Theoretical analysis of all-optical clocked D flip-flop using a single SOA assisted symmetric MZI

Chattopadhyay, Tanay; Reis, C.; André, Paulo S.; Teixeira, A.

doi:10.1016/j.optcom.2011.12.103

Cited by 35 publications

(6 citation statements)

References 28 publications

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“…The optical flip-flop is one of the important building blocks for optical counters and optical memory needed for photonic integrated circuits (PICs), and optical communication systems. Optical flip-flop can be constructed by using different methods such as using a single Semiconductor Optical Amplifier-Mach-Zehnder Interferometer (SOA-MZI) [16], based on multimode interference photonic crystal waveguides [17], kerr nonlinear PhC [18] with micro-cavities based on 2D heterostructure and PhC based flip-flop [19]. PhC based flip-flop has solutions for optical flip-flops which have difficulties such as switching speed, size and contrast ratio.…”

Section: Introductionmentioning

confidence: 99%

Design of two-dimensional photonic crystal based ultra compact optical RS flip-flop

Soma

Sonth²,

Gowre³

2021

Photon Netw Commun

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The presented research deals with designing of a new ultra compact all-optical RS flip-flop on a two-dimensional (2-D) hexagonal photonic crystal platform. The flip-flop is designed by using two NOR gates, photonic crystal waveguides, four silicon ring resonators, four input ports and two output ports. The designed flip-flop structure has hexagonal silicon rods in the air host with a lattice constant a of 630 nm. Si rods have a radius of 0.2a and operating waveleangth of 1550 nm. The novel design provides proper distinction between logic 1 and logic 0 at the output by giving 8.7 dB and 4 dB contrast ratio at Q and Qbar output, respectively. Furthermore, uncomplicated structure resulting in small dimension of 28 μm * 28 μm makes it appropriate for optical integrated circuit in optical networks. FDTD method is used to model the proposed structure and simulated using RSoft FullWAVE simulator tool.

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Section: Introductionmentioning

confidence: 99%

Design of two-dimensional photonic crystal based ultra compact optical RS flip-flop

Soma

Sonth²,

Gowre³

2021

Photon Netw Commun

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“…All-optical flip-flop [5][6][7][8] is the basic processing unit in the optical signal processing devices. Through a combination between the various flip-flops, it can achieve a variety of high-speed optical signal processing functions.…”

Section: Introductionmentioning

confidence: 99%

“…It described four different types of flip-flops. In [9], a set-reset all-optical flip-flop based on Mach-Zehnder interferometer (MZI) [5][6][7] of SOA was proposed. All-optical flip-flop memory based on two coupled polarization switches was proposed in [10].…”

Section: Introductionmentioning

confidence: 99%

All-optical flip-flop based on coupled SOA-PSW

Wang

et al. 2016

Photonic Sens

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Abstract:The semiconductor optical amplifier (SOA) has obvious advantages in all-optical signal processing, because of the simple structure, strong non-linearity, and easy integration. A variety of all-optical signal processing functions, such as all-optical wavelength conversion, all-optical logic gates and all-optical sampling, can be completed by SOA. So the SOA has been widespread concerned in the field of all-optical signal processing. Recently, the polarization rotation effect of SOA is receiving considerable interest, and many researchers have launched numerous research work utilizing this effect. In this paper, a new all-optical flip-flop structure using polarization switch (PSW) based on polarization rotation effect of SOA is presented.

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“…Mach-Zehnder interferometer is a kind of very attractive device due to its extensive applications in photonics [16,17], biosensors [18,19], logical operations [20][21][22][23][24], optical communication [25,26], and memory device [27,28]. Hence, Mach-Zehnder interferometer has attracted a lot of interests from scientists and engineers.…”

Section: Introductionmentioning

confidence: 99%