Terahertz Wave 4-2 Encoder Based on Photonic Crystal

Zongdan Jiang; Peili Li; Guangyue Xu

doi:10.3788/CJL202148.2014002

Chinese Journal of Lasers, Volume. 48, Issue 20, 2014002(2021)

Terahertz Wave 4-2 Encoder Based on Photonic Crystal

Zongdan Jiang, Peili Li^*, and Guangyue Xu

College of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts & Telecommunications, Jiangsu, Nanjing 210023, China

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Figures & Tables(12)

Fig. 1. Structure of the terahertz wave 4-2 encoder based on photonic crystal

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Fig. 2. TE and TM mode forbidden band diagrams of photonic crystal

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Fig. 3. Encoder performance when I₀=1, I₁=0, I₂=0, I₃=0. (a) Steady-state filed intensity distribution; (b) time-domain steady-state diagram

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Fig. 4. Encoder performance when I₀=0, I₁=1, I₂=0, I₃=0. (a) Steady-state filed intensity distribution; (b) time-domain steady-state diagram

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Fig. 5. Encoder performance when I₀=0, I₁=0, I₂=1, I₃=0. (a) Steady-state filed intensity distribution; (b) time-domain steady-state diagram

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Fig. 6. Encoder performance when I₀=0, I₁=0, I₂=0, I₃=1. (a) Steady-state filed intensity distribution; (b) time-domain steady-state diagram

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Fig. 7. Relationship between transmittance and wavelength

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Fig. 8. Relationship between contrast radio and wavelength

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Fig. 9. Influence of short cavity waveguide with different length on beam splitting effect

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Fig. 10. Output of the encoder without introduction of dielectric column

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Table 1. Truth table of the terahertz wave 4-2 encoder based on photonic crystal
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Table 1. Truth table of the terahertz wave 4-2 encoder based on photonic crystal
Input port Output port
I₀ I₁ I₂ I₃ O₁ O₀
1 0 0 0 0 0
0 1 0 0 0 1
0 0 1 0 1 0
0 0 0 1 1 1

Table 2. Peformance parameters of the terahertz wave 4-2 encoder based on photonic crystal
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Table 2. Peformance parameters of the terahertz wave 4-2 encoder based on photonic crystal
Input port Output /% Performance
I₀ I₁ I₂ I₃ O₁ O₀ V Response time /ps D_CR /dB
1 0 0 0 0 0 97.02 55 16.04
0 1 0 0 1.17 83.51 0 87
0 0 1 0 83.55 1.16 0 87
0 0 0 1 47.06 47.06 0 167

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Zongdan Jiang, Peili Li, Guangyue Xu. Terahertz Wave 4-2 Encoder Based on Photonic Crystal[J]. Chinese Journal of Lasers, 2021, 48(20): 2014002

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Paper Information

Category: terahertz technology

Received: Jan. 18, 2021

Accepted: Mar. 18, 2021

Published Online: Sep. 16, 2021

The Author Email: Li Peili (lipl@njupt.edu.cn)

DOI:10.3788/CJL202148.2014002

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Truth table of the terahertz wave 4-2 encoder based on photonic crystal

Table 1. Truth table of the terahertz wave 4-2 encoder based on photonic crystal

Table 2. Peformance parameters of the terahertz wave 4-2 encoder based on photonic crystal

Table 2. Peformance parameters of the terahertz wave 4-2 encoder based on photonic crystal