Micro machining with selective etching
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An All-Fiber Fabry–Pérot Sensor for Emulsion Concentration Measurements
This paper describes a Fabry–Pérot sensor-based measuring system for measuring fluid composition in demanding industrial applications. The design of the sensor is based on a two-parametric sensor, which enables the simultaneous measurement of temperature and…
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Gas Sensing System Based on an All-Fiber Photothermal Microcell
This article presents an all-fiber, miniature Fabry-Perot gas sensor based on photothermal absorption spectroscopy with a custom-made and cost-efficient interrogation system. The sensing gas microcell has a diameter of 125 μ m and a length of…
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Miniature All-Fiber Electric Current/Magnetic Field Sensor Based on Birefringence Induced in Magnetooptic Liquid
This work presents a compact fiber-integrated sensor designed for high-resolution measurement of electric currents and magnetic fields using a magneto-optic liquid microcell. The primary goal is to develop a miniature, customizable sensor capable of operating…
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Multi‑core fiber‑optic dual‑axis differential accelerometer with a broadly configurable operating range
This paper presents a miniature, dual-axis, widely tunable fiber-optic accelerometer based on a four-core fiber mechanically coupled to an inertial mass by the superelastic NiTi microwire. The proposed structure forms a compact spring–damper system with…
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High Resolution Short Response Time Fiber-Optic Temperature Sensor
This paper presents an all-silica microwire optical sensor designed for both fast response time and high-resolution temperature detection. The sensor consists of a thin optical microwire created at the tip of an optical fiber, configured…
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An all-fiber Fabry-Perot sensor for emulsion concentration measurements
This paper describes a Fabry–Pérot sensor-based measuring system for measuring fluid composition in demanding industrial applications. The design of the sensor is based on a two-parametric sensor, which enables the simultaneous measurement of temperature and…
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Nano-strain resolution fiber-optic Fabry-Perot sensors compatible with moderate/low resolution VIS-NIR spectrometers
This paper reports on nano-strain resolution fiber-optic Fabry-Perot sensors produced by an improved selective etching method. The presented sensors exhibit high spectral sensitivity, low intrinsic temperature response, small size and mounting comparable to conventional Fiber…
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Resonant-opto-thermomechanical oscillator (ROTMO): a low-power, large displacement, high-frequency optically driven microactuator
A light-driven micromechanical oscillator is presented, which can be operated by a low optical power (in the mW, or even the µW range), can produce large mechanical displacements (>5–100 µm), and can be designed to operate…
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All silica micro-fluidic flow injection sensor system for colorimetric chemical sensing
This paper presents a miniature, all-silica, flow-injection sensor. The sensor consists of an optical fiber-coupled microcell for spectral absorption measurements and a microfluidic reagent injection system. The proposed sensor operates in back reflection mode and,…
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Optical micro-wire flow-velocity sensor
This paper presents a short response time, all-silica, gas-flow-velocity sensor. The active section of the sensor consists of a 16 µm diameter, highly optically absorbing micro-wire, which is heated remotely by a 980 nm light…