Lambda fibers are provided with strict tolerance (5%) on the active length, while coarser tolerance is allowed on the taper profile. Although taper profile variability has no practical influence on light emission/collection properties in full taper operation, it does affect the variability of the sub-site length both within (intra) the single Lambda fiber and among (inter) fibers with the same nominal active length.
Lambda-plus fibers are Lambda fibers selected with strict tolerance on both taper length and taper profile for a constant sub-site length among fibers of different batches, and are strongly recommended to GalvoStation and ThetaStation users.
N.B.: Lambda-plus fiber specs are guaranteed only when using OptogeniX patch cords provided with the equipment.