Optical Fiber Identifiers

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Fiber identifier Test for different typs of cables example

Optical fiber identifier is widely used in optical cable construction and maintenance. Using macrobend technology to do non-destructive testing on the line, you can measure the signal direction and power to avoid line interruption caused by misoperation. Macrobending measurement is to use the weak light signal leaked when the fiber is bent, and detect the direction and strength of the light signal by judging the direction and strength of the leakage. The measurement process does not damage the fiber, does not interrupt the communication, and can directly detect 0.25mm bare fiber, 0.9mm tight tube fiber and 2.5mm jumper. The optical fiber identification instrument can detect the fixed audio signal loaded in the optical signal, CW, 270Hz, 1KHz and 2KHz, to identify the specific optical fiber, and can quickly find the required optical fiber. The optical fiber identification instrument has a low battery monitoring function, and the optical phone has a battery monitoring function. When the battery power is low, it will send an indication to remind the user to replace the battery to avoid interruption of use.

Fiber identifiers act as the infrared eyes of the fiber installer or technician. By placing a tiny macrobend in an optical fiber or cable, it detects infrared light passing through the fiber and determines the direction of travel of the light. Some fiber identifiers can also detect test pulses from infrared (800-1700nm) sources or measure power in the fiber. Fiber optic identifiers typically contain two photodiodes that detect infrared light. The photodiodes are mounted so that they are at the end opposite the macro end of the optical fiber or fiber optic cable tested; this is often named as the optical head. The photodiode assemblies look like two small glass lenses.

Fiber identifiers are widely compatible to use with most of the indoor fiber cables, such as used with coated fiber, tightly buffered fiber, individual fiber cables, or ribbon cables. Just  place the fibers/cables in the center of the photodiode during testing and it will work. Selecting the correct accessory for the type of fiber or cable under test can often do the trick. Some fiber optic identifiers like the ones from huihongfiber have a proprietary optical head design that requires interchangeable accessories when using different diameter buffers or cables.

To test a fiber or cable with huihongfiber identifier, select the correct accessory as needed and install it on the fiber identifier. For example, if you are testing a 900um tight-buffered fiber with a fiber identifier, center the tight-buffered fiber into the photodiode assembly and insert the macrobend into the tight-buffered fiber by pushing the slider into the tight-buffered fiber and compressing it. A directional arrow on the fiber identifier should light up if enough infrared light energy has passed through the fiber. Directional arrows point in the direction the light is traveling. If the test pulse is transmitted through the fiber, the direction arrow and test pulse indicator should light up.  With built in power measurement function, it will display the optical power level.

Fiber identifiers work best with coated or tightly buffered fibers. Just like the visual fault locator, fiber identifiers may not always work with individual fiber cables. How well it fits into the cable depends on the number of strength members in the cable, the jacket thickness, jacket color, and the available optical power of the fiber. Fiber identifiers can be used alone or in combination with an OTDR. It can be used to identify traffic in a working fiber link or used to help identify the location of a fault.

In the daily maintenance fiber optic work, it is often necessary to cut the optical fiber cable. In order to accurately judge the use of the fiber core and the relationship between receiving and receiving light, the fiber optic identifier is often used, which can accurately judge the optical fiber in use (whether there is light), if the optical fiber is in use, it will display the readout optical power value and the direction of receiving and receiving light, so that the technicians can judge the optical fiber usage status easily.

Huihongfiber is your best factory partner for fiber optic testers. We have fiber optic identifiers, power meter/ light sources, visual fault locators, talk sets, etc for your fiber test needs.