SR (Short hul) is a multimode fiber while LR (Long hul) is a single mode fiber, the SR spans much shorter distance than the LR
1. Step index fiber is of two types viz; mono mode fiber and multi mode fiber. Graded index fiber is of only of one type that is multi mode fiber. 2. The refractive index of the core of the step index fiber is constant through out the core. The refractive index of the core of the graded index fiber is maximum at the center of the core and then it decreases towards core-cladding interface. 3. Number of modes for step index fiber N = V2/2, where V is cut off frequency or normalized frequency or V- number Number of modes for graded index fiber is N = V2/ 4. 4. V number can be less that 2.405 or more that 2.405 for step index fiber V number is always more than 2.405 for graded index fiber. 5. Step Index Fiber is a fiber in which the core is of a uniform refractive index and there is a sharp decrease in the index of refraction at the cladding. Graded Index Fiber is a type of fiber where the refractive index of the core is lower toward the outside of the fiber. It bends the rays inward and also allows them to travel faster in the lower index of refraction region. This type of fiber provides high bandwidth capabilities.
100 meters, or 328 feet.
Key Advantages as follows:1. immunity to electromagnetic interference. EMI2.. High data rates3. Long maximum distances4. Better security
The maximum transmission distance for a network using 10Base5 technology, also known as "thicknet," is 500 meters (1,640 feet) per segment. This coaxial cable-based Ethernet standard supports data rates of 10 Mbps and allows for multiple segments to be connected, with up to 2,500 meters total distance when using repeaters. However, the effective distance for practical networking may be less due to the need for network devices and connectors.
Multimode
multimode fiber network + Guide to networks pg 106-108
Singlemode fiber has a lower power loss characteristic than multimode fiber, which means light can travel longer distances through it than it can through multimode fiber. Not surprising, the optics required to drive singlemode fiber are more expensive. When to use each: Both singlemode and modern multimode fiber can handle 10G speeds. The most important thing to consider is the distance requirement. Within a data center, it's typical to use multimode which can get you 300-400 meters. If you have very long runs or are connecting over longer distance, single mode can get you 10km, 40km, 80km, and even farther - you just need to use the appropriate optic for the distance required, and again, the prices go up accordingly. Compatibility issues: They are not compatible. You cannot mix multimode and singlemode fiber between two endpoints. The optics are not compatible either.
Multimode fiber
Multimode; "Single-mode fiber gives you a higher transmission rate and up to 50 times more distance than multimode, but it also costs more."
Modal bandwidth
850 and 1300nm
850nm laser-optimized 50/125-micron multimode fiber
Multimode fiber optic cable at 850nm
MM fiber is multi mode fiber.strength 1.more (fiber area cross section) light carry componet core is 62.5 microns2. Same cable can be used for both single mode and multimode transmission.weakness is less transmission distance 2kms (half of the single mode fiber distance)
SR (Short hul) is a multimode fiber while LR (Long hul) is a single mode fiber, the SR spans much shorter distance than the LR
Multimode fiber (MMF.