Structure for connecting a plastic optical fiber to a photodetector

A plastic optical fiber (A) having a core and a cladding portion is connected to a light-receiving element such as a photo-diode (PD) through a connecting structure. The connecting structure such as a light-relay element (52) is interposed between an end face of the plastic optical fiber and a light...

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Bibliographic Details
Main Author YUUKI, HAYATO
Format Patent
LanguageEnglish
French
German
Published 24.11.1999
Edition6
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
SEMICONDUCTOR DEVICES
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Summary:A plastic optical fiber (A) having a core and a cladding portion is connected to a light-receiving element such as a photo-diode (PD) through a connecting structure. The connecting structure such as a light-relay element (52) is interposed between an end face of the plastic optical fiber and a light-receiving face (Rf) of the photo-diode in the same axial direction. The connecting structure has a frusto-conical shape having a cylindrical surface and end faces. The diameter of the structure decreases gradually from the fiber side towards the photo-diode side, so that its fiber-side face has a size corresponding to that of the core portion of the fiber, whilst its photo-diode side face corresponding to that of the light-receiving face. By virtue of this configuration, the connection loss between the plastic optical fiber and the light-receiving element can be minimized.
Bibliography:Application Number: EP19980402208