Abstract:
The invention relates to a fibre optical measuring device with a transducer section (1-5) comprising an optically supplied electronic circuit (1) and/or transducer elements which require excitation energy, the supply power and the excitation energy being transmitted on the same light guide fibre as the signal information (measuring signal). The invention is characterized in that the signal information is arranged to be transmitted to a receiver location in the form of light which is emitted from the transducer section (1-5) when optically excited charge carriers recombine within a semiconductor material in the transducer section, and that this recombination is arranged to be controlled by electric signals (2-4).
Abstract:
A wavelength sensing lighting system (10) may include a light source (40), a sensor and a controller (61). One or more light sources (40) and sensors may be included in an array (39). The light source (40) may emit an illuminating light (44) and the sensor may sense an environmental light (48). The illuminating light (44) may include data light (45). The lighting system (10) may include a plurality of nodes connected in a network (69). The nodes may communicate by emitting and receiving the data light (45), which may be analyzed by the controller (61). The light source (40) and the sensor may be provided by a light emitting semiconductor device (40) that is capable of emitting illuminating light (44) and receiving environmental light (48). A conversion material (30) may convert the wavelength of a source light (42) into a converted light (46). The conversion material (30) may increase the wavelength range of light emittable and detectable by the lighting system (10).
Abstract:
A single-core optical transceiver 1 is an optical transceiver for transmitting or receiving an optical signal through a single optical fiber 2. The single-core optical transceiver 1 has a light emitting device 13 for transmitting the optical signal and a light receiving device 12 for receiving the optical signal. The light emitting device 13 is an LED configured including a sapphire substrate 13b arranged on a light receiving surface 12a of the light receiving device 12 so as to be coaxial with the light receiving surface 12a, and a nitride semiconductor layer 13a laid on the sapphire substrate 13b. Even with the light emitting device 13 being arranged on the light receiving surface 12a of the light receiving device 12, the optical signal from the optical fiber 2 can be received on the entire area of the light receiving surface 12a, so as to adequately improve the light sensitivity.
Abstract:
Die vorliegende Erfindung betrifft einen optischen Signalempfänger (E) mit einem elektrischen Empfängerbaustein (14) zur Verarbeitung der von einem elektrooptischen Empfangselement (8) erzeugten elektrischen Signale. Um einen kostengünstigen optischen Signalempfänger bereitzustellen, der leicht verfügbar ist und einen einfacheren Aufbau optischer Übertragungssysteme, insbesondere auch bidirektionaler Übertragungssysteme zu schaffen, wird erfindungsgemäß vorgeschlagen, dass der optische Signalempfänger (E) als elektrooptisches Empfangselement (8) für die in elektrische Signale umzuwandelnden optischen Signale eine Leuchtdiode (8) aufweist.
Abstract:
Signal reflection mitigation in fiber-optic networks. Signal reflections are mitigated using near-end echo cancellation, threshold adjustment and/or error correction code. Signal reflections in a receive signal that are caused by near-end connectors may be mitigated using an echo cancellation signal. Signal reflections caused by other discontinuities on a fiber-optic network may be mitigated by using error correction code. Also, an average value of a reflected signal maybe detected and used to set an adjusted threshold value to interpret logical values of an electronic or optical signal.
Abstract:
A two-way communication system includes two identical assemblies (A, B). Each assembly comprises a laser structure which can operate both as a transmitter and as a receiver. The system operates in half duplex mode, and may be used in optical communications.