optical transmitter receiver

См. также в других словарях:

• Optical hybrid — A 90° optical hybrid is a six port device that is used for coherent signal demodulation for either homodyne or heterodyne detection. It would mix the incoming signal with the four quadratural states associated with the reference signal in the… …   Wikipedia

• Optical heterodyne detection — is an important special case of heterodyne detection. In heterodyne detection, a signal of interest at some frequency is non linearly mixed with a reference local oscillator (LO) that is set at a close by frequency. The desired outcome is the… …   Wikipedia

• Optical communication — is any form of telecommunication that uses light as the transmission medium. An optical communication system consists of a transmitter, which encodes a message into an optical signal, a channel, which carries the signal to its destination, and a… …   Wikipedia

• Transmitter — For biologic transmitters, see transmitter substance. Commercial FM broadcasting transmitter at radio station WDET FM, Wayne State University, Detroit, USA. It broadcasts at 101.9 MHz with a radiated power of 48 kW. In electronics and… …   Wikipedia

• Optical power margin — In an optical communications link, the optical power margin is the difference between the optical power that is launched by a given transmitter into the fiber, less transmission losses from all causes, and the minimum optical power that is… …   Wikipedia

• Optical fiber cable — A TOSLINK optical fiber cable with a clear jacket. These plastic fiber cables are used mainly for digital audio connections between devices. An optical fiber cable is a cable containing one or more optical fibers. The optical fiber elements are… …   Wikipedia

• Optical attenuator — Variable Optical Attenuator An optical attenuator is a device used to reduce the power level of an optical signal, either in free space or in an optical fiber. The basic types of optical attenuators are fixed, step wise variable, and continuously …   Wikipedia

• Optical power budget — The optical power budget in a fiber optic communication link is the allocation of available optical power (launched into a given fiber by a given source) among various loss producing mechanisms such as launch coupling loss, fiber attenuation,… …   Wikipedia

• Parallel optical interface — A parallel optical interface is a form of fiber optic technology aimed primarily at communications and networking over relatively short distances (less than 300 meters), and at high bandwidths. Parallel optic interfaces differ from traditional… …   Wikipedia

• Superheterodyne receiver — A 5 tube superheterodyne receiver made in Japan around 1955 In electronics, a superheterodyne receiver (sometimes shortened to superhet) uses frequency mixing or heterodyning to convert a received signal to a fixed intermediate frequency, which… …   Wikipedia

• Universal asynchronous receiver/transmitter — A universal asynchronous receiver/transmitter (usually abbreviated UART and pronEng|ˈjuːɑrt) is a type of asynchronous receiver/transmitter , a piece of computer hardware that translates data between parallel and serial forms. UARTs are commonly… …   Wikipedia