ST Bare Fiber Optic Adapter Enable Quick Terminate Fiber
The Bare Fiber Adapter is typically used for temporarily connecting
bare fiber with all standard SMA, ST, SC, LC and FC connectors.
Bare fiber adapter are used as the medium to link the bare optical
fiber to fiber optic test equipment. You can simply strip, cleave,
clean and insert the fiber, without the hassle of epoxy and epoxy
Reels of cable should always be tested before installation. Using a
bare fiber adapter to quickly terminate individual fibers of a
cable is an easy way to complete these test. To install first
strip, clean and cleave fiber. Insert the fiber through rear of
connector. Fiber should be flush with the end of the ferrule end
face not past. Clean connector end face and connect to test lead.
Perform OTDR tests.
Note: We do not recommend connecting bare fiber adapters directly
to test equipment ferrules. Use a patch cable or launch cable to
connect directly to test equipment then connect to the bare fiber
adapter. Broken fibers can be removed with piano wire (included)
- Connect Fibers Quickly to your Important Equipment
- These adapters are very useful for connecting fibers to power
meters, optical time-domain reflectometers (OTDRs) and a variety of
other instruments, enabling in-situ functional testing without
having to attach a permanent connector.
- Great Precision up to 900 µm Fiber
- The bare fiber is secured in place with a special precision cut
foam pad to ensure kink and diffusion free operation, and
repeatable measurements. Fibers with buffer sizes of up to 900 µm
can be accommodated.
- Single-mode and Multimode Adapter Kits are also Available
- These kits contain a single adapter body, FC, SC, and ST
interchangeable connector tips, a universal mating sleeve for quick
ferrule-to-ferrule connections and a fiber stop to ensure that bare
cleaved fibers are flush with the front of the connector ferrule.
Piano wires for cleaning blocked ferrules are included with all
- Briefly connect to Light Sources, Power Meters, OTDRs, Extinction
Ratio Meters, and a variety of other equipment for testing and
- Test unterminated fiber and fiber spools
- Installation and repair work
- If you are using the bare fiber adaptor with unjacketed fiber,
proceed to step. If you are using cabled fibers, strip at least 3
inches of the cable’s outer jacket and cut away the exposed
strength members (usually Kevlar fibers near the stripped edge).
- Strip a sufficient amount of the buffer to allow for fiber
insertion. The length of buffer stripped should be approximately 15
mm to 20 mm.
- Clean the exposed cladding with acetone and/or isopropyl alcohol
- a. Magnetic clamp: Flip open the magnetic clamp. Push the stripped
fiber through until the buffer stops the fiber. At this point flip
shut the magnetic clamp to hold the fiber in place.
- b. Spring clamp: Depress the spring-loaded buffer clamping
mechanism and insert the stripped fiber into the acceptance hole.
Push the stripped fiber through until the buffer stops the fiber.
At this point release the buffer clamping mechanism, to hold the
fiber in place.
- Use a cleaving pen to gently score the fiber as close to the
ferrule end as possible. (See Figure 2) Note: If the fiber breaks
during the scoring process, it means that the score was too deep,
which will result in a poor fiber end face and high losses.
- Pull the scored fiber directly up. The scored fiber should separate
cleanly at the score point. Note: Always pull the fiber directly
up. Failure to do so will result in a poor fiber end face and high
- Inspect the end face with an eye loupe and if necessary, adjust the
fiber until it is flush.
- The fiber is now ready for use. Insert the adaptor into the optical
test equipment’s receptacle.
Bare Fiber Optic Adapter, Bare Optical Fiber Adapter