Acta Photonica Sinica, Volume. 50, Issue 5, 174(2021)
Reconfigurable Optical Chaotic Logic Operations with Fast Rate of Picoseconds Scale
Figures & Tables(13)
Fig. 1. Schematic diagram for reconfigurable chaotic logic operations of VCSEL with optical feedback
Fig. 2. The implementation of chaotic logic AND (left column) and NAND (right column) operations
Fig. 3. The implementation of chaotic logic OR (left column) and NOR (right column) operations
Fig. 4. The implementation of chaotic logic XNOR (left column) and XOR (right column) operations
Fig. 5. The implementation of chaotic logic NOT (left column) and reconfigurable operations (right column)
Fig. 6. The success probability of reconfigurable chaotic logic operations under different noise intensity
Fig. 7. The success probability of reconfigurable chaotic logic operation under different code width
Table 1. The main parameters of the system
View tableView in ArticleTable 1. The main parameters of the system
Parameter and symbol Value Parameter and symbol value Line-width enhancement factor a 3 Duty ratio R 0.5 field decay rate k 300 Polar angle θ/π 1/2 Spin relaxation rate γs/ns-1 50 Azimuth φ 0 Nonradiative carrier relaxation γe/ns-1 1 Crystal temperature F/ K 293 Dichroism γa/ns-1 -0.1 Poled period of crystal Λ/m-1 5.8×105 Birefringence γp/ns-1 2 Crystal length L/mm 15 Delay time τ/ns 2 Refractive index of o-light n1 2.24 Effective refractive index of active layer ng 3.6 Refractive index of e-light n2 2.17 Effective area of light spot SA/μm2 38.485 Differential material gain g/ m3·s-1 2.9×10-12 Length of the laser cavity Lv/μm 10 Field confinement factor to the active region Γ 0.05 Optical feedback strength kf 1.13 Volume of the active layer V/μm3 384.85 Code width T/ps 600 The noise intensity βsp 2.5×109
Table 2. For the different logic operations relationship between
L c and( I 1,I 2), the maximum average (A max) of thex -PL intensity underL c=0 and its minimum average (A min) underL c=1.View tableView in ArticleTable 2. For the different logic operations relationship between
L c and( I 1,I 2), the maximum average (A max) of thex -PL intensity underL c=0 and its minimum average (A min) underL c=1.Logic operations (I1, I2) = (0, 0) (I1, I2) = (0, 1) / (1, 0) (I1, I2) = (1, 1) Lc A Lc A Lc A 0 Amax=0 0 Amax=0 1 Amin=0.021 1 Amin=0.031 1 Amin=0.027 0 Amax=0.0014 0 Amax=0.0014 1 Amin=0.03 1 Amin=0.026 1 Amin=0.034 0 Amax=0 0 Amax=0 0 Amax=0.003 1 Amin=0.03 0 Amax=0.002 1 Amin=0.022 0 Amax=0 1 Amin=0.048 1 Amin=0.026 * * 0 Amax=0.002
Table 3. The truth table of logic AND and NAND
View tableView in ArticleTable 3. The truth table of logic AND and NAND
Logic input AND NAND (I1, I2) Lc Xo Lc Xo (0,0) 0 0 1 1 (0,1) 0 0 1 1 (1,0) 0 0 1 1 (1,1) 1 1 0 0
Table 4. The truth table of logic OR and NOR
View tableView in ArticleTable 4. The truth table of logic OR and NOR
Logic input OR NOR (I1, I2) Lc Xo Lc Xo (0,0) 0 0 1 1 (0,1) 1 1 0 0 (1,0) 1 1 0 0 (1,1) 1 1 0 0
Table 5. The truth table of logic XNOR and XOR
View tableView in ArticleTable 5. The truth table of logic XNOR and XOR
Logic input XNOR XOR (I1, I2) Lc Xo Lc Xo (0,0) 1 1 0 0 (0,1) 0 0 1 1 (1,0) 0 0 1 1 (1,1) 1 1 0 0
Table 6. The truth table of logic NOT
View tableView in ArticleTable 6. The truth table of logic NOT
Logic input NOT (I1, I2) Lc Xo (0,0) 1 1 (1,1) 0 0
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Geliang XU, Jian XU, Lingli KONG, Qifeng HUANG, Xianting QIU, Yangyang GUO, Feng CHENG. Reconfigurable Optical Chaotic Logic Operations with Fast Rate of Picoseconds Scale[J]. Acta Photonica Sinica, 2021, 50(5): 174
Paper Information
Category: Fiber Optics and Optical Communications
Received: Jan. 6, 2021
Accepted: Feb. 22, 2021
Published Online: Jun. 22, 2021
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