An Integrated 2-bit all Optical Analog to Digital Converter based on Photonic Crystal Semiconductor Optical Amplier Sajjad Moshfe Science and Research Branch, Ialamic Azad University, Tehran kambiz abedi (
[email protected] ) Faculty of electrical engineering, Shahid Beheshti University Mohammad Kazem Moravvej-Farshi Tarbiat Modares University Faculty of Electrical and Computer Engineering https://orcid.org/0000- 0002-8954-6418 Research Article Keywords: Photonic crystal, semiconductor optical amplier, analog to digital converter Posted Date: March 12th, 2021 DOI: https://doi.org/10.21203/rs.3.rs-283585/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Version of Record: A version of this preprint was published at Optical and Quantum Electronics on April 19th, 2021. See the published version at https://doi.org/10.1007/s11082-021-02858-3. An integrated 2-bit all optical analog to digital converter based on photonic crystal semiconductor optical amplifier Sajjad Moshfe1 Kambiz Abedi2 Mohammad Kazem Moravvej-Farshi3ORCID 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.