All-optical D flip-flop using single quantum-dot semiconductor optical amplifier assisted Mach–Zehnder interferometer

Gayen, Dilip Kumar; Chattopadhyay, Tanay; Zoiros, Kyriakos E.

doi:10.1007/s10825-014-0632-6

Cited by 21 publications

(4 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, both MRR and ODI restore the form of the PED, which has severely been degenerated into asymmetric sub-envelopes at the SOA output. This improvement is further quantified by the degree of eye opening (EOP) [68], which is higher for the MRR than for the ODI, i.e., 91% vs. 87%, respectively, for transmission in the same fiber length of 12 km. The zero detuning refers to the case that the notch of the filters is located away from the data carrier by so many spectral units as defined in Figure 5.…”

Section: Odi Vs Mrr Comparison: Results and Discussionmentioning

confidence: 99%

Comparison of Basic Notch Filters for Semiconductor Optical Amplifier Pattern Effect Mitigation

2017

View full text Add to dashboard Cite

Abstract:We conduct a thorough comparison of two basic notch filters employed to mitigate the pattern effect that manifests when semiconductor optical amplifiers (SOAs) serve linear amplification purposes. The filters are implemented using as the building architecture the optical delay interferometer (ODI) and the microring resonator (MRR). We formulate and follow a rational procedure, which involves identifying and applying the appropriate conditions for the filters' spectral response slope related to the SOA pattern effect suppression mechanism. We thus extract the values of the free spectral range and detuning of each filter, which allow one to equivocally realize the pursued comparison. We define suitable performance metrics and obtain simulation results for each filter. The quantitative comparison reveals that most employed metrics are better with the MRR than with the ODI. Although the difference in performance is small, it is sufficient to justify considering also using the MRR for the intended purpose. Finally, we concisely discuss practical implementation issues of these notch filters and further make a qualitative comparison between them in terms of their inherent advantages and disadvantages. This discussion reveals that each scheme has distinct features that render it appropriate for supporting SOA direct signal amplification applications with a suppressed pattern effect.

show abstract

Section: Odi Vs Mrr Comparison: Results and Discussionmentioning

confidence: 99%

Comparison of Basic Notch Filters for Semiconductor Optical Amplifier Pattern Effect Mitigation

2017

View full text Add to dashboard Cite

show abstract

“…By increasing the SOA injection current, the decrease in the nonlinear phase shift can be increased, but we can get a maximum 40 Gb/s unobstructed data rate. This indicates that owing to the employment of QD-SOAs, we can save at least 6 dB of power consumption, which otherwise would burden custom SOAs [49]. Also we use two orthogonally polarized lights as control and data signals in the MZI switch instead of different wavelengths because when using different wavelengths, we will require a wavelength converter, as both data and control signals here are generated from a single input source.…”

Section: Operation Principles Of An All-optical Simultaneous Half Addmentioning

confidence: 99%

Simultaneous all-optical basic arithmetic operations using QD-SOA-assisted Mach–Zehnder interferometer

Gayen¹,

Chattopadhyay²

2016

J Comput Electron

Self Cite

View full text Add to dashboard Cite

All-optical logic and arithmetic operations are expected to play an important role in high-speed communication systems. In this paper, we have presented a model to perform two basic arithmetic operations (addition/subtraction) on two binary digits based on a quantum dot semiconductor optical amplifier (QD-SOA)-assisted MachZehnder interferometer. Using two QD-SOA-based switches, we have designed a half adder/subtractor circuit. The main advantage of this circuit is that simultaneous addition and subtraction operations are realized at the outputs. This circuit is designed theoretically and verified through numerical simulations. The theoretical study is carried out by taking into account the effect of amplified spontaneous emission. The dependence of the peak data power and that of the QD-SOA current density and length on the ER and Q factor of the switching outcome are explored and assessed by means of numerical simulations. The desirable device parameters has been examined in order to obtain the optimum best performance.Keywords Quantum dot semiconductor optical amplifier · Mach-Zehnder interferometer · All-optical signal processing · All-optical arithmetic operation B Tanay Chattopadhyay

show abstract

“…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%

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

Wang

et al. 2016

Photonic Sens

View full text Add to dashboard Cite

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.

show abstract

All-optical D flip-flop using single quantum-dot semiconductor optical amplifier assisted Mach–Zehnder interferometer

Cited by 21 publications

References 52 publications

Comparison of Basic Notch Filters for Semiconductor Optical Amplifier Pattern Effect Mitigation

Comparison of Basic Notch Filters for Semiconductor Optical Amplifier Pattern Effect Mitigation

Simultaneous all-optical basic arithmetic operations using QD-SOA-assisted Mach–Zehnder interferometer

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

Contact Info

Product

Resources

About