Patent ID: 7557987
Filing Date: 2009-07-07
Classification: H04B

Abstract:
1. A device for receiving optical signals, comprising: a stationary light-guiding object provided substantially in the form of a ring, said stationary light-guiding object having a lateral irradiation surface extending along a length of the stationary light-guiding object for receiving optical signals transmitted by a moveable stimulation unit and having a given wavelength, the irradiation surface extending along a propagation path along which light propagates within said light-guiding object, said light-guiding object including a material having an electron arrangement in which a population inversion is caused by an energetic excitation and in which a stimulation by the light of said optical signals causes an induced emission of light at the same wavelength and in the same direction as that of the optical signals, the light of the optical signals being thereby amplified; a stationary excitation unit for emitting light to cause the population inversion in the material included in said light-guiding object; a detector optically coupled to said stationary light-guiding object for detecting light having the wavelength of the optical signals; a wavelength-selective element for filtering out light emitted by said stationary excitation unit from the light of the amplified optical signals to be detected by said detector;