Sequential Operations of Quantum Dot/Photonic Crystal All-Optical Switch With High Repetitive Frequency Pumping

Kitagawa, Yoshinori; Ozaki, Nobuhiko; Takata, Yoshiaki; Ikeda, Naoki; Watanabe, Yoshinori; Sugimoto, Yoshimasa; Asakawa, Kiyoshi

doi:10.1109/jlt.2008.2005270

Cited by 25 publications

(7 citation statements)

References 9 publications

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“…This parameter is the crucial and can impose the strict limitation on the performance of the gate, which can severely alter the pattern effect observed on the switched-out pulses. For this reason quan- tum dot SOAs can be used for complex gain recovery enhancement technology, to reduce carrier life time [38].…”

Section: Parametersmentioning

confidence: 99%

Eliminating the additional input beam in all-optical XOR gate using Terahertz Optical Asymmetric Demultiplexer (TOAD) based interferometer: A theoretical analysis

Chattopadhyay¹

2011

Optik

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Section: Parametersmentioning

confidence: 99%

Eliminating the additional input beam in all-optical XOR gate using Terahertz Optical Asymmetric Demultiplexer (TOAD) based interferometer: A theoretical analysis

Chattopadhyay¹

2011

Optik

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“…So this parameter is the most crucial and can impose the strict limitation on the performance of the gate, which can be severely alter the pattern effect observed on the switched-out pulses. For this reason quantum dot SOAs can be used for complex gain recovery enhancement technology, to reduce carrier life time [39]. SOA based gates have the advantages of requiring a very low switching energy (<1 pJ per pulse [40]), high band width and more compact in size.…”

Section: Resultsmentioning

confidence: 99%

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

Gayen¹,

Chattopadhyay²,

Pal

et al. 2010

J Comput Electron

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An all-optical two 2-bit numbers multiplication with the help of Semiconductor Optical Amplifier (SOA)-assisted Sagnac Switch is proposed and described. The paper describes the multiplication using a set of all-optical half-adder and AND gate. Because of the lack of fast, accurate, and large dynamic range analog-to-digital converter, optical implementation of the digital multiplication through analog convolution algorithm yields a slow digital multiplier. By using a set of optical half-adder and optical AND, a new optical fast digital multiplication method is proposed. The new method promises both higher processing speed and accuracy. Numerical simulation result confirming described methods and conclusion are given in this paper.

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“…A π phase shift was achieved with a net control pulse energy less than 100 fJ/pulse, which is more than three orders of magnitude lower than that for the ridge waveguide devices using bare QDs, since the field enhancement and slow light effect lead to high optical nonlinearity in photonic crystal waveguides [37]. Multiple pulse operation using QD MZ switch has been recently reported with a pulse repetition rate of 40 GHz [103].…”

Section: Phase Nonlinearitymentioning

confidence: 95%

Photonic switching devices based on semiconductor nano-structures

Jin¹,

Wada²

2014

J. Phys. D: Appl. Phys.

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Abstract:Focusing and guiding light into semiconductor nanostructures can deliver revolutionary concepts for photonic devices, which offer a practical pathway towards next-generation power-efficient optical networks. In this review, we consider the prospects for photonic switches using semiconductor quantum dots (QDs) and photonic cavities which possess unique properties based on their low dimensionality. The optical nonlinearity of such photonic switches is theoretically analysed by introducing the concept of a field enhancement factor. This approach reveals drastic improvement in both power-density and speed, which is able to overcome the limitations that have beset conventional photonic switches for decades. In addition, the overall power consumption is reduced due to the atom-like nature of QDs as well as the nano-scale footprint of photonic cavities. Based on this theoretical perspective, the current state-of-the-art of QD/cavity switches is reviewed in terms of various optical nonlinearity phenomena which have been utilized to demonstrate photonic switching. Emerging techniques, enabled by cavity nonlinear effects such as wavelength tuning, Purcell-factor tuning and plasmonic effects are also discussed.

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Sequential Operations of Quantum Dot/Photonic Crystal All-Optical Switch With High Repetitive Frequency Pumping

Cited by 25 publications

References 9 publications

Eliminating the additional input beam in all-optical XOR gate using Terahertz Optical Asymmetric Demultiplexer (TOAD) based interferometer: A theoretical analysis

Eliminating the additional input beam in all-optical XOR gate using Terahertz Optical Asymmetric Demultiplexer (TOAD) based interferometer: A theoretical analysis

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

Photonic switching devices based on semiconductor nano-structures

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