RZ to NRZ format converter based on a semiconductor optical amplifier with a saturable absorber

2006 ◽  
Author(s):  
A. Teixeira ◽  
G. M. Tosi Beleffi ◽  
T. Silveira ◽  
H. Furukawa ◽  
N. Wada
Keyword(s):  
Saturable Absorber ◽  
Semiconductor Optical Amplifier ◽  
Optical Amplifier ◽  
Format Converter

Analysis of Quantum Dot Vertical Cavity Semiconductor Optical Amplifier with Saturable Absorber

2016 ◽  
Vol 850 ◽  
pp. 100-104
Author(s):  
Omar Qasaimeh
Keyword(s):  
Quantum Dot ◽  
Absorption Coefficient ◽  
Saturable Absorber ◽  
Semiconductor Optical Amplifier ◽  
Optical Amplifier ◽  
Input Output ◽  
Trigger Level ◽  
Hysteresis Width ◽  
Vertical Cavity

We analyze the bistable characteristics of quantum dot vertical cavity semiconductor optical amplifier integrated with saturable absorber. The device demonstrates bistable characteristics in the input-output powers which can be controlled by changing the voltage of the saturable absorber. We observe that the lower trigger level is more sensitive to variation of the absorption coefficient of the saturable absorber than that of upper trigger level. For clockwise and butterfly loops, we find that the upper and lower trigger levels increase as the absorption coefficient increases, and consequently the hysteresis width decreases. For counter clockwise, the upper and lower trigger levels decrease as the absorption coefficient increases and the corresponding hysteresis width increases.

Optimization of signal transmission by an in-line semiconductor optical amplifier–saturable absorber module

2001 ◽  
Vol 187 (1-3) ◽  
pp. 141-153 ◽  
Author(s):  
C. Knöll ◽  
M. Gölles ◽  
Z. Bakonyi ◽  
G. Onishchukov ◽  
F. Lederer
Keyword(s):  
Saturable Absorber ◽  
Semiconductor Optical Amplifier ◽  
Signal Transmission ◽  
Optical Amplifier

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.

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