Photonic crystal logic gates: an overview

Salmanpour, Aryan; Mohammadnejad, Shahram; Bahrami, Ali

doi:10.1007/s11082-014-0102-1

Cited by 91 publications

(25 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 because the experimental design has a smaller T A . But, an SL of a few dB is still much smaller than in any other previous reports [8][9][10][11][12][13][14][15] . Figure 5c overlaps time waveforms of the AND operations of seven different λ (1535, 1540, 1545, 1550, 1555, 1560, and 1565 nm) denoted by the dots in Fig.…”

Section: Resultscontrasting

confidence: 65%

“…Various platforms (e.g., plasmonics [9][10][11][12] , photonic crystals 13,14 , and metasurfaces [15][16][17] , etc.) are now available for forming Ψ gates.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, there have been several proposals and some experimental demonstrations of optical logic operations employing linear optical components [7][8][9][10][11][12][13][14][15][16][17] . For example, a simple beam splitter can perform various types of approximate Boolean logic gates as a result of optical interference.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Ultrashort low-loss Ψ gates for linear optical logic on Si photonics platform

et al. 2020

View full text Add to dashboard Cite

Nonlinear optical gates are usually considered as fundamental building blocks for universal optical computation. However, the performance is severely limited by small optical nonlinearity, thereby bounding their operation speed, consumption energy, and device size. In this paper, we propose and experimentally demonstrate linear optical logic operations with 3 μm-long Si wire "Ψ" gates consist of 3 × 1 optical combiners including auxiliary bias port, which maximizes the binary contrast of the output in telecom wavelength. We have demonstrated 20 Gbps Boolean "AND" operation with experimentally measured small signal loss (1.6 dB experimentally). A single Ψ gate can perform representative Boolean operations by changing the bias power and relative phases. We have also demonstrated wavelengthindependent operation by seven wavelengths, which leads to wavelength-division multiplexed parallel computation. This ultrashort, highly-integrable, low-loss, and energy-efficient optical logic gates pave the way for ultralow latency optical pattern matching, recognition, and conversion.

show abstract

Section: Resultscontrasting

confidence: 65%

“…Various platforms (e.g., plasmonics [9][10][11][12] , photonic crystals 13,14 , and metasurfaces [15][16][17] , etc.) are now available for forming Ψ gates.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Ultrashort low-loss Ψ gates for linear optical logic on Si photonics platform

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Photonic crystals are periodic structures that provide a photonic bandgap (PBG) specifying a frequency region where no propagating electromagnetic wave exists. Band gapbased PCs have a wide range of applications that can revolutionize the technology and industry [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

A novel proposal based on 2D linear resonant cavity photonic crystals for all-optical NOT, XOR and XNOR logic gates

Elhachemi

Naoum

2020

Journal of Optical Communications

View full text Add to dashboard Cite

In this paper, we are going to propose a novel structure of all-optical NOT, XOR and XNOR logic gates are presented using a two-dimensional photonic crystal (2D-PhC). This structure is optimized by varying the radius of the cavity, to obtain a quality factor Q = 1192, and also has several ports of entry and one port of output. The size of each structure is equal to 85.8 μm2. The contrast ratios for the structures proposed all-optical NOT, XOR and XNOR logic gates between levels “0” and “1” are, respectively, 25.08, 25.03, and 14.47 dB. The response time for the three logical gates is 8.33 ps, and the bit rate is calculated at about 0.12 Tbit/s, all simulations are based on both numerical methods such as finite difference time domain (FDTD) and plane wave expansion (PWE). Designed logic gates are characterized by low power consumption, compactness and easy integration.

show abstract

“…Nowadays, due to the increased data volumes and the need for higher processing speed, optical processors have been taken into account. To realise all-optical processing at the speed of terabytes per second, electronic devices must be replaced by the all-optical devices [1][2][3]. These devices include filters [4], optical sensors [5], demultiplexers [6], logic gates [7,8], and so on.…”

Section: Introductionmentioning

confidence: 99%