How to connect fiber optic cable after fiber optic patch cord

After connecting a fiber optic patch cord, you can extend or join fiber cables using proper splicing or connectorization techniques to ensure a continuous, low-loss optical path.

Step 1: Prepare the Fiber Cable

Before connecting additional fiber optic cables, strip the outer jacket and buffer coating carefully to expose the bare fiber, typically 125 µm in diameter. Use a fiber optic stripper and avoid touching the glass core. Clean the exposed fiber with isopropyl alcohol and lint-free swabs to remove dust, oils, or residue, and inspect under a microscope for defects or contamination .

Step 2: Choose the Connection Method

There are two main methods to connect fiber optic cables: 1. Fusion Splicing

• Align the two fiber ends precisely using a fusion splicer.
• The splicer fuses the fibers together with an electric arc, creating a permanent, low-loss connection.
• This method is ideal for long-distance or high-performance networks because it minimizes signal loss and reflection . 2. Mechanical Splicing
• Use a mechanical splice kit to hold the fibers in precise alignment with an index-matching gel.
• This method is faster and allows for temporary or field connections but typically has slightly higher insertion loss than fusion splicing .

Step 3: Cleaving the Fiber

For both splicing methods, cleave the fiber ends to produce a flat, perpendicular surface. Proper cleaving is critical to ensure minimal signal loss. Use a fiber cleaver and inspect the cleave under magnification to confirm a clean cut .

Step 4: Connectorization (Optional)

If you prefer a detachable connection instead of a permanent splice, you can attach field-installable connectors (LC, SC, ST, or MTP/MPO). Insert the cleaved fiber into the connector, secure it with a crimp or adhesive as required, and ensure proper alignment. Test the connection with a visual fault locator (VFL) or optical power meter to verify performance .

Step 5: Cable Management

After connecting the fibers, route the cables properly to prevent bending beyond the minimum radius, avoid crossing multiple trays, and secure excess fiber in storage loops. Use hook-and-loop ties and protective tubing when routing between cabinets to prevent crushing or damage .

Step 6: Testing the Connection

Finally, test the connection using an optical power meter, OTDR, or VFL to ensure low insertion loss and proper alignment. This step confirms that the fiber link is continuous and meets network performance standards . By following these steps—preparation, splicing or connectorization, proper routing, and testing—you can reliably connect fiber optic cables after a patch cord connection, ensuring optimal network performance and minimal signal loss.