Patent ID: 7969263

Claim:
A method of rotating a fiber wrap without twisting a data cable comprising the steps of: determining the maximum bend radius of the data cable using the equation: 2 ⁢ πΔ ⁢ ⁢ DGD ⁢ c λ wherein λ is optical wavelength and Δ ⁢ ⁢ DGD = 0.5 ⁢ C s ⁡ ( r R 2 ) 2 ⁢ Δ ⁢ ⁢ L c - 0.5 ⁢ C s ⁡ ( r R 1 ) 2 ⁢ Δ ⁢ ⁢ L c wherein C s is the stress-optics coefficient and c is the speed of light, R 1 is the bend radius at the end of the wrap motion, R 2 is the bend radius at the start of the wrap motion, r is the radii of the sun cylinder and the planetary cylinder, and Δ ⁢ ⁢ L = 10 360 ⁢ 2 ⁢ π ⁢ ⁢ R 2 ; passing the data cable through a central axel; passing the data cable out of the central axel into a slot in a lower portion of a sun cylinder; wrapping the data cable at least part way around the lower portion of the sun cylinder; routing the data cable into a grove on a face of the lower portion of the sun cylinder; passing the data cable into a channel in the outer surface of an upper portion of the sun cylinder; wrapping the data cable around the upper portion of sun cylinder at least one time; passing the data cable into a channel in the surface of a planetary cylinder; wrapping the data cable at least partly around the planetary cylinder; passing the data cable into a channel in an inner surface of an outer housing; and passing the data cable through a slot in the outer housing.