Abstract: A nipple adapter is provided to secure a sensor to a fixture to be controlled by the sensor. The nipple adapter includes a collar bushing to be blind fitted to an opening in the fixture. A cooperating nipple is secured to the sensor and the nipple is press fit into the collar bushing and the sensor and nipple are rotated to engage locking structures in the collar bushing and secure the sensor and nipple adapter to the fixture.

Abstract: Embodiments provide single fiber bidirectional HDCP modules. A signal fiber module includes at least one laser and at least one detector and a waveguide combiner/splitter. An optical fiber is used as a cylindrical lens in order to partially collimate in the vertical axis the optical signals entering and leaving branches of a waveguide. The branches of the waveguide have lens-shape interfaces in order to at least partially collimate in the horizontal axis the beams entering and leaving the waveguide. Each branch of the waveguide tapers toward a join-section of the waveguide. At the join section, the cross-section of a laser branch is smaller than the cross-section of a detector branch. If more than one detector is present in a module, the cross-sections of the detector branches differ from each other. If more than one laser is present in a module, the cross-sections of the laser branches differ from each other.