All-optical switch based on PbS quantum dots

2021 ◽  
Vol 119 (19) ◽  
pp. 192103
Author(s):  
Mithun Bhowmick ◽  
Akhilesh Kumar Singh ◽  
Puspendu Barik ◽  
Haowen Xi ◽  
Bruno Ullrich
Keyword(s):  
Quantum Dots ◽  
Optical Switch ◽  
All Optical ◽  
All Optical Switch ◽  
Pbs Quantum Dots

ALL-OPTICAL SWITCHES BASED ON GaAs/AlGaAs QUANTUM DOTS VERTICAL CAVITY

2011 ◽  
Vol 20 (02) ◽  
pp. 205-215 ◽  
Author(s):  
F. D. ISMAIL ◽  
R. JOMTARAK ◽  
C. TEEKA ◽  
J. ALI ◽  
P. P. YUPAPIN
Keyword(s):  
Quantum Dots ◽  
Optical Switching ◽  
Optical Switch ◽  
Novel Device ◽  
All Optical ◽  
Polarization Insensitive ◽  
All Optical Switch ◽  
20 Nm ◽  
Vertical Cavity ◽  
All Optical Switching

In this paper, an all-optical switch based on self-assembled GaAs/AlAs quantum dots (QDs) within a vertical cavity is designed and proposed. Two essential aspects of this novel device have been investigated, which include the QD/cavity nonlinearity with appropriately designed mirrors and the intersubband carrier dynamics inside QDs. The vertical-reflection-type switches have been investigated with an asymmetric cavity that consists of 12 periods of GaAs/Al0.8Ga0.2As and 25 periods for the front and back mirrors, respectively. The thicknesses of the GaAs and AlGaAs layers are chosen to be 89 and 102 nm, respectively. To give a dot-in-a-well (DWELL) structure, the 65 nm dimension of Si was recommended to deposit within a 20 nm AlAs QW. Results obtained have shown that all-optical switching via the QD excited states has been achieved with a time constant down to 275-fs and over 29.5 nm tunable wavelengths. These results demonstrated that QDs within a vertical cavity have great potential to realize low-power, consumption polarization-insensitive and micrometer-sized switching devices for future optical communication and signal processing systems.

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

A robust and inexpensive all optical switch with chiral nematic liquid crystal

2021 ◽  
Vol 119 ◽  
pp. 111306
Author(s):  
Hossein mehrzad ◽  
Ezeddin Mohajerani ◽  
Mohammad Mohammadimasoudi ◽  
Kristiaan Neyts
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Optical Switch ◽  
Chiral Nematic ◽  
All Optical ◽  
All Optical Switch

Demultiplexing of 168-Gb/s data pulses with a hybrid-integrated symmetric Mach-Zehnder all-optical switch

2000 ◽  
Vol 12 (4) ◽  
pp. 425-427 ◽  
Author(s):  
S. Nakamura ◽  
Y. Ueno ◽  
K. Tajima ◽  
J. Sasaki ◽  
T. Sugimoto ◽  
...  
Keyword(s):  
Optical Switch ◽  
All Optical ◽  
All Optical Switch
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