A first device (; 204; 104 304) for jointing an optical fiber 228 and the second optical fiber (232) relates to and method, the apparatus comprises a composite cable (202), the composite cable is a power cable 206, a first optical fiber cable (226) having a first optical fiber, and a second optical fiber cable (231) having a second optical fiber, the apparatus comprising: a first routing device (236a) and the including a second routing device (236b), wherein each routing unit is a second axis 240, as being arranged to change the direction of the optical fiber path, the first optical fiber portion of the first axis and aligned from a first axis (238) 242, the second axis aligned with the second integral with the optical fiber part 244, and the first optical fiber portion and the second optical fiber portion and the arc 248 between the first optical fiber portion and the second optical fiber portion an intermediate optical fiber portion (246) extending through, and wherein the intermediate fiber portion of the zone of the arc has a reduced diameter compared to the diameter of the first optical fiber portion and the second optical fiber portion, said first optical fiber and optically connected to the first optical fiber portion of the first routing device, the second optical fiber is optically connected to the first optical fiber portion of the second routing device, the second optical fiber portion of the first routing device, It is is optically connected to the second optical fiber portion of the second routing device.