All-optical binary flip-flop with the help of Terahertz Optical Asymmetric Demultiplexer

Maity, Goutam Kumar; Chattopadhyay, Tanay; Gayen, Dilip Kumar; Taraphdar, Chinmoy; Maiti, Anup Kumar; Maity, Santi P.; Roy, Jitendra Nath

doi:10.1007/s11047-009-9162-8

Cited by 29 publications

(16 citation statements)

References 39 publications

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“…[1][2][3] . TOAD and semiconductor optical amplifier (SOA)-assisted gates effectively combine fast switching time and benefits of reasonable noise figure [4][5][6][7][8][9][10] . The all-optical frequency divider using TOAD based D flip-flop is designed in a configuration exactly like the standard electronic setup.…”

Section: Introductionmentioning

confidence: 99%

All-optical Frequency Divider using TOAD based D-Flip-Flop

Mandal¹

2021

IJMTST

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From the last few decades the optical communication has been established as much easier process than electrical communication. Many optical proposed circuits have already been suggested in many fields in support of this. The optical communication circuits demand frequency dividers capable of operating well above 10 GHz. Here, an all-optical frequency divider using terahertz optical asymmetric demultiplexer (TOAD) based D-flip-flop is proposed in the optical domain in a configuration exactly like the standard electronic setup. It presents a high-speed flip-flop-based frequency divider incorporating a new high-speed latch topology with satisfactory performance. The proposed all-optical frequency division scheme has been theoretically demonstrated in this paper. In this scheme the input and output binary digits are expressed as the presence (1) and the absence (0) of the light pulses. The performance of this proposed optical realization is evaluated by numerical simulation that confirms its feasibility in terms of the choice of the critical parameters.

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Section: Introductionmentioning

confidence: 99%

All-optical Frequency Divider using TOAD based D-Flip-Flop

Mandal¹

2021

IJMTST

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“…Nowadays, All-optical flip-flop is an essential component for latching functions in ultrahigh speed all-optical processing applications (1,2) . Currently, many systems such as a terahertz optical asymmetric de-multiplex (TOAD) (3) , semiconductor optical amplifier (4) , Fabry-Perot laser diode (5) , ring lasers (6) , photonic crystals (7,8) , DBR laser diode (9) have been proposed. In this paper, we have presented an all-optical flip-flop system for logical processing operation and arithmetic operation base tree architecture, which can be used for an electronic circuit replacement, which can be replaced used for an electronic circuit (10)(11)(12)(13) by using dark-bright soliton pulses conversion control (14)(15) , the theoretical background is also reviewed.…”

Section: Introductionmentioning

confidence: 99%

All-Optical Basic Arithmetic Elements using Dark-Bright Solitons Conversion Control

Mitatha

Luangxaysana

Yupapin

2014

Proceedings of the 2nd International Conference on Intelligent Systems and Image Processing 2014

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In this paper, we propose a new design for all-optical basic arithmetic elements using optical technique namely dark-bright solitons conversion control within an optical add-drop filter. In operation, all-optical data input logic '0', '1' is formed by dark soliton (D) and bright soliton (B) pulses, respectively. The conversion behaviour between dark and bright soliton pulses can be obtained and formed the logic pulses by a π/2 phase shifted device such as an optical coupler, in which the binary logic operation can be formed simultaneously at the thought and drop ports, respectively. In all-optical NAND gate and S-R flip-flop application can be recognized as a simple and flexible system for forming the logic switching system. Numerical simulation results are obtained and confirmed for the useful application, in which the advanced logical system can be operated.

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“…Owing to these remarkable properties, it has been possible to successfully exploit the switching behavior of this module under pulsed operation 7 for signal processing exclusively in the optical domain and to demonstrate serial Boolean logic, 8 clock recovery, 9 demultiplexing, 10 binary-to-quaternary encoding/decoding, 11 multivalued logic, 12 data format conversion, 13 regeneration, 14 sampling, 15 header and payload separation, 16 buffering, 17,18 parallel Boolean logic and arithmetic operations, 19 modular arithmetic, 20 binary addition and subtraction, 21 and flip-flop memories. 22 One common characteristic of the aforementioned demonstrations, which has also affected the content of the relevant theoretical works, 5,23-32 is that they have focused on the intensity rather than on the phase transmission function of the switch. Nevertheless, the information contained in it, and in particular in its time derivative, should not be ignored, as it can be utilized in applications of optical communications and networks.…”

Section: Introductionmentioning

confidence: 99%

“…35,36 Furthermore, provided that it acquires the proper profile and magnitude by controlling the interferometric process while its counterpart introduced in a dispersive medium has the opposite direction, then their combination can compress the pulse on which it was initially imposed. 37 This technique could be exploited when the output from such a switch sets the operational state of another, identical one 11,12,[19][20][21][22]38 or is fed back to itself. 17,18 Under such circumstances, the narrower the gating pulses are, the better is the shape of the window inside which switching is possible 27 and hence the overall performance.…”

Section: Introductionmentioning

confidence: 99%

“…It should be noted that the main motives for carrying out the theoretical treatment on the SOA-assisted Sagnac switch have been the availability of related state-of-the-art only for this module, 34 the recent intense interest that it has attracted as core building unit in multistage interconnection architectures of enhanced functionality, 11,12,[19][20][21][22] and the authors' desire to preserve the continuity with their earlier relevant work. 4,5,8,17,32,39 Thus, there is not an absolute reason or restriction for this choice, and the method of analysis adopted here can also be followed for its counterpartsnamely, the Mach-Zehnder interferometer ͑MZI͒ 40 and the ultrafast nonlinear interferometer ͑UNI͒.…”

Section: Introductionmentioning

confidence: 99%

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Study on the instantaneous frequency deviation of pulses switched from semiconductor optical amplifier–assisted Sagnac interferometer

2010

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The instantaneous frequency deviation of the pulses switched from a semiconductor optical amplifier ͑SOA͒-assisted Sagnac interferometer is theoretically studied and analyzed. By using explicit expressions for the phase response and its temporal derivative and applying a numerical model, a set of curves is obtained that allows us to investigate and assess the dependence of the function of interest on the critical operational parameters. From their interpretation, the basic design rules that must govern them in order for its profile to acquire a form suitable for practical exploitation are extracted. These suggest that the combination of the energy of the driving control pulses and the small signal gain of the SOA must be such that the latter is biased to operate up to the medium saturation regime. Moreover, the width of these pulses must not exceed 10% of their allocated time slot, while the role of the loop asymmetry and the SOA carrier lifetime is found to be less significant. If these conditions are satisfied, then it is feasible to make out of most of the considered interferometric configuration's phase response variation per time increment while being employed as a switching module.

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All-optical binary flip-flop with the help of Terahertz Optical Asymmetric Demultiplexer

Cited by 29 publications

References 39 publications

All-optical Frequency Divider using TOAD based D-Flip-Flop

All-optical Frequency Divider using TOAD based D-Flip-Flop

All-Optical Basic Arithmetic Elements using Dark-Bright Solitons Conversion Control

Study on the instantaneous frequency deviation of pulses switched from semiconductor optical amplifier–assisted Sagnac interferometer

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