Fiber Optic Wiki

Optical fibre are used at specific wavelength

November 12, 2011

Optical fibre are used at specific wavelength. Multimodes fibre are mainly used at 850 nm and 1,300 nm and Singlemode are used at 1,310 nm and 1,550 nm. The attenuation performances are better at the higher bandwidth with consequentl improved transmission performances.

Nexans are able to preassemble optical fibre with plugs

November 12, 2011

Nexans are able to preassemble optical fibre with plugs, we can provide this service in our factory or on site. A fiber optic connector is a non permanent join between two fibre.

The installation and termination of optical fibers

November 12, 2011

The installation and termination of optical fibers used to be regarded as somewhat of a 'Black Art' but with standardization and easier terminating techniques this is no longer true. A basic knowledge of the subject, together with a quick lesson and some practice can get you started in fibre optics, but to really understand the subject and gain full in-depth knowledge will require some formal training.

First a bit history

November 12, 2011

In 1870, John Tyndall demonstrated that light follows the curve of a stream of water pouring from a container, it was this simple principle that led to the study and development of applications for this phenomenon. John Logie Baird patented a method of transmitting light in a glass rod for use in an early colour TV, but the http://www.fiberise.comoptical losses inherent in the materials at the time made it impractical to use.

Total internal refection confines light within optical fibers

November 11, 2011

Total internal refection confines light within optical fibers (similar to looking down a mirror made in the shape of a long paper towel tube). Because the cladding has a lower refractive index, light rays reflect back into the core if they encounter the cladding at a shallow angle (red lines). A ray that exceeds a certain "critical" angle escapes from the fiber (yellow line).

SINGLE-MODE FIBER has a narrow core

November 11, 2011

SINGLE-MODE FIBER has a narrow core (eight microns or less), and the index of refraction between the core and the cladding changes less than it does for multimode fibers. Light thus travels parallel to the axis, creating little pulse dispersion. Telephone and cable television networks install millions of kilometers of this fiber every year.

|< < .... 62 63 64 65 66 67 68 69 70 71 72 .... > >|

Showing 397 to 402 of 1106 (185 Pages)