| 摘要 |
<p>A plug (3) fixed with a plastic optical fiber (POF) having a spherical tip end is connected to a receptacle (4). A transmitter/receiver (30) is fixed to the receptacle and mounted to substrates (13, 14, 13a) in a back-to-back manner so that the optical axes of a light emitting element (9) and a light receiving element (8) almost agree with the axis of the POF. A reception light (7) from the POF is condensed and is received by the light receiving element (8) mounted on the POF side. A transmission light (5) from the light emitting element (9) on the side opposite to the POF is reflected off the reflection surface (11a) of a lower prism (10) and shone into the POF via a light transmission unit provided on the substrates. A light shielding plate (16a) is provided around the light receiving element (8) to prevent a transmission/reflection light (6) at a POF end face from entering the element (8), thus preventing a cross talk.</p> |
