All-optical Multiplication with the help of Semiconductor Optical Amplifier—assisted Sagnac Switch

Gayen, Dilip Kumar; Chattopadhyay, Tanay; Pal, Rajat Kumar; Roy, Jitendra Nath

doi:10.1007/s10825-010-0305-z

Cited by 19 publications

(5 citation statements)

References 48 publications

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“…The AND, NOR, and XNOR logic functions have numerous very useful applications in digital systems. In particular, the AND gate is one of the important fundamental Boolean functions that is practically involved in numerous optical domain tasks, such as buffering [34], address comparison [35], add-drop multiplexing [36], packet clock and data recovery [37], packet header and payload separation [38], binary pattern recognition [39], binary counting [40], analogto-digital conversion [41], digital encoding and comparison [42], data regeneration [43], waveform sampling [44], half addition [45], multiplication [46], construction of other logic gates [47], and design of combinational logic circuits [48]. AO NOR and XNOR gates, which are so-called 'universal gates', are also widely involved in various optical tasks.…”

Section: Resultsmentioning

confidence: 99%

All-optical multifunctional AND, NOR, and XNOR logic gates using semiconductor optical amplifiers

Kotb

Chen

2020

Phys. Scr.

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We theoretically analyze the performance of all-optical multifunctional AND, NOT-OR (NOR), and exclusive-NOR (XNOR) logic gates at 80 Gb s−1 using return-to-zero data format in a compact scheme based on semiconductor optical amplifiers (SOAs). The AND logic gate is formed by incorporating two SOAs in a Mach–Zehnder interferometer and the NOR logic gate is formed using a single SOA followed by a series delayed interferometer. Then an additional logic gate, XNOR, is realized by by the combination of the AND and NOR output logic channels. Therefore, three logic operations are performed using a compact scheme within few resources. The quality factor (QF) of the considered Boolean functions against the key operational parameters of the input data and SOA is examined, considering the effects of the amplified spontaneous emission, operating temperature, and phase noise for more realistic results. The results of Wolfram Mathematica show that three logic functions, AND, NOR, and XNOR, can simultaneously be realized at 80 Gb s−1 using the employed compact scheme with high QF.

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Section: Resultsmentioning

confidence: 99%

All-optical multifunctional AND, NOR, and XNOR logic gates using semiconductor optical amplifiers

Kotb

Chen

2020

Phys. Scr.

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“…Using silicon instead of silicon nitride can further reduce the device footprint to increase the computing density 62 . Besides MAC operation, the equally important computing processes of applying nonlinear functions and pooling can also be achieved optically by using elements such as nonlinear optical resonators, modulators, and amplifiers 27 , 28 , 63 . Alternatively, a hybrid photonic-electronic system may optimally balance energy-efficiency and speed advantages of photonic systems, while realizing flexible non-linearity, connectivity, and training precision using microelectronics 26 , 64 , 65 .…”

Section: Discussionmentioning

confidence: 99%

Programmable phase-change metasurfaces on waveguides for multimode photonic convolutional neural network

et al. 2021

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Neuromorphic photonics has recently emerged as a promising hardware accelerator, with significant potential speed and energy advantages over digital electronics for machine learning algorithms, such as neural networks of various types. Integrated photonic networks are particularly powerful in performing analog computing of matrix-vector multiplication (MVM) as they afford unparalleled speed and bandwidth density for data transmission. Incorporating nonvolatile phase-change materials in integrated photonic devices enables indispensable programming and in-memory computing capabilities for on-chip optical computing. Here, we demonstrate a multimode photonic computing core consisting of an array of programable mode converters based on on-waveguide metasurfaces made of phase-change materials. The programmable converters utilize the refractive index change of the phase-change material Ge2Sb2Te5 during phase transition to control the waveguide spatial modes with a very high precision of up to 64 levels in modal contrast. This contrast is used to represent the matrix elements, with 6-bit resolution and both positive and negative values, to perform MVM computation in neural network algorithms. We demonstrate a prototypical optical convolutional neural network that can perform image processing and recognition tasks with high accuracy. With a broad operation bandwidth and a compact device footprint, the demonstrated multimode photonic core is promising toward large-scale photonic neural networks with ultrahigh computation throughputs.

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“…Design of all-optical multiplication technique with non-linear medium has been demonstrated (Mukhopadhyay et al 2001). An all-optical 2-bit multiplication using Semiconductor optical amplifier (SOA)-assisted Sagnac Switch has been implemented using an optical half adder and optical AND gate (Gayen et al 2010). An exclusive scheme to implement an all-optical AND logic gate and half adder circuit which are the primary building blocks of the multiplier circuit using non-linear shifting operation and frequency conversion properties of semiconductor optical amplifier (SOA) (Mandal et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Implementation of 2-bit multiplier based on electro-optic effect in Mach–Zehnder interferometers

et al. 2015

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This paper demonstrates the structure and working principle of an optical 2-bit multiplier using lithium niobate (LiNbO 3 ) based Mach-Zehnder interferometer (MZI). The powerful ability of MZI structures to switch the optical signal from one output port to the other output port has been used in the implementation of the proposed 2-bit multiplier. The paper constitutes the mathematical description of the 2-bit multiplier and thereafter compilation using MATLAB. The study is carried out by simulating the proposed device with Beam propagation method (BPM).

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All-optical Multiplication with the help of Semiconductor Optical Amplifier—assisted Sagnac Switch

Cited by 19 publications

References 48 publications

All-optical multifunctional AND, NOR, and XNOR logic gates using semiconductor optical amplifiers

All-optical multifunctional AND, NOR, and XNOR logic gates using semiconductor optical amplifiers

Programmable phase-change metasurfaces on waveguides for multimode photonic convolutional neural network

Implementation of 2-bit multiplier based on electro-optic effect in Mach–Zehnder interferometers

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