Photonic Crystal Enhanced Electrooptic Polymer Based Optical Modulators for Realization of Integrated 40 GS/s All-Optical Analog/Digital Converters with 8 Effective Number of Bits

2021 ◽  
Author(s):  
Kai Wei
Keyword(s):  
Photonic Crystal ◽  
Effective Number ◽  
Optical Modulators ◽  
All Optical ◽  
Optical Analog ◽  
Electrooptic Polymer

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

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.

scholarly journals A Novel Proposal for All Optical Analog-to-Digital Converter Based on Photonic Crystal Structures

2017 ◽  
Vol 9 (2) ◽  
pp. 1-11 ◽  
Author(s):  
Farhad Mehdizadeh ◽  
Mohammad Soroosh ◽  
Hamed Alipour-Banaei ◽  
Ebrahim Farshidi
Keyword(s):  
Photonic Crystal ◽  
Crystal Structures ◽  
Analog To Digital Converter ◽  
Digital Converter ◽  
Analog To Digital ◽  
All Optical ◽  
Optical Analog
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