A Cold Joint Fiber Optic Fixing Ruler is a precision tool used to align and secure optical fibers in a V-groove for mechanical (cold) splicing without heat or welding.

Purpose and Function

The cold joint fixing ruler is part of a mechanical fiber optic splicing system, which allows two optical fibers to be joined without fusion splicing or heat shrink protection. The fibers are placed in a high-precision V-shaped groove, ensuring the fiber cores are aligned accurately for minimal signal loss. This method is ideal for quick repairs, temporary connections, or field installations where fusion splicing equipment is unavailable .

Components and Usage

Cold joint kits often include:

• Fiber cutter: Ensures clean, perpendicular fiber ends for optimal alignment .
• Fiber stripper or Miller pliers: Removes protective coatings without damaging the fiber core .
• V-groove holder or fixing ruler: Aligns fibers precisely and holds them in place during connection .
• Peel opener or adjustable ruler: Helps measure and strip fibers to the correct length for insertion into the V-groove .
• Red light pen or optical power meter: Optional tools for testing connectivity and signal strength after splicing .

Advantages

• No heat or welding required, making it safer and faster for field work .
• Reusable and adjustable, allowing multiple fibers to be aligned with the same tool.
• Portable, suitable for on-site repairs or temporary fiber connections .

Applications

• Optical fiber-to-fiber docking.
• Optical cable interconnections.
• Temporary splicing for testing with OTDRs or other diagnostic equipment .
• Quick repairs in workshops, construction sites, or homes where precision alignment is needed . In summary, the Cold Joint Fiber Optic Fixing Ruler is a key component in mechanical fiber splicing, providing precise alignment and secure holding of fibers without the need for fusion splicing, making it essential for field repairs and temporary connections.