Why do you need Secondary Coating Line and what can it do for you If you have experienced a telephone company technician working on the phone jump box outside your home, you need to have noticed an exclusive handheld phone like instrument. The technician uses it to recognize 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, it is also often essential to identify a particular fiber without disrupting live service. This battery powered instrument seems like a long handheld bar and it is called fiber identifier or live fiber identifier.
So how exactly does it work? There is a slot on the top of a fiber optic identifier. The fiber under test is inserted into the slot, then this fiber identifier performs a macro-bend on the fiber. The macro-bend makes some light leak right out of 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” and it also indicates the traffic direction.
The optical signal loss induced with this strategy is so small, usually at 1dB level, which it doesn’t cause any trouble on the live traffic.
What sort of Optical Fiber Coloring 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 need to change a head adapter in order to support all most of these fibers and cables. While many other models are cleverly designed and they don’t have to alter the head adapter whatsoever. Some models only support single mode fibers yet others supports both single mode and multimode fibers.
Precisely what is relative power measurement? Most top end fiber optic identifiers are equipped with a LCD display which could display the optical power detected. However, this power measurement cannot be used as a accurate absolute power measurement of the optical signal as a result of inconsistencies in fiber optic cables and the impact of user technique on the measurements.
But this power measurement can be used to compare power levels on different fiber links which may have same form of fiber optic cable. This relative power measurement provides extensive applications as described below.
1. Identification of fibers
The relative power reading can be used to assist in the identification of a live optical fiber.There are numerous tests which can be performed to isolate the preferred fiber cable from a small group 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 of the source. No single method is best or necessarily definitive. Using one or a mixture of these methods 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 duration of fiber. If you take relative power measurements along a section of optical fiber which is suspected of obtaining a higher loss point for instance a fracture or tight bend, the modification in relative power indicate point may be noted. If a sudden drop or rise in relative power between two points is noted, a high loss point probably exists in between the two points. The user can then narrow in on the point by taking further measurements 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 must be performed on the lit optical fiber. The optical fiber can be carrying a transmission or perhaps be illuminated using an optical test source. Attach fiber identifier to a single side from the optical connector/splice. Read and record the relative optical power. Repeat the measurement on the second side of the connector/splice. Go ahead and take difference between the reading on the second side as well as the first side. The main difference ought to be roughly comparable to the optical attenuation of the optical connector/splice. The measurement could be taken repeatedly and averaged to boost accuracy. In the event the optical fiber identifier indicates high loss, the connector/slice may be defective.
Fiber optic splice closure will be the equipment used to offer room for fusion splicing optical fibers. In addition, it provides protection for fused fiber joint point and fiber cables. You can find mainly two types of closures: vertical type and horizontal type. A large variety of fiber splice closures are designed for different applications, like aerial, duct fiber cables and direct burial. Generally speaking, they may be usually utilized 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 seem like flat or cylindrical case. They whzqqc space and protection for optical cable splicing and joint. They may 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 Sheathing Line. They are made to be waterproof and dust proof. They could be used in temperature ranging from -40°C to 85°C and may accommodate approximately 106 kpa pressure. The cases are usually made of high tensile construction plastic.
2) Vertical Type – Vertical kind of fiber optic splice closures appears like a dome, thus also, they are called dome types. They fulfill the same specification since the horizontal types. They are designed for buried applications.