optical fibres
Thermoluminescence response of doped silicon dioxide optical fibres subjected to electron irradiation
... with that of TL dosimeter i.e TLD-100 (LiF:Mg,Ti) rods were investigated. Scanning electron microscopy (SEM) was used to determine the dopant concentration in each doped optical fibres. The irradiation was ...
31
Nano-Structured Films on Optical Fibres as Chemical Sensors and Actuators
... This thesis focuses on using conventional telecommunication optical fibres with nano- porous thin films for di ff erent environmental and medical applications. Nanoporous materials are materials with ...
163
Optimal spacing between transmitting and receiving optical fibres in reflectance pulse oximetry
... pulse oximetry depends on the quality and amplitude of the photoplethysmographic (PPG) signal and for this reason an experimental procedure was carried out to examine the effect of the source-detector separation distance ...
9
Development of rare earth doped microstructured optical fibres
... The losses induced by impurities have been a major issue to be solved to widen the transparent spectral window of conventional silica based optical fibres and continuous efforts have been made to improve ...
213
Light coherence properties in optical fibres and visual receptors
... since optical fibres were first seriously considered as a long range communications medium ...specialised optical sources and detectors, have made optical fibre communications systems a ...
194
Effect of photon irradiation on the thermoluminescence response of optical fibres
... 12 optical fibres sample namely Ge (A) Batch 1, 2 and 3, Ge (B), Multi Photonic Crystal Fibre (MPCF, 220 µm), Multi Photonic Crystal Fibre (MPCF, 2 mm), photonic crystal fibres (PCF), Dummy Flat ...
33
Geometric optics theory of graded index optical fibres
... corners, optical fibres have the advantages of being light weight, of small size and potential low cost compared with copper ...step fibres, as well as system and economic ...
183
Basic Thermoluminescence Characteristics of Fabricated Germanium Doped Cylindrical Optical Fibres under Low Dose Particles Irradiations
... doped optical fibres have been studied extensively as a substitute of commercially used TLD for passive dosimetry due to its affordable and robust ...cylindrical fibres with diameters of 483 µm ...
10
Remote spectroscopic monitoring of liquids via silica optical fibres
... iiNTVTSRsrrYCHiscyuTTiAJdFnrofj ABSTRACT FACULTY OF ENGINEERING ELECTRONICS AND COMPUTER SCIENCE Doctor of Philosophy REMOTE SPECTROSCOPIC MONITORING OF LIQUIDS VIA SILICA OPTICAL FIBRES[r] ...
196
Theory and application of ray transmission coefficients in multimode optical fibres
... graded-index fibre for its image relay property in medical endoscopy for the purpose of internal examination and diagnosis. Weight reduction in airborne systems along with an absence of crosstalk and interference ...
310
Optical Fibres by using Digital Communication without Direct Current to Detect CFD
... in Optical Fibres by using Digital communication technology without Direct Current A fault detection system is provided for detecting and locating faulty connections in a Optical cable ...
5
A tomographic imaging system for pneumatic conveyors using optical fibres
... required. Optical fibres are employed due to their small dimensions (order of 1 mm diameter) which will enable them to be spaced at ...single optical fibre transducer (which is part of a 16 x 16 ...
175
Holey optical fibres for high nonlinearity devices
... of optical fibers since 1983 has been conventional, dispersion-unshifted single mode fibers, such as SMF ...practical optical fibre transmission ca- pacity, by operating at a wavelength around 1550 nm, ...
163
The thermoluminescence response of Ge-doped optical fibres to X-ray photon irradiation
... Ge-doped optical fibres by measuring the composition o f the elements ...The optical fibres were attached to the surface area o f a stainless steel sample ...the optical fibre samples ...
7
Use of optical fibres for multi parameter monitoring in electrical AC machines
... using optical fibres incorporating sensors in the form of fibre Bragg gratings (FBGs) distributed around the ...the optical fibre based approach allows multiple parameters to be monitored accurately ...
5
Rogue wave generation by inelastic quasi soliton collisions in optical fibres
... Abstract: Optical “rogue” waves are rare and very high intensity pulses of light that occur in optical devices such as communication ...in optical communication ...
15
Development of a beam loss monitor using the Cherenkov Effect in optical fibres
... Measurements were performed for the SiPMs of three different suppliers (Photonique, SensL, ST-Microelectronics) whose main features are described in Table 4.1. The SiPM light response, the dynamic range, the dark noise ...
183
Analysis and Applications of Nonlinearities in Optical Fibres in Wavelength Division Multiplexed Systems
... standard optical fibre that has the water absorption peak at around 1380 nm, when the pump wavelength is set in the vicinity of this wavelength, the pump efficiency significantly ...
10
Studies into the detection of buried objects (particularly optical fibres) in saturated sediment Part 1: background
... Subsequent reports [61-64] detail various facets of the study to investigate the detection of targets buried in saturated sediment, primarily through acoustical or acoustics-related methods. Although steel targets are ...
42
Influence length of single-beam propagation in doped glass and polymer optical fibres
... Optical fibre lasers and amplifiers made as doped optical fibres (DOFs) have many practical applications in industries and medicine. A number of characteristics of DOFs should be determined prior to ...
9