I. S. Amiri, Ahmed Nabih Zaki Rashed, A. H. M. Shahariar Parvez, Bikash Kumar Paul et al.
Abstract The study has outlined the different correction codes based optical wireless communication channel and security management in free space optics communication systems. The used codes that are namely forward error correction (FEC) code, Reed Solomon (RS) code, and Redundancy check (RC) code. ...
Bikash Kumar Paul, Md. Shadidul Islam, Kawsar Ahmed, Sayed Asaduzzaman
A micro structure porous cored octagonal photonic crystal fiber (P-OPCF) has been proposed to sense aqueous analysts (alcohol series) over a wavelength range of 0.80 μm to 2.0 μm. By implementing a full vectorial finite element method (FEM), the numerical simulation on the proposed O-PCF has been an...
Md. Uzzol Hossain, Md. Ataur Rahman, Md. Manowarul Islam, Arnisha Akhter et al.
Recently, the number of road accidents has been increased worldwide due to the distraction of the drivers. This rapid road crush often leads to injuries, loss of properties, even deaths of the people. Therefore, it is essential to monitor and analyze the driver's behavior during the driving time to ...
I. S. Amiri, Ahmed Nabih Zaki Rashed, Sohely Jahan, Bikash Kumar Paul et al.
Abstract This study presents the polar polarization mode and average radical intensity flux distribution measurements based on all optical spatial communication systems. The numerical technique that is applied with the simulation model is the diffraction fast Fourier integral transform. Spatial opti...
IS Amiri, Ahmed Nabih Zaki Rashed, Kaushik Sarker, Bikash Kumar Paul et al.
Abstract The study has outlined the finite element technique used for the fiber modal analysis of photonic crystal fiber (PCF) structure with a hexagonal/circular air holes arrangement on the cladding of pure fiber-optic silica. The used fibers that are namely highly nonlinear fiber (HNLF), single m...
IS Amiri, Ahmed Nabih Zaki Rashed, Sohely Jahan, Bikash Kumar Paul et al.
Abstract This work outlines technical specifications of the undersea fiber optic communication channel bandwidth, capacity with taken into account the maximum and minimum extended fiber cost in the presence of amplifiers stations. The number of amplifiers in the amplification stage are addressed bas...
Sohely Jahan, M. D. Saimun Islam, Linta Islam, Tamanna Yesmin Rashme et al.
Abstract Cervical cancer is a common cancer that affects women all over the world. This is the fourth leading cause of death among women and has no symptoms in its early stages. At the cervix, cervical cancer cells develop slowly. If it can be detected early, this cancer can be successfully treated....
Md. Nazmul Hossen, Md. Jannatul Ferdous, Md. Abdul Khalek, Sujan Chakma et al.
A photonic crystal fiber (PCF) biosensor based on surface plasmon resonance (SPR) is to obtain maximum sensitivity for the detection of unknown analytes. Chemically stable and inactive plasmonic material gold (Au) is used outside of the PCF structure. To evaluate the performance of the sensor, a per...
Md. Asaduzzaman Jabin, Kawsar Ahmed, Md. Juwel Rana, Bikash Kumar Paul et al.
Kawsar Ahmed, Md. Japirul Haque, Md. Asaduzzaman Jabin, Bikash Kumar Paul et al.
A novel tetra core surface plasmon resonance (T-SPR) based photonic crystal fiber (PCF) biosensor is proposed for alcohol sensing and detection in near IR region. Alcohol compounds are commercial products and heavily used for different purposes. In this work, different groups of alcohol series like-...
Md. Ibadul Islam, Kawsar Ahmed, Sayed Asaduzzaman, Bikash Kumar Paul et al.
In this paper, a spiral shape photonic crystal fiber (S-PCF) has been suggested as a gas sensor for detecting toxic or colorless gases as well as monitoring the air pollution by metering gas condensate elements in production facilities. Our reported S-PCF is micro-structured where two layers porous ...
Bikash Kumar Paul, E. Rajesh, Sayed Asaduzzaman, Md. Shadidul Islam et al.
In this paper, a slotted core photonic crystal fiber (PCF) has been designed. A rigorous numerical investigation has been done over the wider range of the wavelength from 1.30 µm to 2.0 µm near inferred region (IR). By employing full vectorial finite element method (FV-FEM) having completely circula...
Bikash Kumar Paul, Kawsar Ahmed, Vigneswaran Dhasarathan, Fahad Ahmed Al-Zahrani et al.
This study presented a novel shape photonic crystal fiber based gas sensor for the first time. Perfectly circular shape air hole are arranged to form core and cladding region. Based on full vector finite element method (FV-FEM) and circular shape perfectly matched layer (PML) the designed sensor has...
Ahmmed A. Rifat, Kawsar Ahmed, Sayed Asaduzzaman, Bikash Kumar Paul et al.
The development of highly sensitive and miniaturized sensors that capable of real-time analytes detection is highly desirable. Nowadays, toxic or colorless gas detection, air pollution monitoring, harmful chemical, pressure, strain, humidity, and temperature sensors based on photonic crystal fiber (...
Md. Anowar Kabir, Kawsar Ahmed, Md. Mehedi Hassan, Md. Moynul Hossain et al.
In this letter, a hollow core ring based circular photonic crystal fiber (PCF) is explored and proposed with stably supporting terahertz (THz) orbital angular momentum (OAM) states transmission. The proposed PCF is discussed, investigated, analyzed and simulated with optical properties in a terahert...