Interchannel isolation is a term used to describe the ability of a cable to prevent undesired optical energy from appearing in one signal path due to the coupling from another signal path. This phenomenon, also known as crosstalk, can occur when multiple cables are located close together, allowing optical energy from one channel to “leak” into another. This effect can be detrimental to a system, as it can lead to errors, distortion, and interference in the received signal.
Interchannel isolation is an important factor to consider when selecting the right cable for a particular application. The ability of a cable to isolate channels is determined by various factors, including the construction of the cable, the materials used, and the quality of the connectors. For example, a cable with a higher-quality jacket, better shielding, and tighter connectors may have better interchannel isolation than a cheaper, lower-quality cable.
Typically, cables with better interchannel isolation will be more expensive than those with lower isolation. However, it is important to consider the cost of the cable relative to the cost of the entire system. In some cases, the cost of the cable may be insignificant compared to the cost of the system, making it worthwhile to invest in a higher-quality cable.
When selecting a cable, it is important to consider the environment in which it will operate. For example, in a crowded, noisy environment, it may be wise to invest in a cable with higher interchannel isolation, as this will help to reduce the effects of crosstalk. On the other hand, if the environment is relatively quiet, a cheaper cable with lower isolation may suffice.