Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.
S. PRASANNA KUMAAR1,* , A. SIVASUBRAMANIAN2,*
The proposed cost-effective polymer-based Mach-Zehnder Interferometer (MZI) refractive index (RI) sensor with rib-slot waveguide offers high sensitivity with a simple fabrication process. Due to recent demand in point-of-care biosensor at low cost, we need to identify silicon wafer-based polymer material. Hence, we designed a waveguide with Benzo Cyclobutene core and polymethyl methacrylate (PMMA) clad on a silicon wafer. The proposed gradient rib-slot waveguide structure of 2.18 μm wide and 1 μm thick, holds liquid sample in the sensing region effectively. In MZI architecture, reference arm of 1 cm and sensing arm at length of 1.3 cm with analyte refractive index of cancer cell (1.401) and Influenza A virus (1.48) are applied with thickness range from 400 nm to 90 nm. Through Finite-difference time domain (FDTD) analysis, effective mode index of BCB core are investigated and sensitivity results are calculated. Detection of cancer cell and Influenza A are plotted in transmission spectrum with normal human serum RI (1.35). This novel polymer waveguide structure achieves the MZI sensitivity of nm/RIU, which is higher in this segment of refractive index biosensing.
Mach-Zehnder Interferometer, Refractive index sensor, Benzo Cyclobutene, Waveguide sensor.
S. PRASANNA KUMAAR, A. SIVASUBRAMANIAN, Design of polymer BenzoCycloButene (BCB) based silicon photonic MZI waveguide for label-free biosensing, Optoelectronics and Advanced Materials - Rapid Communications, 18, 3-4, March-April 2024, pp.93-102 (2024).
Submitted at: July 28, 2023
Accepted at: April 8, 2024
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
Active accounts were imported to the new platform and assigned a random password by default. In order to access your account you need to access the login page and go through the Lost Password dialog (involves the system sending you an email with instructions) in order to reset your password. This step is necessary as passwords are kept in hashed form and the new platform uses modern hashing algorithms incompatible with the previous ones.