First Demonstration of Pattern Effect Reduction in 40 Gb/s Semiconductor Optical Amplifier Based All-Optical Switch Utilizing Transparent cw Assist Light

2002 ◽  
Vol 41 (Part 1, No. 2B) ◽  
pp. 1199-1202 ◽  
Author(s):  
Munefumi Tsurusawa ◽  
Kohsuke Nishimura ◽  
Masashi Usami
Keyword(s):  
Semiconductor Optical Amplifier ◽  
Optical Switch ◽  
Optical Amplifier ◽  
Pattern Effect ◽  
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.

PATTERN EFFECT MITIGATION IN HIGH-SPEED ALL-OPTICAL SWITCH BASED ON CROSS-GAIN MODULATION IN TWO SOAs WITH DIFFERENT BANDGAPS

2010 ◽  
Vol 24 (19) ◽  
pp. 2031-2040
Author(s):  
LI WANG ◽  
MUGUANG WANG ◽  
SHUQIN LOU ◽  
WEI-PING HUANG
Keyword(s):  
High Speed ◽  
Optical Switch ◽  
Gain Modulation ◽  
Absorption Region ◽  
Pattern Effect ◽  
Cross Gain Modulation ◽  
All Optical ◽  
Recovery Dynamics ◽  
All Optical Switch ◽  
Gain Recovery

Two cascaded semiconductor optical amplifiers (SOAs) with different bandgaps are proposed as an all-optical switch based on cross-gain modulation (XGM) to reduce the pattern effect inflicted by a carrier-lifetime-related long-lived gain recovery tail. We numerically investigate the device gain recovery dynamics in such setup excited by 100 Gbit/s pseudorandom return-to-zero control signal at 1520 nm for different probe wavelengths. The preliminary simulation results indicate that the pattern effect in a SOA in which control pulses are localized in gain region can be reduced by a concatenated SOA in which control pulses are situated in the absorption region. This compensation principle is always valid when the bit rate is beyond 100 Gbit/s.

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