The invention relates to a winding device (100) for winding a fibre coil, comprising a coil carrier (110) for wrapping with fibre (210) in order to produce a coil body (220) made of wound fibres (210), a fibre supply (120) for supplying a fibre (210) for wrapping the coil carrier (110), and an adhesive device (130) for producing droplets of adhesive (140) for bonding the outermost layer of fibres (210) on the coil body (220) to fibres (210) freshly laid onto the coil body (220).

The invention relates to a winding device (100) for winding a fibre coil, comprising a coil carrier (110) for wrapping with fibre (210) in order to produce a coil body (220) made of wound fibres (210), a fibre supply (120) for supplying a fibre (210) for wrapping the coil carrier (110), and an adhesive device (130) for producing droplets of adhesive (140) for bonding the outermost layer of fibres (210) on the coil body (220) to fibres (210) freshly laid onto the coil body (220).

The invention discloses a preparation method and device of active microcrystalline fiber, place the prefabricated rod in the drawing furnace for wire drawing, the drawn fiber is induced by magnetic field in uncoated state and combined with laser treatment technology, the laser beam is focused on the fiber and recrystallized after laser treatment to obtain active microcrystalline fiber. Appropriate laser processing power directly affects the silicate glass fiber in the crystal structure, type, degree of crystallinity, grain size, content, and how much residual phase of glass. Induced by external magnetic field, the thermodynamics and dynamics of crystallization process are changed, make the crystal size distribution is better and uniform, reduce the phenomenon of condensation and makes the grain size is smaller.

A method and corresponding apparatus for processing optical fiber include directing light from a directed light source toward an optical fiber on a fiber draw. A fiber core of the optical fiber is heated, using at least the light from the directed light source, to a fiber core temperature within a glass transformation temperature range of the fiber core. The method can be used to reduce fictive temperature of the fiber core, with Rayleigh scattering being reduced, leading to lower attenuation losses in the fiber core.

A method and corresponding apparatus for processing optical fiber include directing light from a directed light source toward an optical fiber on a fiber draw. A fiber core of the optical fiber is heated, using at least the light from the directed light source, to a fiber core temperature within a glass transformation temperature range of the fiber core. The method can be used to reduce fictive temperature of the fiber core, with Rayleigh scattering being reduced, leading to lower attenuation losses in the fiber core.

Example systems described herein are configured to manage a continuous scrim-glass web slit from a side of a continuous glass web. For instance, a system may include a first roller, a nipping roller, and a breaker. The first roller is configured to support the continuous scrim-glass web. The nipping roller is configured to isolate vibration originating from the continuous scrim-glass web by applying pressure onto the continuous scrim-glass web that is threaded between the nipping roller and the first roller. The breaker is configured to intermittently break portions of the continuous scrim-glass web from the continuous scrim-glass web while the continuous scrim-glass web traverses between the nipping roller and the first roller by applying a force to the continuous scrim-glass web.

Example systems described herein are configured to manage a continuous scrim-glass web slit from a side of a continuous glass web. For instance, a system may include a first roller, a nipping roller, and a breaker. The first roller is configured to support the continuous scrim-glass web. The nipping roller is configured to isolate vibration originating from the continuous scrim-glass web by applying pressure onto the continuous scrim-glass web that is threaded between the nipping roller and the first roller. The breaker is configured to intermittently break portions of the continuous scrim-glass web from the continuous scrim-glass web while the continuous scrim-glass web traverses between the nipping roller and the first roller by applying a force to the continuous scrim-glass web.

The invention discloses a preparation method and device of active microcrystalline fiber, place the prefabricated rod in the drawing furnace for wire drawing, the drawn fiber is induced by magnetic field in uncoated state and combined with laser treatment technology, the laser beam is focused on the fiber and recrystallized after laser treatment to obtain active microcrystalline fiber. Appropriate laser processing power directly affects the silicate glass fiber in the crystal structure, type, degree of crystallinity, grain size, content, and how much residual phase of glass. Induced by external magnetic field, the thermodynamics and dynamics of crystallization process are changed, make the crystal size distribution is better and uniform, reduce the phenomenon of condensation and makes the grain size is smaller.

A method for manufacturing an optical fiber includes: heating an optical fiber preform to draw glass fiber; measuring an outer diameter of the glass fiber to obtain a function of time; transforming the function of time into a function of frequency; identifying a first peak caused by a first drawing condition and a second peak caused by a second drawing condition in the function of frequency; and adjusting the second drawing condition so as to satisfy fn<fm−wm/2 or fn>fm+wm/2, where fm is a frequency of the first peak, wm is a full width at half maximum of the first peak, and fn is a frequency of the second peak.

A method for manufacturing an optical fiber includes: heating an optical fiber preform to draw glass fiber; measuring an outer diameter of the glass fiber to obtain a function of time; transforming the function of time into a function of frequency; identifying a first peak caused by a first drawing condition and a second peak caused by a second drawing condition in the function of frequency; and adjusting the second drawing condition so as to satisfy fn<fm−wm/2 or fn>fm+wm/2, where fm is a frequency of the first peak, wm is a full width at half maximum of the first peak, and fn is a frequency of the second peak.