초록 ▼

In an optical microphone including a light source, a fiber optic cable and a Fabry-Perot interferometer with two reflectors, wherein one end face of the fiber optic cable forms a first reflector and the second reflector is arranged at a distance therefrom and is displaceable by fluctuations in the s

In an optical microphone including a light source, a fiber optic cable and a Fabry-Perot interferometer with two reflectors, wherein one end face of the fiber optic cable forms a first reflector and the second reflector is arranged at a distance therefrom and is displaceable by fluctuations in the sound air pressure, the second reflector is the end face of a glass fiber section which is displaceable by induced air pressure by means of a separate diaphragm that is coupled thereto. The light source may be a super luminescent diode (SLD).

대표청구항 ▼

[ What is claimed is:] [1.] An optical microphone including a light source, a fibre optic cable having end faces, and a Fabry-Perot interferometer, said interferometer having a first and second reflectors wherein one end face of said fibre optic cable forms said first reflector and said second refle

[ What is claimed is:] [1.] An optical microphone including a light source, a fibre optic cable having end faces, and a Fabry-Perot interferometer, said interferometer having a first and second reflectors wherein one end face of said fibre optic cable forms said first reflector and said second reflector is arranged at a distance therefrom and is displaceable by fluctuations in the sound air pressure, wherein said second reflector is the end face of a glass fibre section, and wherein said glass fibre section is displaceable by induced air pressure by means of a separate diaphragm coupled thereto.