Optical fibre delay line set - has individual delay lines wound in spiral in given plane with spiral lying along common winding axis

摘要

The delay line set has each of the individual delay lines (L1, L2, ..., L10) wound in a spiral in a given plane, with the individual spirals lying adjacent one another along a common winding axis (2). The delay lines exhibit different lengths, with the longest (L10) and the shortest (L1), the second longest (L9) and the second shortest (L2) etc. wound one behind the other in a common plane. The corresponding spiral pairs lying adjacent one another along the common winding axis (2). The leads associated with each pair of adjacent spirals lie between the spirals, or the spiral pairs in a common plane. ADVANTAGE - Compact delay line set with unfiorm thermal characteristics.