All-optical logic gates based on wavelength conversion in a nonlinear directional coupler

Li, Qiliang; Zhang, Zhen; Li, Shuqin; Hu, Miao; Wei, Yizhen; Lü, Yang

doi:10.1016/j.optcom.2015.05.061

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…Further, by varying the power of 𝑃 1 and 𝑃 2 an alternative logic gates can be designed. Figure 4a depicts the Xratio level as a function of pump power is calculated using equation (11). Initially, 𝐵 10 = 1 mW, 𝐵 20 = 0, and 𝑃 2 = 0 is assumed.…”

Section: Fig 2 Xpm Effect Based Directional Couplers Generating the S...mentioning

confidence: 99%

“…To meet the increasing demand for high-speed communications, researchers are replacing traditional electrical components with optical switching components, utilizing fundamental building blocks such as AND, OR, NOT, XOR, and XNOR logic gates. A variety of devices, including the Mach-Zehnder Interferometer (MZI) [1], Micro-ring Resonator (MRR) [2], Surface Plasmon Resonance (SPR) [3], Fiber Bragg grating (FBG) [4], Photonic Crystal Waveguide (PCW) [5], and Directional Coupler [6][7][8][9][10][11], are available for constructing All-optical logic gates and switches. Photonic switching involves manipulating optical signals between different modes, relying on the intensity-dependent dynamics of the optical beam.…”

Section: Introductionmentioning

confidence: 99%

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Harnessing XPM effects in non-linear directional couplers for 4-bit gray code conversion and even parity verification

Yadav,

Kumar,

Prakash

2024

Journal of Electrical Engineering

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The all-optical switching phenomena in the non-linear directional coupler using cross-phase modulation (XPM) effect have been proposed. It is designed to generate an all-optical XOR functionality, considering the XOR logic gates as a basic module the design and analysis of an efficient all-optical 4-bit binary to gray code converter and 4-bit even parity checker circuit is proposed. The design methodology includes the switching of a weak continuous-wave (CW) signal, which is controlled by the combination of two controlled pump signals. In this paper, mathematical analysis of the coupled mode theory associated with optical directional couplers has been discussed. The switching characteristics of XPM effect based All-optical directional couplers have been examined for appropriate values of the controlled pump signals. Appropriate values of extinction ratio and corresponding controlled pump signal levels are investigated for an efficient generation of XOR logic gates. Further, the detailed analysis of layout generation and design aspects of All-optical 4-bit binary to gray code converter and 4-bit even parity checker circuits have been carried out. The proposed methodology is verified by the appropriate simulation results, which include the transmittivity, extinction ratio (Xratio) curve variation and dynamic time domain plot associated with proposed units.

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Section: Fig 2 Xpm Effect Based Directional Couplers Generating the S...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Harnessing XPM effects in non-linear directional couplers for 4-bit gray code conversion and even parity verification

Yadav,

Kumar,

Prakash

2024

Journal of Electrical Engineering

View full text Add to dashboard Cite

show abstract

Design and analysis of all-optical half and full adder/subtractor using nonlinear asymmetric directional couplers

Yadav

Kumar

Prakash

2023

Optik

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All-optical logic gates based on wavelength conversion in a nonlinear directional coupler

Cited by 2 publications

References 23 publications

Harnessing XPM effects in non-linear directional couplers for 4-bit gray code conversion and even parity verification

Harnessing XPM effects in non-linear directional couplers for 4-bit gray code conversion and even parity verification

Design and analysis of all-optical half and full adder/subtractor using nonlinear asymmetric directional couplers

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