Arrangement for detecting a branched off signal
First Claim
1. In an arrangement for branching off a signal from a fiber optical waveguide and detecting a signal with a detector having a detector window disposed adjacent one side of the waveguide, a portion of said waveguide having a portion in the area of said detector being free of bends and having means for forming a signal dispersing point located in the area of the detector window to scatter a part of the signal guided in the waveguide out of the waveguide and into the detector window, the improvements comprising said detector consisting of a semiconductor photo diode having a planar construction with a detector window lying in a two dimensional plane;
- a photo sensitive layer contacting said window; and
a substrate for supporting said layer and diode, said photo sensitive layer in the vicinity of the detector window having a groove shaped aperture for receiving and engaging said portion of the waveguide having said means for forming the signal dispersing point, said means for forming the signal dispersing point comprising a separation extending through the waveguide to divide the waveguide into two sections with their ends aligned in abutting relationship with a gap between the ends and extending substantially cross-wise to the longitudinal axis of the waveguide, said photo sensitive layer having a bridge extending across said groove-shaped aperture and being received in the gap between the ends of the waveguide so that light scattered from the waveguide is received by said window.
0 Assignments
0 Petitions
Accused Products
Abstract
An arrangement for branching off a signal from an optical waveguide and detecting the signal with a detector characterized by the waveguide in the area of the detector being free of bends and having means, such as a notch or an entire separation, for forming a signal dispersing point located in the area of a window of the detector.
24 Citations
15 Claims
-
1. In an arrangement for branching off a signal from a fiber optical waveguide and detecting a signal with a detector having a detector window disposed adjacent one side of the waveguide, a portion of said waveguide having a portion in the area of said detector being free of bends and having means for forming a signal dispersing point located in the area of the detector window to scatter a part of the signal guided in the waveguide out of the waveguide and into the detector window, the improvements comprising said detector consisting of a semiconductor photo diode having a planar construction with a detector window lying in a two dimensional plane;
- a photo sensitive layer contacting said window; and
a substrate for supporting said layer and diode, said photo sensitive layer in the vicinity of the detector window having a groove shaped aperture for receiving and engaging said portion of the waveguide having said means for forming the signal dispersing point, said means for forming the signal dispersing point comprising a separation extending through the waveguide to divide the waveguide into two sections with their ends aligned in abutting relationship with a gap between the ends and extending substantially cross-wise to the longitudinal axis of the waveguide, said photo sensitive layer having a bridge extending across said groove-shaped aperture and being received in the gap between the ends of the waveguide so that light scattered from the waveguide is received by said window. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- a photo sensitive layer contacting said window; and
- 8. In an arrangement for branching off a signal from a fiber optical waveguide and detecting a signal with a detector having a detector window disposed adjacent one side of the waveguide, a portion of said waveguide having a portion in the area of said detector being free of bends and having means for forming a signal dispersing point located in the area of the detector window to scatter a part of the signal guided in the waveguide out of the waveguide and into the detector window, the improvements comprising said detector consisting of a semiconductor photo diode having a planar construction with a detector window lying in a two dimensional plane, a photo sensitive layer contacting said window and being directly supported on a substrate, and a spacing layer having an aperture being interposed between the photo sensitive layer and the photo diode with said aperture of the spacing layer being in the area of the detector window, said photo diode being supported by the spacing layer on a side of the photo sensitive layer opposite said substrate, said photo sensitive layer in the vicinity of the detector window having a groove-shaped aperture for receiving and engaging said portion of the waveguide having the means for forming the signal dispersing point so that light scattered from the waveguide is received by said window.
Specification