine the information transfer rate between the slow-light input X and output Y, where the MI is defined as IðX; YÞ ¼ HðXÞ − HðXjYÞ, HðXÞ denotes the entropy of the binary-valued discrete input X [35], and HðXjYÞ is the conditional entropy given the output Y.…”

Section: Slow-light Data Fidelity Metricsmentioning

confidence: 99%

“…(2)). This issue can be addressed using a temporal window that contains the input pulse sequence [30]. In this way, one can compute the MI between the input X and only that part of Y contained in the finite output window as a function of the output window offset.…”

Section: Slow-light Data Fidelity Metricsmentioning

confidence: 99%

“…Recently, Neifeld and Lee [30] developed an alternative method for analyzing slow-light delay devices using an information-theoretic framework. In particular, their approach uses the Shannon mutual information [31] to quantify the information contained in a measured signal arising from a finite-duration data sequence for a specific choice of an input-output signaling protocol.…”

Section: Introductionmentioning

confidence: 99%

“…The primary purpose of this paper is to apply the information-theoretic analysis method [30] to a broadband SBS-based slow-light system in the presence of distortion and noise and use it to optimize its performance. In the next section, we give an overview of the slow-light system.…”

Section: Introductionmentioning

confidence: 99%

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Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system

et al. 2011

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We use an information-theoretic method developed by Neifeld and Lee [J. Opt. Soc. Am. A 25, C31 (2008)] to analyze the performance of a slow-light system. Slow-light is realized in this system via stimulated Brillouin scattering in a 2 km-long, room-temperature, highly nonlinear fiber pumped by a laser whose spectrum is tailored and broadened to 5 GHz. We compute the information throughput (IT), which quantifies the fraction of information transferred from the source to the receiver and the information delay (ID), which quantifies the delay of a data stream at which the information transfer is largest, for a range of experimental parameters. We also measure the eye-opening (EO) and signal-to-noise ratio (SNR) of the transmitted data stream and find that they scale in a similar fashion to the information-theoretic method. Our experimental findings are compared to a model of the slow-light system that accounts for all pertinent noise sources in the system as well as data-pulse distortion due to the filtering effect of the SBS process. The agreement between our observations and the predictions of our model is very good. Furthermore, we compare measurements of the IT for an optimal flattop gain profile and for a Gaussianshaped gain profile. For a given pump-beam power, we find that the optimal profile gives a 36% larger ID and somewhat higher IT compared to the Gaussian profile. Specifically, the optimal (Gaussian) profile produces a fractional slow-light ID of 0.94 (0.69) and an IT of 0.86 (0.86) at a pump-beam power of 450 mW and a data rate of 2:5 Gbps. Thus, the optimal profile better utilizes the available pump-beam power, which is often a valuable resource in a system design.

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Section: Discussionmentioning

confidence: 99%

Section: Slow-light Data Fidelity Metricsmentioning

confidence: 99%

Section: Slow-light Data Fidelity Metricsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system

et al. 2011

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Superluminal propagation and information transfer: A statistical approach in the microwave domain

Dorrah¹,

Kayili²,

Mojahedi³

2014

Physics Letters A

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Information physics fundamentals of nanophotonics

et al. 2013

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Nanophotonics has been extensively studied with the aim of unveiling and exploiting light-matter interactions that occur at a scale below the diffraction limit of light, and recent progress made in experimental technologies--both in nanomaterial fabrication and characterization--is driving further advancements in the field. From the viewpoint of information, on the other hand, novel architectures, design and analysis principles, and even novel computing paradigms should be considered so that we can fully benefit from the potential of nanophotonics. This paper examines the information physics aspects of nanophotonics. More specifically, we present some fundamental and emergent information properties that stem from optical excitation transfer mediated by optical near-field interactions and the hierarchical properties inherent in optical near-fields. We theoretically and experimentally investigate aspects such as unidirectional signal transfer, energy efficiency and networking effects, among others, and we present their basic theoretical formalisms and describe demonstrations of practical applications. A stochastic analysis of light-assisted material formation is also presented, where an information-based approach provides a deeper understanding of the phenomena involved, such as self-organization. Furthermore, the spatio-temporal dynamics of optical excitation transfer and its inherent stochastic attributes are utilized for solution searching, paving the way to a novel computing paradigm that exploits coherent and dissipative processes in nanophotonics.

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Information theoretic framework for the analysis of a slow-light delay device

Cited by 10 publications

References 18 publications

Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system

Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system

Superluminal propagation and information transfer: A statistical approach in the microwave domain

Information physics fundamentals of nanophotonics

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