By Jim Hayes

Here is an quintessential device for all technicians and electricians who have to find out about optimum fiber optic layout and install in addition to decide up the most recent troubleshooting information and strategies. the data offered in Fiber Optics Technician's guide has been sophisticated and up-to-date in keeping with suggestions and participation from fiber optics technicians such as you. you can now have this invaluable details at your fingertips, to be had to you while and the place you wish it. Following a concise review of the fundamentals and heritage of fiber optics, each the most important region is roofed in its sensible points together with networks, cables, cable requisites, connectors and splices, and fiber optic undefined. you'll know about confirmed guidance for higher fiber optic layout and set up, the main to successful contracts via extra actual estimating and bidding, methods of making sure safeguard at the activity, in addition to right documentation, recovery, and trying out approaches. A convenient word list clarifies even the main tricky technical phrases, whereas a criteria part issues out the laws governing the sphere.

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When plowing is used as an installation means, only loose-buffered cables are used, since they can withstand uneven pulling pressures better than tightbuffered cables. Where freezing water presents a problem, metal sheaths, double jackets, and gel fillings can be used as water barriers. Installation Rather than using expensive, heavy-duty cables, 1-inch polyethylene gas pipe is sometimes used to form a simple conduit. These tubes are also used as inner ducts, placed inside of larger (usually 4 inch) conduits.

All cables used indoors must carry identification and ratings per the NEC. Cables without markings should never be installed as they will not pass code! NEC ratings are: (OFN) Optical fiber nonconductive (OFC) Optical fiber conductive (OFNR) or (OFCR) Riser-rated cable for vertical runs (OFNP) or (OFCP) Plenum-rated cables for installation in air-handling plenums A legitimate question is whether an electrical inspector has any jurisdiction over installations that do not use conductive cables, the fact being that such cables do not carry any electricity.

Typical ranges of operation are given in Table 5-2 for various types of applications. In general, there are very few applications in which fiber optic transmission cannot be used solely for reasons of temperature range of operation. In fact, some fibers have coatings that will survive continuous operation at 400°C. For operation at such high temperatures, fibers are usually, but not always, incorporated into a cable structure consisting of a metal tube.

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