Md. Selim Habib, Md. Samiul Habib, S. M. Abdur Razzak, Md. Anwar Hossain
Md. Imran Hasan, Md. Selim Habib, Md. Samiul Habib, S. M. Abdur Razzak
Md. Imran Hasan, S. M. Abdur Razzak, G. K. M. Hasanuzzaman, Md. Samiul Habib
This letter reports a photonic crystal fiber having ultralow material loss and near-zero dispersion at the telecom window which is suitable for THz wave guidance. The finite element method with perfectly matched layer circular boundary is used to investigate the guiding properties. The numerical res...
Alok Kumar Paul, Md. Samiul Habib, Nguyen Hoang Hai, S. M. Abdur Razzak
Most surface plasmon resonance (SPR) based photonic crystal fiber (PCF) sensors have been designed to detect the analyte refractive index (RI) ranging from 1.33 to 1.41. In this paper, we propose a new approach to extend the detection range of the sensor, and it can be fabricated with the existing f...
Md. Imran Hasan, S. M. Abdur Razzak, Md. Samiul Habib
A residual dispersion compensating octagonal photonic crystal fiber (OPCF), with an elliptical array of circular air-holes in the fiber core region, is proposed. The full-vector finite-element method with perfectly matched layer boundary is used as the analysis tool. It is demonstrated that it is po...
Md. Imran Hasan, Md. Samiul Habib, Md. Selim Habib, S. M. Abdur Razzak
A highly birefringent dispersion compensating hybrid photonic crystal fiber is presented. This fiber successfully compensates the chromatic dispersion of standard single mode fiber over E- to L-communication bands. Simulation results reveal that it is possible to obtain a large negative dispersion c...
Md. Selim Habib, Md. Samiul Habib, S. M. Abdur Razzak, Yoshinori Namihira et al.
Md. Aslam Mollah, Md. Samiul Habib, Md. Selim Habib
We report a novel hollow-core asymmetric conjoined-tube anti-resonant (HC-ACTAR) fiber for efficient and low-loss THz wave guidance. The cladding tubes of the proposed HC-ACTAR fiber is formed by conjoining a half circle and a half elliptical tube and is placed in the radial direction. We observe th...
Md. Samiul Habib, Redwan Ahmad, Md. Selim Habib, Md. Imran Hasan
An octagonal photonic crystal fiber (PCF) with an elliptical shape in the center core is numerically investigated for residual dispersion compensation in the wavelength range 1460-1675 nm. The designed fiber exhibits flattened negative dispersion over the S + C + L + U wavelength bands and an averag...
Md. Imran Hasan, Md. Samiul Habib, S. M. Abdur Razzak
A residual dispersion compensating photonic crystal fiber (PCF) is proposed having elliptical-shaped core and octagonal structure with isosceles triangular-latticed cladding. The finite element method with circular perfectly matched layer is used to investigate the guiding properties. It is demonstr...
M. Mejbaul Haque, Mohammad Shaifur Rahman, Md. Samiul Habib, S. M. Abdur Razzak
M. Mejbaul Haque, Mohammad Shaifur Rahman, Md. Selim Habib, Md. Samiul Habib
Md. Samiul Habib, Md. Selim Habib, Md. Imran Hasan, S. M. Abdur Razzak
Md. Selim Habib, Md. Samiul Habib, M. Samiul Habib, Md. Imran Hasan et al.
M. Mejbaul Haque, Md Shamimur Rahman, Md. Samiul Habib, Md. Selim Habib et al.
This paper presents a new circular photonic crystal fiber (C-PCF) for effective dispersion compensation covering E to L wavelength bands ranging from 1360-1625 nm. To investigate its guiding properties, finite element method (FEM) with a perfectly matched layer absorbing boundary condition is used. ...
Md. Samiul Habib, K. M. Nasim, Md. Selim Habib, Md. Imran Hasan et al.
A highly birefringent dispersion compensating microstructure optical fiber (MOF) based on a modified spiral (MS)-MOF is presented that successfully compensates the dispersion covering the E- to L-communication bands ranging from 1370 to 1640 nm. It is shown theoretically that it can obtain a negativ...
Md. Samiul Habib, Md. Selim Habib, Md. Imran Hasan, S. M. Abdur Razzak
Md. Samiul Habib, Md. Selim Habib, Md. Imran Hasan, S. M. Abdur Razzak et al.
Md. Shahjalal Hossain, S. M. Abdur Razzak, Christos Markos, Nguyen Hoang Hai et al.
In this paper, we present and compare two experimentally feasible photonic crystal fiber (PCF) designs (Type-Iand Type-II) which ensure near-zero flattened dispersion with ultra-high phase and group birefringence at THz frequencies. Both structures are based on a subset of a triangular array of circ...
Md Mahbubur Rahman, Md Tanzil Shahria, Md Samiul Haque Sunny, Md Mahafuzur Rahaman Khan et al.
A significant number of individuals in the United States use assistive devices to enhance their mobility, and a considerable portion of those who depend on such aids require assistance from another individual in performing daily living activities. The introduction of robotic grippers has emerged as ...