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Calculating Optical Fiber Latency

Posted by Kevin Miller on Mon, Jan 9, 2012 @ 15:01 PM

Latency is a term that is used to describe a time delay in a transmission medium such as a vacuum, air, or a fiber optic waveguide.  In free space, light travels at 299,792,458 meters per second.  This equates to 299.792 meters per microsecond (µs) or 3.34µs per kilometer.  In fiber optics, the latency of the fiber is the time it takes for light to travel a specified distance through the glass core of the fiber.  Light moving through the fiber optic core will travel slower than light through a vacuum because of the differences of the refractive index of light in free space and in the glass.

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Topics: optical fiber, time delay, fiber latency, fiber optic latency, refractive index, calculate latency, fiber optic delay

Latency in Fiber Optic Networks

Posted by Kevin Miller on Mon, Aug 1, 2011 @ 11:08 AM

The term latency refers to the time delay in a particular system. For communications systems, latency is an important factor, because transmission delays can affect the quality and reliability of the system. In the case of fiber optic networks, latency is the time delay that affects light as it travels through the fiber optic network.

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Topics: latency, time delay, fiber optic, reducing latency, minimizing latency, fiber optic networks