3 papers
physics.optics2021
Phase shift-cavity ring down spectroscopy in linear and active fiber cavities for sensing applications at 1550 nm
Ubaid Ullah, M. Imran Cheema
Liquid phase sensing applications at 1550~nm are highly desirable due to widely available off-the-shelf components. Generally, liquids at 1550~nm induce a high absorption loss that…
physics.med-ph2020
Detection of Aflatoxin M1 by Fiber Cavity Attenuated Phase Shift Spectroscopy
M. Daniyal Ghauri, Syed Zajif Hussain, Ubaid Ullah +4
Aflatoxin M1 (AFM1) is a carcinogenic compound commonly found in milk in excess of the WHO permissible limit, especially in developing countries. Currently, state-of-the-art tests…
eess.SP2019
Digital synthesis of multistage etalons for enhancing the FSR
Faiza Iftikhar, Usman Khan, M. Imran Cheema
Fabry-Perot fiber etalons (FPE) built from three or more reflectors are attractive for a variety of applications including communications and sensing. For accelerating a research a…