Abstract:
A method of inducing or enhancing the electro-optic properties of an optically transmissive material such as an optical fibre (1) which comprises applying an electric field by means of electrodes (4) to the optical fibre and subjecting the material to UV radiation (9).
Abstract:
An optical waveguide in the form of an optical fibre (10) having at least one longitudinally extending light guiding core region (11) composed at least in part of a polymeric material, a longitudinally extending core-surrounding region (12) composed of a polymeric material, and a plurality of light confining elements (15), such as, for example, channel-like holes, located within the core surrounding region. The light confining elements extend in the longitudinal direction of the core region and are distributed about the core region, and at least a majority of the light confining elements having a refractive index less than that of the polymeric material from which the core-surrounding region is composed. A preform for use in manufacture of the optical waveguide is also disclosed.
Abstract:
A dosimeter (100) for radiation fields is described. The dosimeter includes a scintillator (1) a light pipe (2) having a first end in optical communication with the scintillator (1) and a light detector (6). The light pipe (2) may have a hollow core (3) with a light reflective material about the periphery of the hollow core (3). The dosimeter (100) may further include a light source (61) that generates light for use as a calibrating signal for a measurement signal and/or for use to check the light pipe (2).
Abstract:
A dosimeter (500) for radiation fields, the dosimeter comprising a scintillator (51); a light pipe (52) having a first end in optical communication with the scintillator (51); a detector (62) to detect light from a second end of the light pipe (52) and to provide an output indicative of the intensity of the detected light; and a light source (61) in optical communication with the light pipe (52) and arranged to emit light along the light pipe (52) in a first direction from the second end towards the first end, characterised in that the detector (62) is configured to receive light at the second end of the light pipe (52) that is travelling along the light pipe (52) in a second direction from the first end towards the second end in response to the light emitted from the light source (61) along the light pipe (52) in the first direction; and use the received light as a calibrating signal for the dosimeter (500).
Abstract:
An optical waveguide in the form of an optical fibre ( 10 ) having at least one longitudinally extending light guiding core region ( 11 ) composed at least in part of a polymeric material, a longitudinally extending core-surrounding region ( 12 ) composed of a polymeric material, and a plurality of light confining elements ( 15 ), such as, for example, channel-like holes, located within the core surrounding region. The light confining elements extend in the longitudinal direction of the core region and are distributed about the core region, and at least a majority of the light confining elements having a refractive index less than that of the polymeric material from which the core-surrounding region is composed. A preform for use in manufacture of the optical waveguide is also disclosed.
Abstract:
PCT No. PCT/AU95/00766 Sec. 371 Date Aug. 19, 1997 Sec. 102(e) Date Aug. 19, 1997 PCT Filed Nov. 17, 1995 PCT Pub. No. WO96/16344 PCT Pub. Date May 30, 1996A method of inducing or enhancing the electro-optic properties of an optically transmissive material such as an optical fiber (1) which comprises applying an electric field by means of electrodes (4) to the optical fiber and subjecting the material to UV radiation (9).