All-Optical digital to analog converter using Tera Hertz Optical Asymmetric Demultiplexer based on quantum dot semiconductor optical amplifier

2021 ◽  
Vol 53 (5) ◽  
Author(s):  
Kousik Mukherjee ◽  
Siddhartha Dutta ◽  
Subhasish Roy ◽  
Kajal Majhi ◽  
Ashif Raja
Keyword(s):  
Quantum Dot ◽  
Semiconductor Optical Amplifier ◽  
Optical Amplifier ◽  
Digital To Analog Converter ◽  
All Optical ◽  
Analog Converter ◽  
Digital To Analog

Characteristics of All-optical Wavelength Conversion Based on Quantum-dot Semiconductor Optical Amplifier

2016 ◽  
Vol 45 (11) ◽  
pp. 1113002
Author(s):  
管磊 GUAN Lei ◽  
王卓然 WANG Zhuo-ran ◽  
袁国慧 YUAN Guo-hui ◽  
林志远 LIN Zhi-yuan ◽  
杨梦 YANG Meng
Keyword(s):  
Quantum Dot ◽  
Semiconductor Optical Amplifier ◽  
Wavelength Conversion ◽  
Optical Amplifier ◽  
Optical Wavelength ◽  
All Optical ◽  
Optical Wavelength Conversion

All-Optical Logic Gates Based on Quantum-Dot Semiconductor Optical Amplifier

2018 ◽  
Vol 27 (01n02) ◽  
pp. 1840013 ◽  
Author(s):  
Xiang Zhang ◽  
Sunil Thapa ◽  
Niloy K. Dutta
Keyword(s):  
Quantum Dot ◽  
Semiconductor Optical Amplifier ◽  
Logic Gates ◽  
Optical Amplifier ◽  
Boolean Logic ◽  
Photon Absorption ◽  
Hole Burning ◽  
Optical Logic ◽  
Logic Operation ◽  
All Optical

We propose a scheme to realize all-optical logic operation in quantum-dot semiconductor optical amplifier (QD-SOA) based Mach-Zehnder interferometer (MZI) considering the effects of two-photon absorption (TPA). During propagation of sub-picosecond pulses in QD-SOA, TPA leads to an additional change in carrier recovery dynamics in quantum-dots. We utilize a rate equation model to take into account carrier refill through TPA and nonlinear dynamics including carrier heating and spectral hole burning in the QD-SOA. The simulation results show the TPA induced pumping in the QD-SOA can reduce the pattern effect and increase the output quality of the all-optical logic operation. With TPA, this scheme is suitable for high speed Boolean logic operation at 320 Gb/s.

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