Fiber sleeves, also known as connector sleeves or ferrules, are protective enclosures designed to house and secure fiber optic connectors. Composed of durable materials such as ceramic or metal, these sleeves shield connectors from external factors that could compromise signal. As a leading supplier and manufacturer of Fiber Optic Splice Sleeves, we've put together this comprehensive guide to help fiber internet providers, ISPs, and telecom integrators understand everything they need to know about these vital components. Key. A fiber adapter sleeve is the alignment component inside an optical adapter that ensures precise mating between two ferrules. The sleeve is responsible for maintaining concentricity, reducing lateral offset, and ensuring that insertion loss and return loss stay within industry requirements.
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