| 摘要 |
A method and apparatus are described for efficient and economical cooling of drawn optical fibers prior to coating with resins. Optimum cooling is achieved employing a tubular cooling device with multiple cooling stages using gaseous coolants. A first stage uses a gas essentially free of helium while a second stage uses a helium-containing gas. The cooling apparatus includes a tubular device having a longitudinal axis, an inlet and outlet for passage of a drawn optical fiber, a wall extending transverse to the longitudinal axis of the cooling device dividing the space between the inlet and outlet into at least two cooling compartments, where the wall has an aperture to allow for passage of the fiber, means for passing gaseous coolant into the compartments, a jacket surrounding the compartments defining a space to circulate a cooling fluid, and porous means for minimizing flow-induced vibration of the fiber.
|
