OM is the abbreviation of optical multi-mode, which is translated into optical mode. It represents the grade standard of carrier-grade multi-mode fiber optic patch cords. Due to differences in core diameter, transmission speed and distance, it is divided into OM1, OM2, OM3, and OM4. The following ZR Fiber will introduce the difference between them and the method used.
om3 10 Gigabit fiber patch cord
First, the difference between OM1, OM2, OM3, OM4 fiber jumpers
1. Different parameters
(1) OM1 refers to 50um or 62.5um core diameter multimode fiber with 850/1300nm full injection bandwidth over 200/500MHz.km;
(2) OM2 refers to 50um or 62.5um core diameter multimode fiber with 850/1300nm full injection bandwidth above 500/500MHz.km;
(3) OM3 is a 50um core diameter multimode fiber optimized by 850nm laser. In 10Gb/s Ethernet using 850nm VCSEL, the fiber transmission distance can reach 300m;
(4) OM4 is an upgraded version of multimode optical OM3 fiber, and the optical fiber transmission distance can reach 550m.
2. Different uses
OM1 and OM2 have been widely deployed in building applications for many years, supporting Ethernet transmission up to 1GB;
OM3 and OM4 fiber optic cables are usually used in the wiring environment in the data center to support the transmission of 10G and even 40/100G high-speed Ethernet networks.
3. Different designs of carrier-grade multimode fiber jumpers
OM1 and OM2 use LED (Light Emitting Diode) as the basic light source for transmission, while OM3 and OM4 are suitable for both LED and LD (Laser Diode) light source transmission.
4. The difference in transmission speed and bandwidth
The transmission speed and bandwidth of the OM fiber jumper increases step by step, OM1<OM2<OM3<OM4
5. Different functions and features
(1) OM1: The core diameter and numerical aperture are large, and it has strong light-gathering ability and bending resistance;
(2) OM2: The core diameter and numerical aperture are relatively small, which effectively reduces the modal dispersion of the multimode fiber, significantly increases the bandwidth, and reduces the production cost by 1/3;
(3) OM3: The use of flame-retardant outer skin can prevent the spread of flame, prevent the emission of smoke, acid gas and poisonous gas, etc., and meet the needs of 10 Gb/s transmission rate;
(4) OM4: Developed for VSCEL laser transmission, its effective bandwidth is more than double that of OM3.
om3 10 Gigabit Fiber Patch Cord Application Scenario
Through the introduction of ZR Fiber, I believe that everyone has some understanding of the types and selection methods of carrier-grade multimode fiber jumpers. If you want to know more about ZR optical fiber series products, welcome customers to come to consult.
