Offering state-of-the-art fiber optic Internet connections to businesses.

The Speed of Fiber

Lit San Leandro is an economic development project centered around high-speed fiber optic cable. What do we mean by high-speed?

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Fiber Optics: Communications at the Speed of Light

fiber optic cableThe San Leandro dark fiber loop uses a 288 strand fiber cable. Our main switch lights up the fiber with Internet connectivity for local service providers. As an Internet Access Provider, we are currently offering 100 Gigabits per second (Gbps, equal to 100,000 Megabits per second – Mbps) through 10 channels, each of 10 Gbps service. That means the total available speed today is equal to 100,000 Mbps. Contrast this with the average U.S. broadband speed at 10 Mbps. That is fast.

Optical fibers are widely used in high-capacity communications, which permits transmission over longer distances and at higher data rates than other forms of communication. Fibers are used instead of metal wires because signals travel along them with less loss, and they are immune to electromagnetic interference—the laser equipment is much faster than that which is used for copper.

Approximate time to transfer one DVD (about 4.7 Gb)

Transfer Speed Transfer Time
Modem (14.4 kbps) 32 days, 10 hrs, 48 mins
Typical Broadband (1.5 Mbps, T1 speed) 7 hrs, 15 mins
10 Mbps 68 minutes
25 Mbps 27 minutes
50 Mbps 14 minutes
100 Mbps 7 minutes
500 Mbps 1 minute
1 Gbps 41 seconds
10 Gbps 4 seconds

Note: Times are estimated using optimal conditions. Actual speed also depends on the ability of your computer and the capacity at the receiving end.

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