Optical attenuator providing controlled attenuation

Details Optical attenuator providing controlled attenuation Optical attenuator providing controlled attenuation

G - Physics

02

F

88/114, 345/55,

G02F 1/01 (2006.01)

Patent

CA 1155678

AN OPTICAL ATTENUATOR PROVIDING CONTROLLED ATTENUATION Abstract of the Disclosure The real attenuation produced by the optical attenuator is determined by means of photodetectors which carry out continuous measurements of the intensity of an auxiliary beam before and after it passes through the attenuator element. Signals which are emitted by the photodetectors and are proportional to the intensity received are transmitted to an electronic processing system which computes and displays the attenuation in decibels. -1-

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