When should heat shrink tubing be installed on the fiber?

The correct timing for installing heat shrink tubing is before stripping the plastic coating from the fiber. This step is crucial because it ensures that the tubing is positioned properly on the fiber before any modifications are made. When the tubing is placed on the fiber prior to stripping, it can be slid into the correct position and will be ready to cover the splice once the fiber ends are prepared.

Installing the tubing afterward would complicate the process, as the fiber needs to be stripped and prepared before applying the heat shrink. Additionally, introducing the tubing after the fiber has been processed can lead to potential misalignment and difficulty in achieving a proper seal over the splice, which is essential for maintaining strength and protection from environmental factors.

By understanding the right sequence of actions, technicians ensure efficient preparation and installation, leading to reliable and durable fiber optic connections.