Mohammad Al Mahfuz, Md. Aslam Mollah, Moriom Rojy Momota, Alok Kumar Paul et al.
In this paper, a highly sensitive photonic crystal fiber (PCF) based surface plasmon resonance (SPR) biosensor is proposed and analyzed. Well-known hexagonal lattice with all circular air holes as well as metal deposition outside the PCF surface gives this sensor a straightforward design. Using the ...
Md. Mahabubur Rahman, Md Masud Rana, Md Saifur Rahman, Md. Shamim Anower et al.
In this paper, two exclusive surface plasmon resonance (SPR) biosensors are proposed numerically utilizing the newly emerged transition metal dichalcogenides (e.g. PtSe2) composed with 2D materials (e.g. Graphene, MoS2 and WS2) onto the traditional SPR biosensors. The performance of the sensors is i...
Md. Aslam Mollah, Md. Yousufali, Istihad Mahmud Ankan, Md. Mahabubur Rahman et al.
This paper presents a twin-core photonic crystal fiber (TC-PCF) for early detection of blood cancer based on refractive index (RI) of the normal and cancerous blood cell. The samples of the normal and cancerous cells are considered at 30–70% and 80% in liquid form, respectively, and proposed to be i...
Md. Aslam Mollah, S. M. Riazul Islam, Md. Yousufali, Lway Faisal Abdulrazak et al.
Simple structure and high sensitivity with a broad detection range are highly desirable for temperature sensor. This work presents a highly sensitive plasmonic sensor based on D-shaped photonic crystal fiber (PCF) in the near infrared region (900–1900 nm) for temperature measurement. The proposed se...
Md. Aslam Mollah, Md. Yousufali, Md. Rifat Bin Asif Faysal, Md. Rabiul Hasan et al.
For a sensor, high sensitivity, structural simplicity, and longevity are highly desired for measurement of salinity in seawater. This work proposed an ultrahigh sensitive photonic crystal fiber (PCF) salinity sensor based on the sagnac interferometer (SI). The propagation characteristics of the prop...
Md. Aslam Mollah, S. M. Abdur Razzak, Alok Kumar Paul, Md. Rabiul Hasan
This work proposes a highly sensitive plasmonic sensing scheme on a simple circular lattice microstructure optical fiber (MOF) structure. The proposed sensor performance is evaluated by using the finite element method (FEM) in the presence of perfectly matched layer (PML) and scattering boundary con...
Md. Aslam Mollah, Rownok Jahan Usha, Sanjida Tasnim, Kawsar Ahmed
Md. Aslam Mollah, Sohel Rana, Harish Subbaraman
A Zeonex based loss hollow-core anti-resonant fiber (HC-ARF) for polarization filter (PF) application in the terahertz (THz) spectral range is presented here. The finite element method, a practical and precise computational technique, is used to compute the modal properties of the designed fiber. Si...
Hasan Sarker, Mohammad Faisal, Md. Aslam Mollah
An optical fiber having the properties of photonic crystal and offering new diversity and features beyond a conventional optical fiber is the photonic crystal fiber (PCF). In this paper, a simplified version of a highly sensitive plasmonic sensor, called a “slotted PCF based plasmonic biosensor,” is...
Md. Aslam Mollah, Md. Saiful Islam
Flexibility in design and controlling the waveguide properties in photonic crystal fiber (PCF) has enabled diverse plasmonic sensing devices with attractive features. Here, we propose a novel single air hole exposed core PCF sensor based on localized surface plasmon resonance (LSPR) for bio-analyte ...
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...
Hasan Sarker, Farzana Alam, Mahfizur Rahman Khan, Md. Aslam Mollah et al.
With technological advancement, photonic crystal fibers (PCFs) are effectively used to design miniaturized, flexible, and efficient biosensors. This paper proposes an exposed core PCF biosensor based on widely known surface plasmon resonance (SPR) phenomena. An external sensing mechanism is followed...
Abu Bakar Siddik, Selim Hossain, Alok Kumar Paul, Mahabubur Rahman et al.
In this paper, we design and simulate a dual core photonic crystal fiber (DC-PCF) temperature sensor in terms of wavelength sensitivity. The dual core design of the PCF makes it possible to deposit the gold (plasmonic material) layer and analyte (high temperature coefficient liquid) outside the PCF ...
Md. Aslam Mollah, Hasan Sarker, Mominul Ahsan, Md. Towfik Elahi et al.
The ease of controlling waveguide properties through unparalleled design flexibility has made the photonic crystal fiber (PCF) an attractive platform for plasmonic structures. In this work, a dual analyte channel’s highly sensitive PCF bio-sensor is proposed based on surface plasmon resonance (SPR)....
Alok Kumar Paul, Md. Aslam Mollah, Md. Zahid Hassan, Nelson Gómez-Cardona et al.
This paper presents the design and analysis of a surface plasmon resonance (SPR) sensor in a photonic crystal fiber (PCF) platform, where graphene is used externally to attain improved sensing performance for an aqueous solution. The performance of the proposed sensor was analyzed using the finite e...