Results 21 to 30 of about 3,116,731 (322)
Optical Fibre Catheter Photoplethysmograph [PDF]
Measurement and Control, 2006 A fibre optic system for monitoring arterial oxygen saturation of internal tissue sites utilising the principle of reflectance pulse oximetry is being developed. It was shown that it is possible to obtain a stable photoplethysmograph (PPG) signal from the fingertip using a twin optical fibre catheter.
Phillips, J. P. +3 more
openaire +4 more sources
Ultra-dense optical data transmission over standard fibre with a single chip source [PDF]
Nature Communications, 2020 Micro-combs - optical frequency combs generated by integrated micro-cavity resonators – offer the full potential of their bulk counterparts, but in an integrated footprint.
B. Corcoran +10 more
semanticscholar +2 more sources
Nonlinear Hydraulic Pressure Response of an Improved Fiber Tip Interferometric High-Pressure Sensor
Sensors, 2020 We demonstrate a silica diaphragm-based fiber tip Fabry–Perot interferometer (FPI) for high-pressure (40 MPa) sensing. By using a fiber tip polishing technique, the thickness of the silica diaphragm could be precisely controlled and the pressure ...
Wei Huang +7 more
doaj +1 more source
Advances in infrared and imaging fibres for astronomical instrumentation [PDF]
, 2006 Optical fibres have already played a huge part in ground based astronomical instrumentation, however, with the revolution in photonics currently taking place new fibre technologies and integrated optical devices are likely to have a profound impact on ...
Haynes, Roger +3 more
core +2 more sources
A High-Strength Strain Sensor Based on a Reshaped Micro-Air-Cavity
Sensors, 2020 We demonstrate a high-strength strain sensor based on a micro-air-cavity reshaped through repeating arc discharge. The strain sensor has a micro-scale cavity, approximate plane reflection, and large wall thickness, contributing to a broad free spectrum ...
Yanping Chen +7 more
doaj +1 more source
Mutual optical injection in coupled DBR laser pairs [PDF]
, 2009 We report an experimental study of nonlinear effects, characteristic of mutual optical coupling, in an ultra-short coupling regime observed in a distributed Bragg reflector laser pair fabricated on the same chip.
Avila +34 more
core +1 more source
Measurement of Interfacial Adhesion Force with a 3D-Printed Fiber-Tip Microforce Sensor
Biosensors, 2022 With the current trend of device miniaturization, the measurement and control of interfacial adhesion forces are increasingly important in fields such as biomechanics and cell biology.
Mengqiang Zou +7 more
doaj +1 more source
Overview of the sensitivity of Ge- and Al-doped silicon dioxide optical fibres to ionizing radiation [PDF]
, 2012 This paper reviews the thermoluminescence sensitivity of Ge- and Al- doped SiO2 optical fibre subjected to various ionizing radiations. It is found that the Ge- doped SiO2 optical fiber has the thermoluminescence response superior to Al-doped SiO2 ...
Hashim, Suhairul +3 more
core +1 more source
Optical Fibre Pressure Sensors in Medical Applications
Sensors, 2015 This article is focused on reviewing the current state-of-the-art of optical fibre pressure sensors for medical applications. Optical fibres have inherent advantages due to their small size, immunity to electromagnetic interferences and their suitability
Sven Poeggel +5 more
doaj +1 more source
Light-matter entanglement over 50 km of optical fibre [PDF]
npj Quantum Information, 2019 When shared between remote locations, entanglement opens up fundamentally new capabilities for science and technology. Envisioned quantum networks use light to distribute entanglement between their remote matter-based quantum nodes. Here we report on the
V. Krutyanskiy +5 more
semanticscholar +1 more source