There are many types of optical fiber cables, but for those who do not use optical fibers often, the numerous specifications are quite troublesome. Accidentally choose an unsuitable wire. Today, let's talk about how to choose the right fiber optic cable?
Do you need multi-mode or single-mode fiber optic cables?
If you already have a fiber optic cable and want to buy another one, you can usually identify the type of fiber optic cable from the color of the fiber optic cable. Single mode fiber is yellow, and multimode fiber 50μm or 62.5μm is usually orange. 10GB multimode fiber is usually aqua blue (Aqua). If you do not know the color of the optical fiber, you must confirm the specification of the optical fiber. Here are some common ways to differentiate specifications.
• OS1, OS2, 9µm, 9/125 = single mode fiber
• OM1, 62.5µm, 62.5/125 = multimode fiber 62.5
• OM2, 50µ, 50/125 = multimode fiber 50
• OM3, 10GB, 50µm, 50/125 = 10GB over multimode fiber
• OM4, 100GB, 50µm, 50/125 = 100GB over multimode fiber
It can be known from the above information that both 50µm and 62.5µm are multimode fibers and the fiber color is orange. But 50µm multimode fiber cables may also be aqual. Where the distinction cannot be made, it is necessary to check the hardware specification file to confirm the correct fiber specification required.
Different fiber optic lines have advantages and disadvantages. Single-mode fiber usually uses long-distance transmission, 20KM is quite common. However, hardware equipment that supports single-mode fiber is usually more expensive. Although multi-mode fiber cannot carry out long-distance transmission, the hardware equipment is more economical.
What kind of fiber optic cable do you need?
There are many types of fiber optic connectors. The following are the most commonly used fiber optic connectors:
FC: single core FC connector
LC: Two-core LC connector, which uses a clamp to combine two wires together
SC: Dual-core SC connector, which uses a clamp to combine two wires together
ST: single core ST connector
What is Optical Return Loss Optical Return Loss (ORL)?
Return loss can be calculated by sending a light pulse to the end of the fiber and measuring the amount of returned light. Losses can occur at connections or welds. If the connection is dirty, scratched, etc., the returned measured signal will be weak, causing several different problems. The higher the return loss ORL, the better.
