In a photonic crystal fiber (PCF), the use of air hole as a core provides the ability to guide light in the air. The light is trapped in the defect in photonic crystal, as an application for this type of fiber, there is the high-energy transfer, endless single mode and fiber sensors, which measure physical parameters (temperature, pressure, force, etc.)
Many numerical tools exist to model...
The Optical fiber-based network also known as Fiber To The Home (FTTH) that is the future solution for providing broadband service such as voice, data and video (Triple play).This paper addresses the concept and deployment of Fiber to the Home (FTTH) for residential condominium based on the ITU-T G.984 standard Gigabit passive optical network (GPON) to reach a capacity of the maximum...
This article presents an analysis of the substrate variation effect for a new design of graphene polygonal patch antenna for Ka-band applications, Where an application of graphene as radiating patch for satellite applications; will be proposed to ensure the proper functioning of this antenna for Ka-band , the effectiveness of graphene planar antenna will proved by a numerical simulation by CST...
High-speed transmission is essential in telecommunication systems and increases according to the needs of users for various applications such as live broadcasting, video on the Internet, videoconferencing, etc. In this paper, we describe our optical communication network. Moreover, we have shown the influence of several parameters on the transmission quality of Optical Local Area Network...
The brain has always been the master of all human organs, being responsible for all voluntary or involuntary activities. For that, the brain is a subject of a many research such as neurobiology, neurology, psychiatry, psychology, linguistics, anthropology... Among the many methods of exploring the brain, the basic technique is EEG electroencephalography.
The electroencephalogram (EEG) is...
Photoplethysmography (PPG) is an optical measurement for observing changes in blood volume in a tissue non-invasively.
Photoplethysmography in the infrared is based on two principles: the presence of a pulsatile signal generated by the arterial blood and the differential absorption of oxyhemoglobin.
As part of this work, we present a formatting circuit of PPG signal in the infrared. This...
In recent decades, light became one of the most versatile components for diagnosis and therapeutic purposes. Advancement in optical science and engineering had led to invention of a wide variety of non-invasive and minimally invasive apparatuses and procedures that are inseparable from today’s medicine; namely OCT, PDT, etc. The common component of all of these methods is propagation of...
The evolution of telecommunication networks towards the transport of multimedia data (internet, telephony and IPTV) makes it necessary to seek systems offering high bandwidth and multiple access to resources. The optical network currently represents a reliable solution thanks to the qualities of the fiber (transmission channel) and the development of FTTH (Fiber To The Home) technology and...
