And it works vice versa—a 200 MHz*km fiber can also be defined as moving 100 MHz of data up to two kilometers. Multimode Fiber (MMF) has a core diameter, typically 50–100 micrometers, has ability to transfer multiple modes of light through the fiber core, uses lower-cost electronics (LED, VCSEL) operates at. Definition: the maximum optical bandwidth (limited by intermodal dispersion) which can be used in a telecom fiber Alternative term: multimode fiber bandwidth Concept trees: Related: intermodal dispersion differential mode delay bandwidth telecom fibers Units: MHz km Formula symbol: B × L Page views. Three representative optical modes: (a) a low-order mode where light travels in a direct path close to the optic axis of the fiber core; (b) a meridian mode where the light travels along a sinusoidal path through the optic axis; and (c) a skew mode where the light travels in a corkscrew path in a. Effective Modal Bandwidth (EMB) is dependent on the differential mode delay of a fiber, or DMD, which is the primary bandwidth-limiting factor of multimode fiber.
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