FC Bare Fiber Adapter – Quick Test Connector for Singlemode & Multimode Fiber

Fast and Easy Temporary Connections for Bare Optical Fibers

The MEFIBEROPTIC FC Bare Fiber Adapter provides a simple and efficient solution for establishing temporary optical connections with unterminated (bare) optical fibers. Designed for convenience and reusability, this adapter is an indispensable tool for fiber optic technicians, engineers, and lab environments for quick testing, system diagnostics, or emergency fiber link restoration.

Simply strip and cleave your 125µm  cladding optical fiber (singlemode or multimode) and insert it into the adapter. The internal precision mechanism gently secures the fiber, aligning it with the FC connector interface. This allows for rapid connection to Optical Time Domain Reflectometers (OTDRs), optical power meters, light sources, or other FC-equipped fiber optic devices without the time-consuming process of installing a permanent connector.

Constructed with a durable metal housing and a high-quality ferrule/capillary, this FC bare fiber adapter is built for repeated use while aiming to minimize insertion loss for temporary connections. It’s an ideal solution for continuity testing, fault locating, and performance verification of fiber optic cables before or during installation.

Key Features & Benefits:

• Quick Fiber Connection: Enables fast, temporary connections to bare optical fibers in seconds.
• No Epoxy or Polishing Needed: Eliminates the need for adhesives, curing, and polishing, saving significant time.
• Universal Compatibility: Designed for standard 125µm cladding singlemode (SM) and multimode (MM) fibers. (there are different models for SM and MM for optimal performance)
• FC Connector Interface: Standard FC/PC type connector for compatibility with most test equipment and systems. (Specify if FC/APC version is available/different)
• Reusable Design: Durable construction allows for multiple uses, offering excellent value.
• Cost-Effective Testing: Reduces the need for sacrificial pre-terminated pigtails for testing.
• Portable & Convenient: Compact design, easy to carry and use in the field or lab.
• Stable Clamping: Internal mechanism provides secure fiber holding for reliable measurements. 
  

Applications:

• OTDR Testing and Fault Location
• Optical Power Meter and Light Source Measurements
• Continuity Checks on Bare Fibers
• Fiber Optic Cable Acceptance Testing
• Temporary System Setups and Demonstrations
• Emergency Fiber Link Restoration (temporary patch)
• Fiber Optic Training and Education Labs

Technical Specifications:

• Adapter Type: FC Bare Fiber Adapter
• Compatible Fiber Types: Singlemode (9/125µm ), Multimode (50/125µm 62.5/125µm )
• Compatible Fiber Cladding Diameter: 125µm125
  
• Compatible Fiber Coating Diameter: 250µm250
  
• Connector Style: FC/PC (Male) ( different, e.g., FC/APC)
• Typical Insertion Loss: <1.0dB (variable depending on fiber cleave quality and insertion) 
  
• Durability/Mating Cycles: >100>  insertions
• Housing Material: Metal (e.g., Nickel-plated Brass)
• Operating Temperature: −20°C- to +70°C+  (Typical, adjust if specific)

Important Note: For optimal performance, ensure the bare fiber is properly stripped, cleaned, and cleaved with a high-quality cleaver before insertion. The quality of the fiber end-face significantly impacts the connection loss.

5. Proposed FAQ Section:

Frequently Asked Questions (FAQ) for FC Bare Fiber Adapter:

• Q1: Can I use this adapter for both singlemode and multimode fibers?
  • A1: Yes, this FC bare fiber adapter is designed to accept standard $125\text{µm}$ cladding fibers, making it suitable for both singlemode and multimode applications for temporary testing. (If you have separate SM and MM versions for better performance, clarify here).
• Q2: What is the typical insertion loss I can expect?
  • A2: The insertion loss can vary depending on the quality of your fiber cleave and how carefully the fiber is inserted. Typically, you can expect less than $1.0\text{dB}$, but it can be higher. For precise measurements, ensure a clean, perpendicular cleave.
• Q3: How many times can I reuse this adapter?
  • A3: This adapter is designed for multiple uses. While the exact number of insertions can vary with care and fiber cleanliness, it should provide reliable connections for over 100 insertions. Clean the adapter periodically if debris accumulates.
• Q4: Do I need any special tools to use this adapter?
  • A4: You will need standard fiber preparation tools: a fiber stripper (to remove the $250\text{µm}$ coating), fiber optic cleaning wipes/solution, and a precision fiber cleaver to create a good quality end-face on the bare fiber.
• Q5: Does this adapter contain index matching gel?
  • A5: (Answer based on product specifics) Example: “Yes, this adapter comes with pre-applied index matching gel internally to help reduce fresnel reflections and improve coupling efficiency.” OR “No, this adapter does not use index matching gel. A good cleave is essential for performance.” OR “Index matching gel can be optionally applied to the fiber tip before insertion if desired.”
• Q6: Is this an FC/PC or FC/APC adapter?
  • A6: This is an FC/PC (Physical Contact) bare fiber adapter. If you require an FC/APC (Angled Physical Contact) version, please check our other product listings or contact us.

6. Proposed Usage/Care Guide:

Quick Usage & Care Instructions:

1. Prepare the Fiber:
   • Carefully strip approximately 1-1.5 inches (25-38 mm) of the buffer coating from the fiber end to expose the $250\text{µm}$ coating.
   • Strip about 0.5-0.75 inches (12-19 mm) of the $250\text{µm}$ coating to expose the $125\text{µm}$ bare fiber cladding.
   • Clean the bare fiber cladding thoroughly with an appropriate fiber optic cleaning solvent and lint-free wipes.
   • Using a precision fiber cleaver, cleave the fiber to the recommended length (typically 8-12mm, check adapter’s specific requirement if any). Ensure a flat, perpendicular cleave.
2. Insert the Fiber:
   • Gently open the adapter’s clamping mechanism (if it’s a lever or screw type) or prepare to insert.
   • Carefully insert the cleaved bare fiber into the adapter’s fiber entry point until it gently stops. Avoid excessive force.
   • Secure the fiber using the adapter’s clamping mechanism (e.g., release lever, tighten screw cap).
3. Connect to Equipment: Connect the FC connector end of the bare fiber adapter to your test equipment (OTDR, power meter, etc.).
4. Removing the Fiber: Carefully release the clamping mechanism and gently withdraw the fiber.
5. Care & Maintenance:
   • Keep the adapter’s connector end capped when not in use to protect the ferrule.
   • Periodically clean the internal capillary/ferrule using appropriate fiber optic cleaning tools (e.g., V-groove cleaner, compressed air for optics) if debris is suspected.
   • Store in a clean, dry place.

Technical specification