Smartphone-based optical fiber sensors are new areas of integrated technology where the
flexibility of optical fibers is combined with robust inbuilt optical sensors such as camera and …

The prevalence of sleep disorders has increased because of the fast-paced and stressful
modern lifestyle, negatively impacting the quality of human life and work efficiency. It is …

Solution concentration (SC) measurement is of great significance in various fields. Various
optical fiber SC sensors have been developed accordingly, in which the Fresnel refraction …

Optical fiber interferometers have intrinsic sensitivity to temperature, thus, in sensing
applications; they need a reference temperature sensor or a mechanism to control the …

The operating wavelength and modulation frequencies are the critical components of every
communication system. Here, we present a speckle pattern (SP) fiber-based spectrometer …

The dynamic range of optical fiber refractive index sensors is mainly determined by the
refractive index (RI) of the sensor surface in contact with the sample under test. In case of the …

Absorptive frequency-selective transmission/reflection (AFST/AFSR) metamaterials (MMs)
embedded with yttrium-iron-garnet are proposed, capable of achieving angular-insensitive …

In this work, we present a novel approach to resolve the refractive indices of transparent and
translucent liquids from straight interference fringes. The optical path difference between the …

An experimental study using a fiber-tip interferometer (FTI) to characterize traveling flexural
acoustic waves (TFAWs) along an optical fiber is reported. The measurements carried out …

Mode coupling, often overlooked at an imperfect Fresnel surface, is now examined in a
fluorine-trench dual-mode fiber to avoid energy losses and signal degradation. For invisible …