Sujan Chakma, Md. Abdul Khalek, Bikash Kumar Paul, Kawsar Ahmed et al.
The particularly sensitive circular lattice Photonic Crystal Fiber (PCF) based Surface Plasmon Resonance (SPR) sensor is proposed to gain high sensitivity for the detection of unknown analytes. In this model, two-layer PCF based on the SPR has been designed. A plasmonic chemically inactive material ...
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...
Bikash Kumar Paul, Md. Abdul Khalek, Sujan Chakma, Kawsar Ahmed
In this article, a new quasi photonic crystal fiber (PCF) with chalcogenide ellipse core has been proposed. Fundamental optical transmission characteristics such as effective area, confinement loss, numerical aperture (NA), nonlinearity and power fraction has been investigated through the full vecto...
Bikash Kumar Paul, Sujan Chakma, Md. Abdul Khalek, Kawsar Ahmed
In this paper, we have proposed a new type of quasi photonic crystal fiber (PCF) with a silicon nano crystal core. This structure can be used to sense aqueous analysis over a wavelength range of 1.00 µm to 3.00 µm. The properties of this structure are simulated using the vector-finite element method...
Md. Abdul Khalek, Sujan Chakma, Kawsar Ahmed, Bikash Kumar Paul et al.
Md. Nazmul Hossen, Md. Jannatul Ferdous, Kawsar Ahmed, Md. Abdul Khalek et al.
In this paper, we propose a photonic crystal fiber (PCF) polarization filter based on surface plasmon resonance (SPR) characteristics. Gold nanowire is used as the active plasmonic material. Light into silica core becomes coupled to gold nanowire stimulating SPR. It splits light into two orthogonal ...
S Maheswaran, Bikash Kumar Paul, Md. Abdul Khalek, Sujan Chakma et al.
The article includes the greater effort such as quasi Photonic crystal fiber (PCF) with tellurite elliptical core structure is numerically investigated. The performances of the new form of PCF are inferred by calculating the desired optical parameters. As a whole, the PCF provides a significant effe...
I. S. Amiri, Md. Abdul Khalek, Sujan Chakma, Bikash Kumar Paul et al.
In quasi pattern, photonic crystal fiber (PCF) with Ge20Sb15Se65 rectangular core is modeled. In this article, few optical properties of PCFs like power fraction, nonlinearity, effective mode area, birefringence, beat length, waveguide dispersion are obtained using finite element method (FEM). The p...
Md. Abdul Khalek, Sujan Chakma, Bikash Kumar Paul, Kawsar Ahmed
in the sensing ranges between 1.34 and 1.37. Based on the suggested sensor model may provide great impact in biological area such as bio-imaging.
Suprakash Chakma, Md. Arifur Rahman, Sujan Kanti Mali, Sourav Debnath et al.
The biochemical and microbial quality of skipjack tuna (Katsuwonus pelamis) fillets were investigated at various storage periods (15d, 30d and 60d) under frozen (-18°C) storage conditions. In the present study, the biochemical components of frozen tuna fillets were found to be significantly differen...
Suprakash Chakma, Susmita Saha, Hossain Nazmul, Rahman Md. Arifur et al.
Skipjack tuna (Katsuwonus pelamis) belongs to the Scombridae family to determine the consistency characteristics of tuna fish loins for 28th days at frozen (-18 2C) storage. The biochemical, microbial, and sensory quality were analyzed by association of official analytical chemists method, plate cou...
Md. Hazrat Ali, Pritish Haldera Md. Siam Hossain, Julian Pretom Biswas, Sujan Sarker et al.
The main impediment to practical application is the toxicity of lead ions in halide perovskite absorbing materials. Computing tools based on density functional theory (DFT) were used to predict the intrinsic properties of potential for double perovskites to be effective and suitable for optoelectron...
Sujan Sarker, Md. Abdullah Al Arif, Abinash Chakma, Uttam K. Roy et al.
Smart meter, the core part of smart grid system, is becoming an active field of research for its immense potential in efficient power distribution and load management. It is expected to have potential applications in Bangladesh as well. Efforts are already underway from distribution companies to int...
Suprakash Chakma, Md. Arifur Rahman, Pronoy Kumar Mondal, Md. Rahamat Ullah et al.
Shrimp paste (Ngapi) is the oldest method of preservation and is used as a condiment in culinary in almost all Asian countries. It has specific taste and flavor properties developed due to aging or fermentation. Therefore, the primary goal of the current study was to investigate the shelf-life of sh...
Sujana Chakma
This thesis is submitted in a partial fulfillment of the requirements for the degree of Bachelor of Arts in English, 2014.