Why do you need SZ Stranding Line and exactly what can it do for you If you have ever seen a telephone company technician working on the phone jump box outside your home, you should have noticed a unique handheld phone like instrument. The technician uses it to distinguish the incoming telephone wires by tapping onto the wires and listening for a tone. Once he finds the correct wire, he connects the wire in your house.
During fiber optic network installation, maintenance, or restoration, additionally it is often required to identify a specific fiber without disrupting live service. This battery powered instrument looks like a lengthy handheld bar and is called fiber identifier or live fiber identifier.
How does it work? There exists a slot on the top of a fiber optic identifier. The fiber under test is inserted to the slot, then your fiber identifier performs a macro-bend on the fiber. The macro-bend makes some light leak out of the fiber and the optical sensor detects it. The detector can detect both the actual existence of light as well as the direction of light.
A fiber optic identifier can detect “no signal”, “tone” or “traffic” and in addition it indicates the traffic direction.
The optical signal loss induced from this strategy is so small, usually at 1dB level, that it doesn’t cause any trouble on the live traffic.
What type of Optical Fiber Proof-Testing Machine can it support? Fiber optic identifiers can detect 250um bare fibers, 900um tight buffered fibers, 2.0mm fiber cables, 3.0mm fiber cables, bare fiber ribbons and jacketed fiber ribbons.
Most fiber identifiers must change a head adapter in order to support all most of these fibers and cables. While some other models are cleverly designed plus they don’t must modify the head adapter whatsoever. Some models only support single mode fibers and others can support both single mode and multimode fibers.
Precisely what is relative power measurement? Most top quality fiber optic identifiers include a LCD display which can display the optical power detected. However, this power measurement cannot be utilized as a accurate absolute power measurement from the optical signal because of inconsistencies in fiber optic cables and also the impact of user technique on the measurements.
But this power measurement can be used to compare power levels on different fiber links which have same kind of fiber optic cable. This relative power measurement has many applications as described below.
1. Identification of fibers
The relative power reading can be used to aid in the identification of any live optical fiber.There are numerous tests which can be performed to isolate the desired fiber cable from a group of fibers without taking along the link(s). Three methods that might be used include comparing relative power, inducing macrobends, and varying the optical power of the source. No single method is best or necessarily definitive. Using one or a mixture of these techniques may be required to isolate the fiber.
2. Identification of high loss points
Fiber optic identifier’s relative power measurement capability may be used to identify high loss point(s) in a length of fiber. Through taking relative power measurements along an area of optical fiber that is suspected of obtaining a higher loss point such as a fracture or tight bend, the change in relative power point to point could be noted. When a sudden drop or increase in relative power between two points is noted, a very high loss point probably exists between the two points. The consumer can then narrow in on the point by taking further measurements in between the two points.
3. Verify optical splices and connectors
Fiber optic identifier can be used to verify fiber optic connectors and splices. This test has to be performed on the lit optical fiber. The optical fiber can be carrying a transmission or even be illuminated employing an optical test source. Attach fiber identifier to one side of the optical connector/splice. Read and record the relative optical power. Repeat the measurement on the second side in the connector/splice. Go ahead and take distinction between the reading on the second side as well as the first side. The real difference needs to be roughly comparable to the optical attenuation in the optical connector/splice. The measurement may be taken repeatedly and averaged to improve accuracy. If the optical fiber identifier indicates high loss, the connector/slice may be defective.
Fiber optic splice closure will be the equipment employed to offer room for fusion splicing optical fibers. It also provides protection for fused fiber joint point and fiber cables. You can find mainly two types of closures: vertical type and horizontal type. Quite a number of fiber splice closures are designed for different applications, such as aerial, duct fiber cables and direct burial. In most cases, they are usually used in outdoor environment, even underwater.
Fiber Optic Splice Closure Types . For outside plant splice closure, there are 2 major types: horizontal type and vertical type.
1) Horizontal type – Horizontal type splice closures look like flat or cylindrical case. They whzqqc space and protection for optical cable splicing and joint. They could be mounted aerial, buried, or for underground applications. Horizontal types are used more frequently than vertical type (dome type) closures.
Most horizontal fiber closure can accommodate countless Secondary Coating Line. They are made to be waterproof and dirt proof. They may be utilized in temperature starting from -40°C to 85°C and may accommodate approximately 106 kpa pressure. The cases are often made of high tensile construction plastic.
2) Vertical Type – Vertical form of fiber optic splice closures appears like a dome, thus they are also called dome types. They fulfill the same specification since the horizontal types. They are designed for buried applications.