Losses from non-splice are usually caused by bending of the fiber, insertion loss of connectors, reflections at the end of the fiber, etc. The following are some suggestions to solve the loss generated by non-splice:
1. Control the bending radius of the optical fiber: Follow the minimum bending radius requirement of the optical fiber and avoid over-bending the fiber. When an optical fiber is subjected to a large bend with a bend radius comparable to its core diameter, its transmission characteristics change. A large number of conducted modes are converted into radiated modes, which do not continue to be transmitted but enter the cladding to be absorbed by the coating or cladding, thus causing additional loss in the fiber. There are two types of bending loss in optical fiber: macrobending loss and microbending loss.
Use proper fiber optic cable management practices to ensure that the bend radius of the fiber is within the recommended range.
2. Use low insertion loss connectors: Choose high quality connectors with low insertion loss, such as PC (physical contact) or APC (chamfered physical contact) connectors. This reduces insertion loss and provides better connection performance.
3. Clean and inspect the connectors: Clean the connectors regularly to ensure that the connector end faces are free of dust, dirt or contaminants. Use proper cleaning tools and methods to keep the connectors in top condition. Check the insertion loss and return loss of connectors and clean or replace them if there are problems.
4. Use Anti-Reflection Coating: Applying Anti-Reflection Coating (AR Coating) on fiber ends or connector end faces can reduce reflection loss.AR Coating reduces the reflection of optical signals between connectors and improves transmission efficiency.
5. Use fiber optic pigtails: In order to reduce the loss generated by the connector, fiber optic pigtails can be used. A fiber optic pigtail is a pre-connected piece of fiber that acts as an extension of the connector, reducing direct contact between connectors.
6. Regular testing and maintenance: Perform regular optical power tests and OTDR tests to monitor changes in loss and identify any potential problems. Regularly check and maintain the integrity of the fiber optic connection to ensure the reliability of the connection.
7. Training and proper operation: Train operators to ensure they understand the proper operating methods and techniques to minimize the risk of non-splice losses.
By taking these measures, losses from non-splice can be minimized and the high quality and reliability of fiber optic connections can be ensured.
