Fiber Optic Ferrules

Fiber Ferrule's Function

Fiber ferrule acts as a fiber alignment mechanism.

Single fiber ferrule is a long, thin cylinder with a hole bored through at center. The diameter of the hole is slightly larger than the fiber cladding. Typical ferrule hole diameters are 125um, 125.5um and 126um for 125um fiber cladding. After polishing, the end of the fiber is located at the end of the ferrule.

SC Connector Structure
(Notice the Fiber Ferrule at the center)

Fiber Ferrule material

Typical fiber ferrule materials include ceramic, metal, polymer or glass. Zirconia(ceramic) and stainless alloy ferrules are the most popular.

Fiber Ferrule Types

• Ferrule Diameter
• 1.25mm
• 2.5mm
• Ferrule Polish Type
• Air gap
• Flat PC (Physical Contact)
• PC (Physical Contact)
• UPC (Ultra Physical Contact)
• APC (Angled Physical Contact)