Vodka Optical Toslink Fiber-Optic Cable + Mini-Adaptor217 Narrow Aperture Synthetic Fiber Conductors The problem with optical fiber transmission is that dispersed light does get through the Toslink cable, but only after it has taken a longer path, like a pool ball bouncing off the side rails, causing it to arrive later. This delayed part of the signal prevents the computer charged with decoding the information from being decoded properly, or even at all. This reduced bandwidth is a measurable signature