Abstract: An optical fiber cleaving device (1) has a knife (3) and two clamping arrangements (6a, 7). A first clamping arrangement (6a) includes an element (8a) configured to receive a light-radiation-curing adhesive (11) together with an end portion (5a) of the fiber (5), which is embedded in the adhesive (11). A lamp (15) is configured to apply light on the adhesive (11) to cure it so that the end portion (5a) of the fiber (5) is firmly bound to the element (8a). The end portion (5a) is in this way fixedly held during cleaving of the fiber (5). A method is also provided for cleaving an optical fiber (5), in which the fiber (5) to be cleaved is clamped using light-radiation-curing adhesive (11), as well as use of a fiber cleaving device (1).

Abstract: A method for determining a spoiler gradient of a magnetic resonance (MR) system is provided. At least one shim parameter that defines a shim magnetic field for compensating for B0 magnetic field inhomogeneities in a measurement volume of the MR system is received. As a function of the at least one shim parameter, at least one spoiler parameter that defines a spoiler gradient for canceling out a transverse magnetization is determined. The spoiler gradient is applied together with the shim magnetic field in a measurement of the MR system.

Abstract: A method for determining a spoiler gradient of a magnetic resonance (MR) system is provided. At least one shim parameter that defines a shim magnetic field for compensating for B0 magnetic field inhomogeneities in a measurement volume of the MR system is received. As a function of the at least one shim parameter, at least one spoiler parameter that defines a spoiler gradient for canceling out a transverse magnetization is determined. The spoiler gradient is applied together with the shim magnetic field in a measurement of the MR system.

Abstract: The present invention relates to an optical fiber cleaving device (1) comprising cleaving means (3) and two clamping arrangements (6a, 7). A first clamping arrangement (6a) comprises an element (8a) configured to receive a light-radiation-curing adhesive (11) together with an end portion (5a) of the fiber (5), which is embedded in the adhesive (11). The device (1) further comprises means (15) configured to apply light on the adhesive (11) to cure it so that the end portion (5a) of the fiber (5) is firmly bound to the element (8a). The end portion (5a) is in this way fixedly held during cleaving of the fiber (5). The invention also relates to a method for cleaving an optical fiber (5), in which the fiber (5) to be cleaved is clamped using light-radiation-curing adhesive (11), as well as use of a fiber cleaving device (1).

Abstract: An apparatus for and method of removing a protecting synthetic coating (1) from an elongated element (2) in the form of an optical fiber (3) surrounded by the coating wherein a cut (8) is created into the coating by knife edges (6). The element is displaced with respect to the knife edges in the longitudinal direction of the element for displacing coating material (17) by the knives. At least one drop of liquid (12) with wetting properties is supplied to the cut for being sucked into a space created between the coating and the optical fiber during the displacement for acting as a lubricant for sliding the coating along the fiber to remove the coating from the fiber.

Abstract: An optical fiber cleaving device comprises a frame provided with cleaving means for cleaving an optical fiber (4) therewith, and first and second (6) fiber clamping arrangements configured to hold a fiber (4) to be cleaved on opposite sides of the fiber cleaving means during cleaving of the fiber (4). The optical fiber cleaving device further comprises first securing means configured to re-movably secure said first clamping arrangement to the frame and second securing means configured to removably secure said second clamping arrangement (6) to the frame.

Abstract: In a method of removing a protecting synthetic coating (1) from an elongated element (2) in the form of an optical fibre (3) surrounded by the coating a cut (8) is created into the coating by knife edges (6). The element is displaced with respect to the knife edges in the longitudinal direction of the element for displacing coating material (17) by said knives. At least one drop of liquid (12) with wetting properties is supplied to the cut for being sucked into a space created between the coating and the optical fibre during said displacement for acting as a lubricant for a sliding of the coating to be removed along the fibre.

Abstract: In a method of removing a protecting synthetic coating (1) from an elongated element (2), the elongated element (2) including an optical fiber (3) surrounded by the coating, a cut (8) is created into the coating by knife edges (6). The element (2) is displaced with respect to the knife edges in a longitudinal direction of the element (2) for displacing coating material (17) by the knives. At least one drop of liquid (12) with wetting properties is supplied to the cut for being sucked into a space created between the coating and the optical fiber during the displacement of the coating for acting as a lubricant for a sliding of the coating to be removed along the fiber.

Abstract: An optical fiber cleaving device comprises a frame provided with cleaving means for cleaving an optical fiber (4) therewith, and first and second (6) fiber clamping arrangements configured to hold a fiber (4) to be cleaved on opposite sides of the fiber cleaving means during cleaving of the fiber (4). The optical fiber cleaving device further comprises first securing means configured to re-movably secure said first clamping arrangement to the frame and second securing means configured to removably secure said second clamping arrangement (6) to the frame.

