Why do you need Secondary Coating Line and exactly what can it do for you If you have experienced a telephone company technician working on the phone jump box outside your home, you ought to have noticed a special 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 proper wire, he connects the wire into your house.
During fiber optic network installation, maintenance, or restoration, it is also often essential to identify a particular fiber without disrupting live service. This battery powered instrument seems like an extended handheld bar and is also 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 in to the slot, then the fiber identifier performs a macro-bend on the fiber. The macro-bend makes some light leak out from the fiber as well as the optical sensor detects it. The detector can detect both the existence of light and the direction of light.
A fiber optic identifier can detect “no signal”, “tone” or “traffic” plus it indicates the traffic direction.
The optical signal loss induced by this strategy is so small, usually at 1dB level, it doesn’t cause any trouble on the live traffic.
What type of Optical Fiber Proof-Testing Machine will 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 have to change a head adapter so that you can support all these kinds of fibers and cables. Although some other models are cleverly designed plus they don’t must alter the head adapter at all. Some models only support single mode fibers as well as others supports both single mode and multimode fibers.
What is relative power measurement? Most high end fiber optic identifiers include a Liquid crystal display which may display the optical power detected. However, this power measurement cannot be utilized for a accurate absolute power measurement in the optical signal because of inconsistencies in fiber optic cables and also the impact of user technique on the measurements.
But this power measurement may be used to compare power levels on different fiber links that have same type of fiber optic cable. This relative power measurement has a lot of applications as described below.
1. Identification of fibers
The relative power reading could be used to aid in the identification of any live optical fiber.There are several tests that may be performed to isolate the required fiber cable from a team of fibers without taking down the link(s). Three methods that could be used include comparing relative power, inducing macrobends, and varying the optical power from the source. No single technique is best or necessarily definitive. Using one or a mix of these techniques may be needed to isolate the fiber.
2. Identification of high loss points
Fiber optic identifier’s relative power measurement capability could be used to identify high loss point(s) in a period of fiber. By taking relative power measurements along an area of optical fiber that is suspected of having a high loss point for instance a fracture or tight bend, the change in relative power point out point may be noted. In case a sudden drop or boost in relative power between two points is noted, a higher loss point probably exists in between the two points. The consumer may then narrow in on the point through taking further measurements between the two points.
3. Verify optical splices and connectors
Fiber optic identifier may be used to verify fiber optic connectors and splices. This test must be performed over a lit optical fiber. The optical fiber may be carrying a transmission or be illuminated employing an optical test source. Attach fiber identifier to one side from the optical connector/splice. Read and record the relative optical power. Repeat the measurement on the second side from 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 equal to the optical attenuation in the optical connector/splice. The measurement may be taken several times and averaged to boost accuracy. If the optical fiber identifier indicates high loss, the connector/slice may be defective.
Fiber optic splice closure will be the equipment utilized to offer room for fusion splicing optical fibers. In addition, it provides protection for fused fiber joint point and fiber cables. There are mainly two kinds of closures: vertical type and horizontal type. Quite a number of fiber splice closures are equipped for different applications, such as aerial, duct fiber cables and direct burial. Generally speaking, they are usually utilized in outdoor environment, even underwater.
Fiber Optic Splice Closure Types . For outside plant splice closure, there are two major types: horizontal type and vertical type.
1) Horizontal type – Horizontal type splice closures appear to be flat or cylindrical case. They whzqqc space and protection for optical cable splicing and joint. They can be mounted aerial, buried, or for underground applications. Horizontal types are employed more often than vertical type (dome type) closures.
Most horizontal fiber closure can accommodate numerous Optical Fiber Coloring Machine. They are created to be waterproof and dust proof. They may be found in temperature starting from -40°C to 85°C and may accommodate up to 106 kpa pressure. The cases are often made from high tensile construction plastic.
2) Vertical Type – Vertical kind of fiber optic splice closures appears like a dome, thus they are also called dome types. They satisfy the same specification because the horizontal types. They are equipped for buried applications.