In recent years, optical fiber sensors based on multimode interference (MMI) have attracted
increasing interest and developed into various sensors used in many practical applications …

We review fiber-based multimode interference (MMI) devices with a particular focus on
optical fiber-based sensing applications. The present review complements a recently …

A novel and highly sensitive liquid level sensor based on a polymer optical fiber Bragg
grating (POFBG) is experimentally demonstrated. Two different configurations are studied …

Multimode fiber (MMF) sensors have been extensively developed and utilized in various
sensing applications for decades. Traditionally, the performance of MMF sensors was …

A vector magnetometer, composed of a side-polished single-mode-multimode-single-mode
fiber structure coated with ferrofluids, is proposed and investigated. The side-polishing of the …

In this paper, a novel strain sensor based on composite interference established within an S-
tapered multimode (STM) fiber structure is proposed and experimentally demonstrated. The …

The strain-and temperature-sensing characteristics of fiber ring laser (FRL) sensors are
studied comprehensively. The reflected sensing head, made up of spheroidal Fabry-Perot …

We present a novel strain sensor based on a hybrid Fabry–Perot interferometer (HFPI),
which is mainly constructed by a cascade of a suspended-core fiber (SCF) and a hollow …

The large-range and high-sensitivity strain measurement in high-temperature ambiance is a
great challenge in engineering applications. Because of the frangibility of the glass material …

This paper reports a novel coaxial cable Fabry-Perot interferometer for sensing applications.
The sensor is fabricated by drilling two holes half-way into a coaxial cable. The device …