Abstract

An uncoated polymer optical fibre (POF) that is sensitive to a chemical (e.g. water) and is used to generate a detectable change in its optical properties for the purpose of detecting that chemical when it is dissolved in liquid fuel. The presence of the chemical directly affects the optical properties of the optical fibre. The POF may be made of water-permeable plastic material and may have a grating section comprising a periodic refractive index modulation that exhibits a characteristic reflection or transmission profile to be monitored by a detector. The water-permeability of the constituent material of the POF permits diffusion of water into the fibre, thereby affecting its refractive index or geometry and hence altering the characteristic reflection or transmission profile of the grating section.
Original languageEnglish
Patent numberGB 0915492.3
IPCG01N21/41
Publication statusPublished - 4 Sep 2009

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optical fibers
sensors
water
polymers
gratings
refractivity
optical properties
liquid fuels
profiles
permeability
plastics
modulation
fibers
detectors
geometry

Cite this

Webb, D. (2009). IPC No. G01N21/41. Water-in-fuel sensor. (Patent No. GB 0915492.3).
Webb, David (Inventor). / Water-in-fuel sensor. IPC No.: G01N21/41. Patent No.: GB 0915492.3.
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title = "Water-in-fuel sensor",
abstract = "An uncoated polymer optical fibre (POF) that is sensitive to a chemical (e.g. water) and is used to generate a detectable change in its optical properties for the purpose of detecting that chemical when it is dissolved in liquid fuel. The presence of the chemical directly affects the optical properties of the optical fibre. The POF may be made of water-permeable plastic material and may have a grating section comprising a periodic refractive index modulation that exhibits a characteristic reflection or transmission profile to be monitored by a detector. The water-permeability of the constituent material of the POF permits diffusion of water into the fibre, thereby affecting its refractive index or geometry and hence altering the characteristic reflection or transmission profile of the grating section.",
author = "David Webb",
year = "2009",
month = "9",
day = "4",
language = "English",
type = "Patent",
note = "GB 0915492.3; G01N21/41",

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Webb, D 2009, Water-in-fuel sensor, Patent No. GB 0915492.3, IPC No. G01N21/41.

Water-in-fuel sensor. / Webb, David (Inventor).

IPC No.: G01N21/41. Patent No.: GB 0915492.3.

Research output: Patent

TY - PAT

T1 - Water-in-fuel sensor

AU - Webb, David

PY - 2009/9/4

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N2 - An uncoated polymer optical fibre (POF) that is sensitive to a chemical (e.g. water) and is used to generate a detectable change in its optical properties for the purpose of detecting that chemical when it is dissolved in liquid fuel. The presence of the chemical directly affects the optical properties of the optical fibre. The POF may be made of water-permeable plastic material and may have a grating section comprising a periodic refractive index modulation that exhibits a characteristic reflection or transmission profile to be monitored by a detector. The water-permeability of the constituent material of the POF permits diffusion of water into the fibre, thereby affecting its refractive index or geometry and hence altering the characteristic reflection or transmission profile of the grating section.

AB - An uncoated polymer optical fibre (POF) that is sensitive to a chemical (e.g. water) and is used to generate a detectable change in its optical properties for the purpose of detecting that chemical when it is dissolved in liquid fuel. The presence of the chemical directly affects the optical properties of the optical fibre. The POF may be made of water-permeable plastic material and may have a grating section comprising a periodic refractive index modulation that exhibits a characteristic reflection or transmission profile to be monitored by a detector. The water-permeability of the constituent material of the POF permits diffusion of water into the fibre, thereby affecting its refractive index or geometry and hence altering the characteristic reflection or transmission profile of the grating section.

M3 - Patent

M1 - GB 0915492.3

ER -

Webb D, inventor. Water-in-fuel sensor. G01N21/41. 2009 Sep 4.