Abstract: In a method of removing a protecting synthetic coating (1) from an elongated element (2) in the form of an optical fibre (3) surrounded by the coating a cut (8) is created into the coating by knife edges (6). The element is displaced with respect to the knife edges in the longitudinal direction of the element for displacing coating material (17) by said knives. At least one drop of liquid (12) with wetting properties is supplied to the cut for being sucked into a space created between the coating and the optical fibre during said displacement for acting as a lubricant for a sliding of the coating to be removed along the fibre.

Abstract: A method for cleaving thin rods of glass or quartz with a rod cleaving blade (27) and body (28) carrying the blade, is provided. The body (28) is of material varying in length through application of electric and/or magnetic fields. Driving force (31, 33) achieves relatively steady movement of the blade (27) towards a desired cleaving point and relatively steady small-amplitude vibratory component of movement towards and away from the cleaving point superimposed to the relatively steady movement, by influencing the body (28) electrically and/or magnetically. The blade is driven to vibrate with a frequency below 1 kHz during cleaving operation.

Abstract: An arrangement for clamping a thin rod of glass or quartz having a diameter below 1 mm in two mutually-spaced clamping locations for holding the rod extended between the two clamping locations. The arrangement also comprises first clamping device arranged to clamp the rod in a first clamping location. The first clamping device has a first clamping member (22) with a clamp face (23) of substantially V-groove type for receiving the rod in the groove (24). The first clamping member is movably arranged with respect to a framework (45) of the apparatus for clamping a rod.

Abstract: A method for cleaving thin rods of glass or quartz with a rod cleaving blade (27) and body (28) carrying the blade, is provided. The body (28) is of material varying in length through application of electric and/or magnetic fields. Driving force (31, 33) achieves relatively steady movement of the blade (27) towards a desired cleaving point and relatively steady small-amplitude vibratory component of movement towards and away from the cleaving point superimposed to the relatively steady movement, by influencing the body (28) electrically and/or magnetically. The blade is driven to vibrate with a frequency below 1 kHz during cleaving operation.

Abstract: In a method and apparatus for detection improvement of a weakly-sensitive atomic nucleus type in MR spectroscopy data acquisition using polarization transfer for a strongly-sensitive atomic nucleus type (A) with involvement of an MR-active, weakly-sensitive atomic nucleus type (X), all RF pulses are radiated sequentially, i.e. with defined time interval relative to one another, such that at no point in time of the sequence are different RF pulses radiated simultaneously or overlapping, and the sequence of the RF pulses causes a polarization transfer of the two involved atomic nucleus types (A), (X).

Abstract: A volume coil for a magnetic resonance (MR) tomography apparatus has a number of array coils or coil parts arranged on at least one coil carrier. The coil carrier annularly encloses or the coil carriers annularly encloses or enclose a cross-sectional area that can be varied by modifying the position of the coil carriers or parts thereof relative to one another.

Abstract: In a method for switching a localized saturation pulse in magnetic resonance spectroscopy or magnetic resonance imaging, magnetic field gradients are switched during the saturation pulse, with the steps of establishing the examination region, establishing the position of the saturation pulse relative to the examination region, determining the spectral position of the signal to be saturated, and selecting the magnetic field gradients dependent on the position of the saturation pulse relative to the examination region and dependent on the spectral position of the signal to be saturated.

Abstract: A volume coil for a magnetic resonance (MR) tomography apparatus has a number of array coils or coil parts arranged on at least one coil carrier. The coil carrier annularly encloses or the coil carriers annularly encloses or enclose a cross-sectional area that can be varied by modifying the position of the coil carriers or parts thereof relative to one another.

Abstract: In a method and apparatus for detection improvement of a weakly-sensitive atomic nucleus type in MR spectroscopy data acquisition using polarization transfer for a weakly-sensitive atomic nucleus type (A) with involvement of an MR-active, strongly-sensitive atomic nucleus type (X), all RF pulses are radiated sequentially, i.e. with defined time interval relative to one another, such that at no point in time of the sequence are different RF pulses radiated simultaneously or overlapping, and the sequence of the RF pulses causes a polarization transfer of the two involved atomic nucleus types (A), (X).

Abstract: In a method for switching a localized saturation pulse in magnetic resonance spectroscopy or magnetic resonance imaging, magnetic field gradients are switched during the saturation pulse, with the steps of establishing the examination region, establishing the position of the saturation pulse relative to the examination region, determining the spectral position of the signal to be saturated, and selecting the magnetic field gradients dependent on the position of the saturation pulse relative to the examination region and dependent on the spectral position of the signal to be saturated.

Abstract: An apparatus for cleaving thin rods of glass or quartz comprises a rod cleaving blade (27) and a body (28) carrying the blade. The body is of a material varying its length through application of electric and/or magnetic fields therein. Driving means (31, 33) are adapted to achieve a relatively steady movement of the blade towards a desired cleaving point and a relatively small-amplitude vibratory component of movement towards and away from the cleaving point superimposed to the relatively steady movement by influencing said body electrically and/or magnetically. A driving means is adapted to make the blade vibrate with a frequency below 1 kHz during the cleaving operation.