Two bit all-optical analog-to-digital converter based on nonlinear Kerr effect in 2D photonic crystals

2012 ◽  
Vol 285 (13-14) ◽  
pp. 3228-3233 ◽  
Author(s):  
Bahar Youssefi ◽  
Mohammad Kazem Moravvej-Farshi ◽  
Nosrat Granpayeh
Keyword(s):  
Photonic Crystals ◽  
Kerr Effect ◽  
Analog To Digital Converter ◽  
Digital Converter ◽  
Analog To Digital ◽  
All Optical ◽  
Nonlinear Kerr Effect ◽  
Optical Analog

All-optical analog-to-digital converter based on Kerr effect in photonic crystal

2018 ◽  
Vol 101 ◽  
pp. 138-143 ◽  
Author(s):  
Dariush Jafari ◽  
Tofiq Nurmohammadi ◽  
Mohammad Javad Asadi ◽  
Karim Abbasian
Keyword(s):  
Photonic Crystal ◽  
Kerr Effect ◽  
Analog To Digital Converter ◽  
Digital Converter ◽  
Analog To Digital ◽  
All Optical ◽  
Optical Analog

scholarly journals Resolution-enhanced all-optical analog-to-digital converter employing cascade optical quantization operation

2014 ◽  
Vol 22 (18) ◽  
pp. 21441 ◽  
Author(s):  
Zhe Kang ◽  
Xianting Zhang ◽  
Jinhui Yuan ◽  
Xinzhu Sang ◽  
Qiang Wu ◽  
...  
Keyword(s):  
Analog To Digital Converter ◽  
Digital Converter ◽  
Analog To Digital ◽  
All Optical ◽  
Optical Analog ◽  
Optical Quantization

scholarly journals Designing an Integrated All-Optical Analog to Digital Converter

2020 ◽  
Vol 14 (1) ◽  
pp. 3-14
Author(s):  
Sajjad Moshfe ◽  
◽  
Mohammad Kazem Moravvej-Farshi ◽  
Kambiz Abedi ◽  
◽  
...  
Keyword(s):  
Analog To Digital Converter ◽  
Digital Converter ◽  
Analog To Digital ◽  
All Optical ◽  
Optical Analog

An Integrated 2-bit all Optical Analog to Digital Converter based on Photonic Crystal Semiconductor Optical Amplifier

2021 ◽  
Author(s):  
Sajjad Moshfe ◽  
kambiz abedi ◽  
Mohammad Kazem Moravvej-Farshi
Keyword(s):  
Photonic Crystal ◽  
Semiconductor Optical Amplifier ◽  
Optical Amplifier ◽  
Nonlinear Frequency ◽  
Analog To Digital Converter ◽  
Digital Converter ◽  
Center Wavelength ◽  
Analog To Digital ◽  
All Optical ◽  
Optical Analog

Abstract In this paper, by integrating InP/InGaAsP/InP Photonic crystal semiconductor optical amplifier (PhC-SOA) with photonic crystal channel drop filters (PhC-CDF), we present a novel fully integrated ultra-small low-power all-optical analog to digital converter (AO-ADC). The self-phase modulation in the PhC-SOA can shift the frequency of the Gaussian input pulse. The two output PhC-CDFs are designed in a way that appropriately codes the frequency-shifted pulse by the PhC-SOA, which consequently converts them to four desired digital output levels. The numerical results indicated that the center wavelength of an amplitude modulated Gaussian pulse with a center wavelength of 1551.228 nm, temporal pulse-width of 10.6 ps, and energy of 74.4 fJ can be shifted by 1.652 nm. This shift is accommodated by utilizing a PhC-SOA with a length of 9 µm and an injection current of 6.5 mA. The shifted pulse is then quantized and coded to the four digital levels of (00, 01, 10, 11) by two point-defect PhC-CDFs. The PhC-CDFs minimize the AO-ADC integral and differential nonlinearity (INL/DNL) errors by compensating for the effect of the nonlinear frequency shift induced by PhC-SOA. The proposed design offers a footprint of 142 µm2 AO-ADC working at 10 Gs/s.

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