What is the difference between Gel filled and Gel free Optic fiber cables?

What is the difference between Gel filled and Gel free Optic fiber cables?

♦Gel-filled cables contain a water-blocking gel that fills the space around the optical fibers. This gel creates a barrier against moisture ingress, protecting the fibers from damage and ensuring optimal performance.
Gel-filled cables are often preferred in harsh environments or outdoor installations where exposure to moisture is a concern.

♦♦Advantages:
♦Superior resistance to moisture.
♦Suitable for outdoor or harsh environments.

♦♦Disadvantages:
Can be messier to work with during installation and splicing
May require cleaning of the gel before splicing.

♦Gel-free cables, also known as dry cables, use a different approach to prevent water intrusion. They employ a water-blocking binder or tape that absorbs any moisture that may enter the cable. This method is generally considered less messy and easier to handle during installation. Gel-free cables are often chosen for indoor applications or where ease of installation is a priority.

♦♦Advantages:
♦Easier to handle and install.
♦Less messy during installation and splicing.

♦♦Disadvantages:
♦May not be as resistant to moisture as gel-filled cables.
♦May require special handling and storage to prevent moisture ingress.

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Source: LinkedIn

Credits: Mr. Ahmed Fawzy Shaaban, CCNA, RCDD®, DCDC®