Encyclopedia > Radiation angle

Article Content

Radiation angle

Radiation angle: In fiber optics, half the vertex angle[?] of the cone of light emitted at the exit face of an optical fiber.

Note: The cone boundary is usually defined (a) by the angle at which the far-field[?] irradiance[?] has decreased to a specified fraction of its maximum value or (b) as the cone within which there is a specified fraction of the total radiated power at any point in the far field[?].

Synonym output angle.

Source: from Federal Standard 1037C and from MIL-STD-188

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Holtsville, New York

... families residing in the town. The population density is 943.4/km² (2,444.3/mi²). There are 5,418 housing units at an average density of 300.6/km² ...