2006-08-20 00:42:55 · 4 answers · asked by ycaruss y 3 in Science & Mathematics ➔ Engineering
A single fiber strand can be created that is very long. Over 100 km is easily done for single-mode fiber used in telecommunications. The limitation is not on the manufacturing process creating the fiber, but actually comes from the need to boost the signal periodically. Thus a typical spacing in long haul (long distance) telecom networks might be 80km or 100 km.
2006-08-20 04:46:21 · answer #1 · answered by NordicGuru 3 · 0⤊ 0⤋
I think it's about 1/2 a mile to a mile before it needs to hit a repeater if you mean usable signal length. Otherwise, it would depend on the manufacturing process. When I was working with fiber optics, the maximum length for my purposes was 600 feet.
2006-08-20 10:26:00 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Multi-mode and single-mode fibers are used in communications, with multi-mode fiber used mostly for short distances (up to 500 m), and single-mode fiber used for longer distance links.
A common multimode fiber with bandwidth-distance product of 500 MHzÃkm could carry a 500 MHz signal for 1 km or a 1000 MHz signal for 0.5 km.
In single-mode fiber systems, both the fiber characteristics and the spectral width of the transmitter contribute to determining the bandwidth-distance product of the system. Typical single-mode systems can sustain transmission distances of 80 to 140 km (50 to 87 miles) between regenerations of the signal. By using an extremely narrow-spectrum laser source, data rates of up to 40 gigabits per second are achieved in real-world applications.
2006-08-20 11:47:32 · answer #3 · answered by Anonymous · 0⤊ 0⤋
From memory the longest pulled fibre in a single piece is about 40km but I might be wrong.
2006-08-20 08:44:19 · answer #4 · answered by andyoptic 4 · 0⤊ 0⤋