20 Gb/s all-optical XOR with UNI gate

Bintjas, C.; Kalyvas, M.; Theophilopoulos, G.; Stathopoulos, T.; Avramopoulos, H.; Occhi, L.; Schares, Laurent; Guekos, G.; Hansmann, S.; Dall’Ara, R.

doi:10.1109/68.853516

Cited by 126 publications

(56 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Clearly, the gates should operate at high bit rate to be competitive to their electronic counterparts. High-speed XOR gates based on loop and UNI configurations are reported in [86] and [87], while integrated versions based on XPM gates are reported in [88] and [89]. The function of the XPM gate used as an XOR gate is shown schematically in Fig.…”

Section: All-optical Logical Gatesmentioning

confidence: 99%

Semiconductor optical amplifier-based all-optical gates for high-speed optical processing

Stubkjaer

2000

IEEE J. Select. Topics Quantum Electron.

455

161

View full text Add to dashboard Cite

Abstract-Semiconductor optical amplifiers are useful building blocks for all-optical gates as wavelength converters and OTDM demultiplexers. This paper reviews the progress from simple gates using cross-gain modulation and four-wave mixing to the integrated interferometric gates using cross-phase modulation. These gates are very efficient for high-speed signal processing and will open up interesting new areas, such as all-optical regeneration and high-speed all-optical logic functions.Index Terms-Add/drop multiplexer, optical gate, optical processing, semiconductor optical amplifier, wavelength converter.

show abstract

Section: All-optical Logical Gatesmentioning

confidence: 99%

Semiconductor optical amplifier-based all-optical gates for high-speed optical processing

Stubkjaer

2000

IEEE J. Select. Topics Quantum Electron.

455

161

View full text Add to dashboard Cite

show abstract

“…However, the fiber nonlinearity is rather weak, requiring long pieces of fiber, making the devices difficult to integrate and their switching energies high. It was the realization that fast phase variations can also be obtained in semiconductor media (SOA), as a result of the gain and refractive-index dependence on the carrier density, which has more recently sparked off the development of compact and very low switching energy devices [12], [15]- [18]. These can be broadly separated to either discrete SOA interferometric gates or integrated devices.…”

Section: B All-optical Logic Modulesmentioning

confidence: 99%

“…Multiwavelength operation has been achieved for ten simultaneously mode-locked channels at a 30-GHz repetition rate each [29]. Following this, we describe the principle of operation of semiconductor-based interferometric arrangements, capable of performing bitwise processing, and we demonstrate all-optical AND logic and XOR Boolean logic at 20 Gb/s, using the Sagnac and the ultrafast nonlinear interferometer (UNI), respectively [15]. Given that interferometric gates require signal synchronization to operate, clock-recovery units are of paramount importance.…”

mentioning

confidence: 99%

Ultrafast time-domain technology and its application in all-optical signal processing

Vlachos¹,

Pleros

Bintjas

et al. 2003

J. Lightwave Technol.

Self Cite

View full text Add to dashboard Cite

Abstract-In this paper, we review recent advances in ultrafast optical time-domain technology with emphasis on the use in optical packet switching. In this respect, several key building blocks, including high-rate laser sources applicable to any time-division-multiplexing (TDM) application, optical logic circuits for bitwise processing, and clock-recovery circuits for timing synchronization with both synchronous and asynchronous data traffic, are described in detail. The circuits take advantage of the ultrafast nonlinear transfer function of semiconductor-based devices to operate successfully at rates beyond 10 Gb/s. We also demonstrate two more complex circuits-a header extraction unit and an exchange-bypass switch-operating at 10 Gb/s. These two units are key blocks for any general-purpose packet routing/switching application. Finally, we discuss the system perspective of all these modules and propose their possible incorporation in a packet switch architecture to provide low-level but high-speed functionalities. The goal is to perform as many operations as possible in the optical domain to increase node throughput and to alleviate the network from unwanted and expensive optical-electrical-optical conversions.Index Terms-Exchange-bypass switch, interferometric gates, optical switching, optical time-division multiplexing (OTDM), packet switching, optical signal processing, semiconductor optical amplifier (SOA).

show abstract

“…In recent years, some prevalent optical logic gates systems have been studied which are Mach-Zehnder interferometer (MZI) [3,4], dual semiconductor-optical amplifier (SOA) [1], and ultrafast nonlinear interferometer (UNI) [5]. In this work, operation of XOR logic gates based on two-photon absorption (TPA) and its induced free carrier effects (FCE) is investigated.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of XOR Logic Gate Based on Two-Photon Absorption

et al. 2016

View full text Add to dashboard Cite

Abstract. Two-photon absorption with high intensity pump beam occurs in a SOA depends on fast phase change of a weak probe signal. This work analysed optical XOR logic function using two-photon absorption induced fast phase change. A rate equation for SOA and both input data signals A and B with high intensity, configured in the form of MZI has also been proved. The model shows that XOR operation at 10 Gb/s with good signal to noise ratio is obtained with high input intensities. The result on the generation of XOR indicates that operations on 10 Gb/s with a high signal to noise ratio can easily be implemented. The average input power into the SOA is 20 dbm corresponding to the peak power of 5.5 dBm at 10 Gb/s when the width of the input pulse 3.6 ps. The short narrow pulse width is utilised in the study for stronger effect of two-photon absorption.

show abstract

20 Gb/s all-optical XOR with UNI gate

Cited by 126 publications

References 14 publications

Semiconductor optical amplifier-based all-optical gates for high-speed optical processing

Semiconductor optical amplifier-based all-optical gates for high-speed optical processing

Ultrafast time-domain technology and its application in all-optical signal processing

Design and Analysis of XOR Logic Gate Based on Two-Photon Absorption

Contact Info

Product

Resources

About