General customers of the fiber optic cable technology is not very familiar with, and then how to choose the cable becomes more difficult. The following describes the method of identifying several common cable merits of great guiding significance for how to buy fiber optic cable.
A skin: Indoor cables generally use poly ethylene recorded or flame retardant poly recorded ethylene appearance should be smooth and shiny, with a flexible, easy to peel. Poor low-quality fiber optic cable sheath finish, easy, and sleeve, Kevlar adhesions.
PE sheath outdoor fiber optic cable should be high quality black polyethylene cabling skin smooth, shiny, uniform thickness, no bubbles. Poor-quality fiber optic cable sheath is generally produced using recycled materials, this cable coarse skin, due to many impurities within the raw look cable jacket can find a lot of very fine small pits wow, after some time laying cracking, water seepage.
Fiber Optics: the standard fiber optic cable manufacturer maker of the A-level core, low-cost low-quality fiber optic cable commonly used C-Class, D-grade optical fiber and unsolicited smuggling optical fiber, these fibers are complex sources, the factory longer often already damp discoloration, often mixed with single-mode fiber and multimode fiber, and the general lack of small factories necessary testing equipment, and can not make a judgment of the quality of the optical fiber. Fiber construction in touch often to the naked eye can not distinguish: a very narrow band, the transmission distance is short; uneven thickness not docking and pigtails; Fiber lack of flexibility, the disk fiber curved off.
Strengthen steel wire: formal outdoor fiber optic cable wire manufacturers after phosphating, surface gray, does not increase the hydrogen loss this wire cabling, no rust, high strength. Low-quality fiber optic cable is generally replaced with thin wire or aluminum wire identification method is very easy - the appearance of white pinch in your hand can be bent. Loss of hydrogen production of fiber optic cable with the wire, a long time, hanging cable box two will rust fracture.
Steel armor: the formal manufacturing enterprises using double-sided brush vertical bandage pattern of anti-rust coating steel strip, low-quality fiber optic cable is ordinary iron, usually only one, anti-rust treatment.
Loose tube: loose tube fiber optic cable installed with optical fiber PBT materials should be used, so the casing strength, no deformation, anti-aging. Low-quality fiber optic cable is usually the PVC material production casing, this casing diameter thin hand pinch flat, is tantamount to drink straw.
Fiber paste: Outdoor cables fiber cream can prevent fiber oxidation, enter the damp due to water vapor, the inferior fiber optical fiber with the anointed few, seriously affect the life of the optical fiber.
Aramid: Also called Mingkaifula, is a high-strength chemical fiber, currently in use by the military-industrial complex up, military helmets, bulletproof vests is the material production. Currently only DuPont and the Netherlands, Akzo production, the price is about more than thirty tons in case. Indoor cable and overhead power cables (ADSS) with aramid yarn strength member, due to the high cost of Kevlar, the poor quality indoor cable outer diameter do generally very small, so several strands of aramid cost savings by reducing so wear tube fiber optic cable can easily be pulled off. ADSS cable span, according to the site per second wind speed to determine the number of shares of use Kevlar cable, be sure to double-check before construction, confirm.
Reference:http://ingellenfiber.blogspot.com/2013/03/how-to-choose-fiber-optic-cable.html