High-speed addition/subtraction/complement/doubling of quaternary numbers using optical nonlinearities and DQPSK signals

Wang, Jian; Nuccio, Scott; Yang, Jeng-Yuan; Wu, Xiaoxia; Bogoni, Antonella; Willner, Alan E.

doi:10.1364/ol.37.001139

Cited by 37 publications

(20 citation statements)

References 14 publications

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“…In this chapter, we tend to provide a comprehensive report of our recent research works on M-ary optical computing for multilevel modulation formats by exploiting optical nonlinearities [70][71][72][73][74][75]. Various material platforms, including HNLFs, graphene-assisted optical devices, and silicon waveguide devices, are adopted to performing high-speed M-ary addition and subtraction.…”

Section: For Inter-datamentioning

confidence: 99%

M-ary Optical Computing

Wang¹,

Long²

2017

Cloud Computing - Architecture and Applications

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The era of cloud computing has fuelled the increasing demand on data centers for highperformance, high-speed data storage and computing. Digital signal processing may find applications in future cloud computing networks containing a large sum of data centers. Addition and subtraction are considered to be fundamental building blocks of digital signal processing which are ubiquitous in microprocessors for arithmetic operations. However, the processing speed is limited by the electronic bottleneck. It might be valuable to implement high-speed arithmetic operations of addition and subtraction in the optical domain. In this chapter, recent results of M-ary optical arithmetic operations for high base numbers are presented. By exploiting degenerate and nondegenerate four-wave mixing (FWM) in highly nonlinear fibers (HNLFs), graphene-assisted optical devices, and silicon waveguide devices, various types of two-/three-input high-speed quaternary/octal/decimal/hexadecimal optical computing operations have been demonstrated. Operation speed up to 50 Gbaud of this computing approach is experimentally examined. The demonstrated M-ary optical computing using high base numbers may facilitate advanced data management and superior network performance.

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Section: For Inter-datamentioning

confidence: 99%

M-ary Optical Computing

Wang¹,

Long²

2017

Cloud Computing - Architecture and Applications

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“…The checksum also needs to be extended from binary to multi-bit encodings. Although binary half-and full-adders have been demonstrated [22], multi-bit adders, e.g., for M-PSK encodings, are currently limited to modular arithmetic [41]. Extending these to a full-adder requires concurrent carry-out generation, resulting in a half-adder, and composition of multi-bit half-adders to create a multi-bit full-adder.…”

Section: Discussionmentioning

confidence: 99%

A Design for an Internet Router with a Digital Optical Data Plane

et al. 2017

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This paper presents a complete design for an optical Internet router based on the component steps required for Internet protocol (IP) packet forwarding. Implementations of hop count decrement and header matching are integrated with a simulation-based approach to variable-length packet traffic merging that avoids recirculation, demonstrating an approach for an all-optical data plane. A method for IPv4 checksum computation is introduced, and this and previously designed components are extended from binary to higher-density (multiple bits per symbol) encodings. The implications of this design are considered, including the potential for chip-level and system integration, as well as the requirements of basic optical processing components.

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“…The large size of the bulk materials and lumped components, having a feature size of several centimeters, limits the practical on-chip integration applications [12,13]. There are some more recent works on optical logic-/computing-related applications on different platforms, including fiber pigtail cross-section coated with a single-layer graphene [14,15], silicon-organic hybrid slot waveguide [16], and nonlinear devices [17][18][19]. Subsequently, plenty of schemes have been proposed to demonstrate nanoscale all-optical logic adder based on third-order nonlinear optical effects (including cross-phase modulation) [20][21][22][23][24], cross-gain modulation [25][26][27], and four wave mixing [28][29][30][31][32], or linear interference mechanism [33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Ultracompact all-optical full-adder and half-adder based on nonlinear plasmonic nanocavities

Xie

Niu

et al. 2017

Nanophotonics

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Ultracompact chip-integrated all-optical halfand full-adders are realized based on signal-light induced plasmonic-nanocavity-modes shift in a planar plasmonic microstructure covered with a nonlinear nanocomposite layer, which can be directly integrated into plasmonic circuits. Tremendous nonlinear enhancement is obtained for the nanocomposite cover layer, attributed to resonant excitation, slow light effect, as well as field enhancement effect provided by the plasmonic nanocavity. The feature size of the device is <15 μm, which is reduced by three orders of magnitude compared with previous reports. The operating threshold power is determined to be 300 μW (corresponding to a threshold intensity of 7.8 MW/cm 2 ), which is reduced by two orders of magnitude compared with previous reports. The intensity contrast ratio between two output logic states, "1" and "0," is larger than 27 dB, which is among the highest values reported to date. Our work is the first to experimentally realize on-chip halfand full-adders based on nonlinear plasmonic nanocavities having an ultrasmall feature size, ultralow threshold power, and high intensity contrast ratio simultaneously.This work not only provides a platform for the study of nonlinear optics, but also paves a way to realize ultrahighspeed signal computing chips.

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High-speed addition/subtraction/complement/doubling of quaternary numbers using optical nonlinearities and DQPSK signals

Cited by 37 publications

References 14 publications

M-ary Optical Computing

M-ary Optical Computing

A Design for an Internet Router with a Digital Optical Data Plane

Ultracompact all-optical full-adder and half-adder based on nonlinear plasmonic nanocavities

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