Jul 25, 2025
In this paper, the field distribution and effective refractive index of transmission modes in single-core six-hole optical fiber were researched by
Jun 25, 2026
Process Sensors Corp is a world leader in Advanced IR Temperature Measurement devices. Sensors, cameras and accessories are available for monitoring
Nov 19, 2025
The Fraunhofer IPT develops fiber optic sensors for challenging measurement tasks in the tightest of spaces, such as measuring the smallest of boreholes.
Aug 07, 2025
In order to solve the problem of ultraprecision measurements of micro-holes with high aspect ratios, a tactile fiber probe based on the detection of the returning light energy center is
Mar 27, 2026
Summary An integrated aerodynamic three-hole pressure probe (THP) based on a fiber-optic tip sensor array for high-velocity flow field vector measurement is developed and demonstrated
Dec 28, 2025
Microhole optical fiber sensors have the characteristics of simple structure, enclosed environment, strong light and liquid interaction, which can meet the requirements of multi-parameter,
Jun 07, 2026
Abstract The five-hole pressure probe based on Micro-Electro-Mechanical Systems (MEMS) technology is designed to meet the needs of engine inlet pressure measurement. The probe, including a
Feb 10, 2026
Multiplexed Fiber-Optic Pressure and Temperature Sensor System for Down-Hole Measurement Abstract: A fiber Fabry-Perot (F-P) interferometer and a fiber Bragg grating (FBG) based pressure
Nov 07, 2025
This study presents a novel reflective fiber Fabry–Perot (F–P) salinity sensor. The sensor employs a femtosecond laser to fabricate an open liquid
Aug 20, 2025
A fiber optic sensor for measuring the diameter and form errors of very small hole or blind hole with diameter down to 0.2 mm and depth to diameter ratio up to 20 was developed.
Oct 02, 2025
In this paper, a novel inline optical fiber sensor for curvature and temperature measurement simultaneously has been proposed and
Jun 11, 2026
Using fibre-optic sensors and miniature measuring probes, the layer position, drill hole depth and surface quality in MICROVIAS on multi-layer boards can be detected with high precision.
Feb 07, 2026
The system can measure the roundness, straightness, cylindricity, and roughness. The main difficulty to measure the small diameter hole is in the relative positioning and aligning between
Dec 01, 2025
A variety of technologies that address the problem of small hole measurement are reported in the literature [1-4]. In this paper we describe a probing method, referred to as Fiber Deflection Probing
Jan 26, 2026
This study presents a novel reflective fiber Fabry–Perot (F–P) salinity sensor. The sensor employs a femtosecond laser to fabricate an open liquid cavity, facilitating the unobstructed ingress and egress
Jun 15, 2026
In contrast with tactile measuring devices, fiber-optic sensors from fionec do not affect or damage the surface of the test specimens. This makes it possible to perform roughness measurements even on
Apr 04, 2026
Fraunhofer IPT develops fiber-optic sensors for challenging measurement tasks such as measuring the smallest of boreholes. Using fiber-integrated beam
Jul 06, 2026
Abstract The optical properties of compact in-fiber refractive index (RI) sensor based on a micro-hole created in a conventional single-mode fiber using femtosecond laser micromachining is
Feb 10, 2026
Inspect surface in micro-drilled holes, small gaps and other hard-to-access spaces with nanometer accuracy. Measurable diameters starting from 100 µm.
Jan 31, 2026
Since optical non-contact methods are difficult to use for measuring the diameter and from errors of small hole at any cross section, a fiber optic sensor, which combines the advantages of
Jan 22, 2026
Microhole optical fiber with micro air holes can provide fitting space and circulation channel for the measurement of miniature volume liquid.
Oct 25, 2025
Benchtop optical power meters provide accurate measurements of optical power and energy by reading the output of calibrated optical sensors. Our benchtop optical power and energy meters are plug and
Oct 16, 2025
This work presents an expandable fiber optic curvature sensor. The sensor achieves multi-point curvature measurements by cascading different lengths o
Feb 28, 2026
We developed a system to measure the internal profile of small diameter hole. The minimum measurable diameter is 0.14 mm and the maximum measureable depth is 2 mm. The
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