Salwa M. Salih earned her B.Sc. degree from the College of Engineering, University of Baghdad, Baghdad, Iraq, in 2013 and her MSc. from the Institute of Laser for Postgraduate Studies, University of Baghdad (2019). At present, she is pursuing a Ph.D. at the Institute of Laser for Postgraduate Studies, University of Baghdad. Her research interest is focused on quantum information science and optical communication systems.
B.Sc. Electronics and Communication Engineering, College of Engineering, University of Baghdad, 2013
M.Sc. Electronics and Communication Engineering, Institute of Laser for Postgraduate Studies, University of Baghdad, 2019
Quantum information science and optical communication systems
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In this paper, a random transistor-transistor logic signal generator and a synchronization circuit are designed and implemented in lab-scale measurement device independent–quantum key distribution systems. The random operation of the weak coherent sources and the system’s synchronization signals were tested by a time to digital convertor.
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Abstract: Polarization beam splitter (PBS) integrated waveguides are the key components in the receiver of quantum key distribution (QKD) systems. Their function is to analyze the polarization of polarized light and separate the transverse-electric (TE) and transverse-magnetic (TM) polarizations into different waveguides. In this paper, a performance study of polarization beam splitters based on horizontal slot waveguide has been investigated for a wavelength of . PBS based on horizontal slot waveguide structure shows a polarization extinction ratio for quasi-TE and quasi-TM modes larger than with insertion loss below and a bandwidth of . Also, the fabrication tolerance of the structure is analyzed.<
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