The fiber optic splice protectors play an important role in the optical fiber backbone network due to its excellent performance. How to use optical fiber heat shrink sleeves is particularly important for users. There are mainly 5 steps, taking the fiber optic splice closure as an example.
Step 1：Peel the outer sheath of the optical cable
During the operation, rotate the sheath cutter and pay attention to the cutting. When white polyester tape is seen, stop feeding and remove the cutter.
Step 2: Fix the optical cable and pay attention to the core bundle tube.
After stripping the outer layer of the optical cable, it is necessary to fix the optical cable in the splice closure. Strip the core tube. Prepare for optical fiber fusion. In addition, it should be noted that:
- Core bundle tube shall not be twisted. Before fixing the optical cable, pay attention to the position of the fiber core bundle tube. When the stiffener passes through the fixing screw, the lower part of the stiffener must be a filling bundle tube, not a fiber core bundle tube. The fiber core bundle tube must be on the same side of the stiffener entering the optical fiber receiving tray, and cannot be twisted on the stiffener.
- The length of reinforcement shall be appropriate. After the position of the fiber core bundle tube is determined, the optical cable can be fixed.
- The stripping length of fiber core bundle tube shall be appropriate. After the optical fiber is fixed, the fiber core bundle tube can be peeled. If the stripping length is too long, it will reach the groove of the optical fiber heat shrink tube, and the residual fiber will be damaged when the fiber is coiled; If the stripping length is too short, when the fiber core bundle tube is fixed, the fixing clip will be stuck on the optical fiber, which is easy to damage the optical fiber.
Therefore, it is generally advisable to peel it over two fixed bayonets, and the fiber core bundle tube of this length will not cause stress damage to the fiber, but also can be fixed well. However, the clamp of optical fiber heat shrinkable tube shall not be too tight when fixing, otherwise the optical fiber of the fiber core bundle tube will increase loss due to stress, and the optical fiber will break after a long time, leaving a hidden danger for the project.
Step 3: Fiber Fusion Splice
The connection of optical fiber directly decide the quality and life of the project, and the key is the optical fiber end face. If end face r is smooth and free of burrs or defects, the fusion splicer can be well make joints with good performance. If the end face is unqualified, the fusion splicer will refuse to work, or the joint loss is large, which does not meet the engineering requirements.
Fusion Splicer is the key equipment of optical fiber welding, and it is also a kind of equipment with high precision and high price. In the process of use, the operation must be strictly in accordance with the regulations, otherwise it may cause heavy losses. Special attention shall be paid to the operation procedure, and the length of the optical fiber heat shrinkable tube shall conform to the requirements.
Step 4: Protection of surplus fiber
After the optical fiber is spliced, not only the optical fiber shall be protected by heat shrink tube, but also the residual fiber shall be coiled.
- In the process of fiber winding, the bending radius shall not be too small, generally not less than 4mm. Or else it is easy to cause excessive refraction loss and increased dispersion. Fiber breakage may also occur after a long time.
- When coiling, pay attention to the twisting direction of the optical fiber, which is generally an inverted “8” shape. Pay attention not to twist the optical fiber. After coiling, put all the optical fibers under the baffle of the receiving tray to avoid damage to the optical fiber during packaging.
Step 5: Sealing of the splice closure
In the actual cable distribution project, the sealing of the optical cable splice enclosure is very important. Because if the closure is flooded, there may be tiny cracks on the fiber surface, if it is soaked in water for a long time, the optical fiber will break. Furthermore, most fiber optic splice box are buried underground, so the sealing is very important.
Frequently Asked Questions
Can damaged fiber optic cables be spliced?
If you confirm the fiber optic cable is damaged, you should confirm where it is broken, and how many places are borken, and the one you wan to use is ok or not? You can test it with OTDR, laser pen (visual fault locator) ,OTDR launch cord if long distance, then you can know if you can use or not, when real construction, there is always surplus fiber optic cables.
For example, one day our company’s network was down. After investigation, we found that mice had bitten through the optical cable. So we used a red light pen (VFL) to detect the light leakage point, cut off the optical cable at the back, and then used a fiber fusion machine to fuse the optical cable and an SC pigtail together. Then we directly inserted the SC end into the optical ONU, and the network was connected.
However, the fiber splice joint place is very fragile, so we should use a clear optical fiber sleeve to protect it.
What fiber optic splicers do you use?
Yingda make full range of fiber splice protectors from single fiber sleeve, ribbon fiber sleeve and ftth drop cable sleeve, size from 15mm, 20mm, 25mm, 35mm, 40mm 45mm, 60mm 61mm, etc. Welcome inquiry to sales@yingdapc.cn
How to test a fiber optic cable splice?
If you use fusion splicer hot melt termination method, then after the fusion is done, the splice machine will have attenuation loss data show on the screen of the machine. If it is not used fusion splicer, you can test the OTDR, power meter to test as well. And if only want to see if the light can go through, laser pen is ok.
How to fix a fiber optic cable at home?
Now all fiber to home project are build by operators and their construction workers, so if you want to fix a fiber optic cable at home, you should buy their package, they will come to make for you.
If it is a newly built office building or residential house, the developer will have pre-buried the optical cables when building the house, so you don’t have to pull the optical cables yourself. Hope it can help you.
Even if it is an old house, don’t worry, the staff of the telecommunications company will also set up network safely and quickly for you from the computer room to your home.
Except fiber splice sleeve, how to terminate a fiber optic cable?
There are mainly 3 types of ways to terminate a fiber optic cable, cold mechanical connection, fusion splice, and coupling connection.Please see more in article: What are the fiber termination methods for optical fibers?
