All-Optical Ultrafast Switching in 2 × 2 Silicon Microring Resonators and its Application to Reconfigurable DEMUX/MUX and Reversible Logic Gates

Sethi, Purnima; Roy, Sukhdev

doi:10.1109/jlt.2014.2315670

Cited by 49 publications

(11 citation statements)

References 32 publications

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“…Reversible computing is a broad concept which is applied in a number of domains including quantum computation [10], optical computing [12] and nanotechnology [13]. Table 2 provides a summary of some recent works on reversible digital design.…”

Section: Basics Of Reversible Logicmentioning

confidence: 99%

LDPC check node implementation using reversible logic

Awais

Razzaq

Ahmed

et al. 2019

IET Circuits, Devices & Systems

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Reversible logic is an emerging digital design paradigm which promises low energy dissipation; thanks to its information-lossless nature. True potential of this exciting concept can only be assessed by facing the design of practical complexity applications. Low density parity check (LDPC) decoding is one such application from forward error correction domain. The core of LDPC decoding is the check node (CN) processor, which executes the decoding algorithm and constitutes a major portion of decoder's overall power consumption. This work proposes a low-power LDPC CN architecture using reversible logic gates. Transistor level design and full custom layout of proposed architecture is carried out on UMC 90 nm complementary metal-oxide-semiconductor technology. All reversible blocks of proposed CN are optimised for quantum cost, garbage outputs and transistor count. The CN functionality is validated with post-layout simulations, layout versus schematic checks and design rule checks. The proposed CN occupies a post-layout area of 0.013 mm 2 , achieves up to 4.3 GHz frequency and consumes 52 μW power. The performance of proposed CN is also compared with its implementation using irreversible gates. The proposed CN achieves about 300% reduction in power delay product with affordable complexity as compared to its classical implementation.

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Section: Basics Of Reversible Logicmentioning

confidence: 99%

LDPC check node implementation using reversible logic

Awais

Razzaq

Ahmed

et al. 2019

IET Circuits, Devices & Systems

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“…In recent years, several reversible logic circuits have been reported. All-optical Fredkin gate and Toffoli gate based on silicon microring resonators (MRRs) utilizing two-photon absorption induced free-carrier injection have been studied [6]. Logic operations at 40 Gb/s can be enabled, but they require strong pumps to generate the nonlinear effect.…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Feynman Gate Based on Suspended Graphene Nano-Ribbon Waveguides at THz Wavelengths

et al. 2019

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In this paper, a plasmonic Feynman gate based on suspended graphene nanoribbon waveguides at THz wavelengths is proposed and numerically investigated. The proposed plasmonic Feynman gate is composed of two cascaded microring resonators. The resonant states of microring resonators are flexibly controlled by tuning chemical potentials of graphene in rings, and thus, the logic operation results of Feynman gate can be performed successfully. Compared to the plasmonic Feynman gate based on graphene nano-ribbons deposited on the Si substrate and the plasmonic Feynman gate based on graphene nanoribbons deposited on the SiO 2 /Si substrate, our designed plasmonic Feynman gate can have better extinction ratio and crosstalk. Calculation results exhibit that the extinction ratio is larger than 15.39 dB and the crosstalk is lower than −15.55 dB when input logic states of our designed device are '00', '01', '10,' and '11'.

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“…Ultrafast switching operations with speeds beyond the limits of electrical devices can only be achieved through an all-optical approach. In this context, different approaches have recently been demonstrated using nonlinear effects in χ (2) (2nd-order susceptibility) and χ (3) (3rd-order susceptibility) media [9][10][11][12][13][14][15][16][17][18]. Some of these techniques have been briefly compared providing their advantages and disadvantages [18].…”

Section: Introductionmentioning

confidence: 99%

Phase-sensitive fiber-based parametric all-optical switch

Parra-Cetina¹,

Kumpera²,

Karlsson³

et al. 2015

Opt. Express

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We experimentally demonstrate, for the first time, an all-optical switch in a phase-sensitive fiber optic parametric amplifier operated in saturation. We study the effect of phase variation of the signal and idler waves on the pump power depletion. By changing the phase of a 0.9 mW signal/idler pair wave by π/2 rad, a pump power extinction ratio of 30.4 dB is achieved. Static and dynamic characterizations are also performed and time domain results presented.

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All-Optical Ultrafast Switching in 2 × 2 Silicon Microring Resonators and its Application to Reconfigurable DEMUX/MUX and Reversible Logic Gates

Cited by 49 publications

References 32 publications

LDPC check node implementation using reversible logic

LDPC check node implementation using reversible logic

Plasmonic Feynman Gate Based on Suspended Graphene Nano-Ribbon Waveguides at THz Wavelengths

Phase-sensitive fiber-based parametric all-optical switch

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