Description

Regular 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.

Specifications: Lambda-plus fibers are based on a custom, high NA and 200µm core optical fiber.

N.B.: Lambda-plus fiber light emission/collection properties are guaranteed only when using OptogeniX patch cords provided with the equipment.

Download LightSpread software to estimate how the light emitted by a Lambda fiber is distributed in the brain tissue [1, 2].

References
[1] L. Wang, et al., “MCML—Monte Carlo modeling of light transport in multi-layered tissues“, Computer Methods and Programs in biomedicine (1995).
[2] J. M. Stujenske, et al., “Modeling the spatiotemporal dynamics of light and heat propagation for in vivo optogenetics“, Cell Reports (2015).