All-optical ultrafast XOR/XNOR logic gates, binary counter, and double-bit comparator with silicon microring resonators

Sethi, Purnima; Roy, Sukhdev

doi:10.1364/ao.53.006527

Cited by 31 publications

(9 citation statements)

References 42 publications

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“…The characteristic switching times of such resonators are tens of picoseconds, while the consumed energies are larger than tens of picojoules. [ 212 ] On the other hand, PhCs are able to confine light in so smaller volumes that their switching energy and speed approach 400–600 aJ and 20–35 ps, respectively. [ 213 ] However, this scheme encounters a severe balance issue between switching energy and photon lifetime.…”

Section: On‐chip Photonic Applicationsmentioning

confidence: 99%

Hybrid/Integrated Silicon Photonics Based on 2D Materials in Optical Communication Nanosystems

You¹,

Luo²,

Yang³

et al. 2020

Laser & Photonics Reviews

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Silicon (Si) photonics have established as leading technologies in addressing the rapidly increasing demands of huge data transfer in optical communication systems with compact footprints, small power consumption, and ultradense bandwidth, which are driven by the next generation supercomputers and big data era. Particularly, Si photonics will penetrate into optical communication links at an ever-small scale, namely chip-to-chip and on-chip. However, the nanostructures made of Si with an indirect bandgap are not ideal candidates for on-chip light sources, modulators, and photodetectors, which most-frequently require optical materials with direct bandgap. Thanks to the advent of graphene, transition metal dichalcogenides and other two-dimensional (2D) materials, which can facilitate extraordinary progresses in improving device performance at the ultrathin scale, their integration with Si photonics furnishes a heterogeneous platform to construct fully functional and highly integrated photonic communication systems. In this work, the current advancements in the on-chip applications of Si photonics-2D materials heterostructures, inclusive of all essential chip-scale modules and integrated circuits, as well as the future prospective and challenges are reviewed and discussed. The present study sets out to objectively measure the feasibility of the hybrid integration between Si photonics and 2D materials in on-chip optical communications and the advanced applications beyond.

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Section: On‐chip Photonic Applicationsmentioning

confidence: 99%

Hybrid/Integrated Silicon Photonics Based on 2D Materials in Optical Communication Nanosystems

You¹,

Luo²,

Yang³

et al. 2020

Laser & Photonics Reviews

View full text Add to dashboard Cite

show abstract

“…This circuit presents the most compact design for an optical bitwise comparator, simply using N disks for an N -bit equality comparison, and an additional N disks for the greater/less than functionality. Previously reported microresonator-based bitwise comparator designs use 59 rings (plus an OE conversion) for a 4-bit operation 31 and 17 rings for a 2-bit operation 34 .…”

Section: Higher-order Logicmentioning

confidence: 99%

Ultracompact CMOS-compatible optical logic using carrier depletion in microdisk resonators

Gostimirovic

2017

Sci Rep

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We present a CMOS-compatible optoelectronic directed logic architecture that achieves high computational throughput (number of operations per second per unit area) by its ultracompact form factor. High speed-to-power performance is also achieved, by the low capacitance and high junction-to-mode overlap of low-radii SOI vertical pn junction microdisk switches. By using wavelength-division multiplexing and two electrical control signals per disk, each switch performs (N)OR, (N)AND, and X(N)OR operations simultaneously. Connecting multiple switches together, we demonstrate higher-order scalability in five fundamental N-bit logic circuits: AND/OR gates, adders, comparators, encoders, and decoders. To the best of our knowledge, these circuits achieve the lowest footprint of silicon-based multigigabit-per-second optical logic devices in literature.

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“…Accordingly, the re ected light signal is switching from ON to OFF with sub-femtosecond resolution. This demonstration paves the way to establish ultrafast optical switches with petahertz (1.1 PHz) speeds beyond the state-of-the-art advancement of demonstrated optical switching [19][20][21][22][23][24][25][26][27][28][29][30][31] . Moreover, using complex synthesized light eld waveforms to alter the re ectivity of the dielectric enables one to control the switching signal and allows the digital binary encoding with the petahertz speed.…”

Section: Introductionmentioning

confidence: 99%

Attosecond Optical Switching

Hassan

Ding

Alqattan

et al. 2022

Preprint

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Modern electronics are founded on switching the electric signal by radio frequency (RF) electromagnetic fields on the nanosecond timescale, limiting the information processing to the gigahertz speed. Recently, optical switches have been demonstrated using terahertz and ultrafast laser pulses to control the electric signal and enhance the switching speed to the picosecond and a few hundred femtoseconds time scale. Here, we exploit the reflectivity modulation of the fused silica dielectric system in a strong light field to demonstrate the optical switching (ON/OFF) with attosecond time resolution. Moreover, we present the capability of controlling the optical switching signal with complex synthesized fields of ultrashort laser pulses for data binary encoding. This work paves the way for establishing optical switches and light-based electronics with petahertz speeds, several orders of magnitude faster than the current semiconductor-based electronics, opening a new realm in information technology, optical communications, and photonic processor technologies.

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All-optical ultrafast XOR/XNOR logic gates, binary counter, and double-bit comparator with silicon microring resonators

Cited by 31 publications

References 42 publications

Hybrid/Integrated Silicon Photonics Based on 2D Materials in Optical Communication Nanosystems

Hybrid/Integrated Silicon Photonics Based on 2D Materials in Optical Communication Nanosystems

Ultracompact CMOS-compatible optical logic using carrier depletion in microdisk resonators

Attosecond Optical Switching

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