Abstract: A fiber draw furnace includes a heated section configured to contain and heat a glass source from which an optical fiber is drawn. A lower extended muffle having a first end and a second end. A gas screen is coupled to the second end of the lower extended muffle configured to allow a gas to flow into the lower extended muffle. A reclaim cylinder is coupled to the lower extended muffle including an outer housing defining a reclaim chamber. A plurality of reclaim ports are tangentially coupled to the outer housing and an inner housing is positioned within the outer housing.

Abstract: A fiber draw furnace includes a heated section configured to contain and heat a glass source from which an optical fiber is drawn. A lower extended muffle having a first end and a second end. A gas screen is coupled to the second end of the lower extended muffle configured to allow a gas to flow into the lower extended muffle. A reclaim cylinder is coupled to the lower extended muffle including an outer housing defining a reclaim chamber. A plurality of reclaim ports are tangentially coupled to the outer housing and an inner housing is positioned within the outer housing.

Abstract: A fiber draw furnace includes a heated section configured to contain and heat a glass source from which an optical fiber is drawn. A lower extended muffle having a first end and a second end. A gas screen is coupled to the second end of the lower extended muffle configured to allow a gas to flow into the lower extended muffle. A reclaim cylinder is coupled to the lower extended muffle including an outer housing defining a reclaim chamber. A plurality of reclaim ports are tangentially coupled to the outer housing and an inner housing is positioned within the outer housing.

Abstract: A fiber draw furnace includes a heated section configured to contain and heat a glass source from which an optical fiber is drawn. A lower extended muffle having a first end and a second end. A gas screen is coupled to the second end of the lower extended muffle configured to allow a gas to flow into the lower extended muffle. A reclaim cylinder is coupled to the lower extended muffle including an outer housing defining a reclaim chamber. A plurality of reclaim ports are tangentially coupled to the outer housing and an inner housing is positioned within the outer housing.

Abstract: Methods for characterizing two-dimensional concept drawings are disclosed. The concept drawings comprise cross-sections intersecting at cross-hairs. The method comprises: determining, for each cross-section: a plane on which the cross-section is located, the plane having a normal vector in a three-dimensional coordinate system; and, for each cross-hair on the cross-section, a tangent vector in the three-dimensional coordinate system which is tangent to the cross-section at the cross-hair. For each cross-hair comprising ith and jth intersecting cross-sections, one or more constraints are satisfied, the constraints comprising: the normal vector ni of the plane on which the ith cross-section is located is at least approximately orthogonal to the normal vector nj of the plane on which the jth cross-section is located; and the tangent vector tij to the ith cross-section at the cross-hair is at least approximately orthogonal to the tangent vector tji to the jth cross-section at the cross-hair.

Abstract: Methods for characterizing two-dimensional concept drawings are disclosed. The concept drawings comprise cross-sections intersecting at cross-hairs. The method comprises: determining, for each cross-section: a plane on which the cross-section is located, the plane having a normal vector in a three-dimensional coordinate system; and, for each cross-hair on the cross-section, a tangent vector in the three-dimensional coordinate system which is tangent to the cross-section at the cross-hair. For each cross-hair comprising ith and jth intersecting cross-sections, one or more constraints are satisfied, the constraints comprising: the normal vector ni of the plane on which the ith cross-section is located is at least approximately orthogonal to the normal vector nj of the plane on which the jth cross-section is located; and the tangent vector tij to the ith cross-section at the cross-hair is at least approximately orthogonal to the tangent vector tji to the jth cross-section at the cross-hair.

Abstract: Methods for characterizing two-dimensional concept drawings are disclosed. The concept drawings comprise cross-sections intersecting at cross-hairs. The method comprises: determining, for each cross-section: a plane on which the cross-section is located, the plane having a normal vector in a three-dimensional coordinate system; and, for each cross-hair on the cross-section, a tangent vector in the three-dimensional coordinate system which is tangent to the cross-section at the cross-hair. For each cross-hair comprising ith and jth intersecting cross-sections, one or more constraints are satisfied, the constraints comprising: the normal vector ni of the plane on which the ith cross-section is located is at least approximately orthogonal to the normal vector nj of the plane on which the jth cross-section is located; and the tangent vector tij to the ith cross-section at the cross-hair is at least approximately orthogonal to the tangent vector tji to the jth cross-section at the cross-hair.

Abstract: Methods for characterizing two-dimensional concept drawings are disclosed. The concept drawings comprise cross-sections intersecting at cross-hairs. The method comprises: determining, for each cross-section: a plane on which the cross-section is located, the plane having a normal vector in a three-dimensional coordinate system; and, for each cross-hair on the cross-section, a tangent vector in the three-dimensional coordinate system which is tangent to the cross-section at the cross-hair. For each cross-hair comprising ith and jth intersecting cross-sections, one or more constraints are satisfied, the constraints comprising: the normal vector ni of the plane on which the ith cross-section is located is at least approximately orthogonal to the normal vector nj of the plane on which the jth cross-section is located; and the tangent vector tij to the ith cross-section at the cross-hair is at least approximately orthogonal to the tangent vector tji to the jth cross-section at the cross-hair.