Femtosecond switching with semiconductor-optical-amplifier-based Symmetric Mach–Zehnder-type all-optical switch

2001 ◽  
Vol 78 (25) ◽  
pp. 3929-3931 ◽  
Author(s):  
Shigeru Nakamura ◽  
Yoshiyasu Ueno ◽  
Kazuhito Tajima
Keyword(s):  
Semiconductor Optical Amplifier ◽  
Optical Switch ◽  
Optical Amplifier ◽  
All Optical ◽  
All Optical Switch

scholarly journals Sub-picosecond all-optical switch using a multi-quantum-well semiconductor optical amplifier

2004 ◽  
Vol 236 (4-6) ◽  
pp. 329-334 ◽  
Author(s):  
X. Yang ◽  
A.K. Mishra ◽  
D. Lenstra ◽  
F.M. Huijskens ◽  
H. de Waardt ◽  
...  
Keyword(s):  
Quantum Well ◽  
Semiconductor Optical Amplifier ◽  
Optical Switch ◽  
Optical Amplifier ◽  
All Optical ◽  
All Optical Switch ◽  
Multi Quantum Well

scholarly journals Multichannel and Multistate All-Optical Switch Using Quantum-Dot and Sample-Grating Semiconductor Optical Amplifier

Electronics ◽  
2018 ◽  
Vol 7 (9) ◽  
pp. 166 ◽  
Author(s):  
Omar Qasaimeh
Keyword(s):  
Quantum Dot ◽  
Semiconductor Optical Amplifier ◽  
Optical Switch ◽  
Logic Gates ◽  
Optical Amplifier ◽  
Optical Logic ◽  
Hysteresis Width ◽  
Strongly Coupled ◽  
All Optical ◽  
All Optical Switch

A novel type of multichannel and multistate all-optical switch using a single sample-grating quantum-dot-distributed feedback semiconductor optical amplifier has been proposed and theoretically demonstrated. The multichannel device, which operates below threshold, utilizes cross-gain modulation and the sample-grating technique. The multichannel outputs are strongly coupled and are utilized to get multistability at several wavelength channels. Three logic states can be obtained when the inputs are properly detuned to the sample-grating comb modes. The three logic states, which exhibit reasonable gain, are separated by wide hysteresis width and can be tuned to a different wavelength channels. The device characteristics are very useful for building all-optical logic gates, flip-flops, and decision circuits.

Frequency Encoded All Optical Tri-state Logic Gates NOT and NAND Using Semiconductor Optical Amplifier Based Interferometric Switches

2020 ◽  
Vol 10 (4) ◽  
pp. 369-380
Author(s):  
K. Maji ◽  
K. Mukherjee ◽  
A. Raja
Keyword(s):  
Semiconductor Optical Amplifier ◽  
Extinction Ratio ◽  
Optical Power ◽  
Logic Gates ◽  
Optical Amplifier ◽  
All Optical ◽  
State Frequency ◽  
Spontaneous Noise ◽  
First Time ◽  
Practical Feasibility

All optical tri-state frequency encoded logic gates NOT and NAND are proposed and numerically investigated using TOAD based interferometric switch for the first time to the best of our knowledge. The optical power spectrum, extinction ratio, contrast ration, and amplified spontaneous noise are calculated to analyze and confirm practical feasibility of the gates. The proposed device works for low switching energy and has high contrast and extinction ratio as indicated in this work.

Recovery time for a silicon waveguide all-optical switch

1988 ◽  
Vol 24 (6) ◽  
pp. 303 ◽  
Author(s):  
P.D. Colbourne ◽  
P.E. Jessop
Keyword(s):  
Recovery Time ◽  
Optical Switch ◽  
Silicon Waveguide ◽  
All Optical ◽  
All Optical Switch

Polarization rotation-based all-optical AND gate using single semiconductor optical amplifier and implementation of a majority gate

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ashif Raja ◽  
Kousik Mukherjee ◽  
Jitendra Nath Roy
Keyword(s):  
Semiconductor Optical Amplifier ◽  
Extinction Ratio ◽  
Contrast Ratio ◽  
Optical Amplifier ◽  
Majority Voting ◽  
Polarization Rotation ◽  
All Optical ◽  
Eye Opening ◽  
Amplified Spontaneous Emission Noise ◽  
Quality Factor Q

Abstract Semiconductor optical amplifier-based polarization rotation is utilized in designing all-optical AND gate at 100 Gbps. The AND gate shows high extinction ratio (ER ∼ 15 dB), contrast ratio (CR ∼ 18 dB) and quality factor (Q-factor ∼ 16 dB). The effect of the amplified spontaneous emission noise on the performances is also investigated. The AND gate has relative eye opening (REO) varying from 93.52 to 97.1% for 10–30 dB unsaturated gain. Using the AND gate a majority voting gate is designed and analyzed and has Q ∼ 11.7 dB with REO ∼ 91%.

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