optical-signal conversion

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• 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 amplifier — An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from… …   Wikipedia

• Optical cross-connect — An optical cross connect (OXC) is a device used by telecommunications carriers to switch high speed optical signals in a fiber optic network, such as an optical mesh network. There are several ways to realize an OXC: Opaque OXCs (electronic… …   Wikipedia

• Optical communications repeater — An optical communications repeater is used in a fiber optic communications system to regenerate an optical signal by converting it to an electrical signal, processing that electrical signal and then retransmitting an optical signal. Such… …   Wikipedia

• Signal processing — is an area of systems engineering, electrical engineering and applied mathematics that deals with operations on or analysis of signals, in either discrete or continuous time. Signals of interest can include sound, images, time varying measurement …   Wikipedia

• Optical IP Switching — (OIS), is a novel method of creating transparent optical connections between network nodes using a flow based approach. An IP flow is a collection of IP packets going from the same source to the same destination: the exchange of IP packets is the …   Wikipedia

• Optical Burst Switching — (OBS) is an experimental switching paradigm representing an intermediate solution between circuit (wavelength) and packet switching in optical networks. PurposeIts purpose is to dynamically provision sub wavelength granularity by optimally… …   Wikipedia

• Optical parametric oscillator — Infrared optical parametric oscillator An optical parametric oscillator (OPO) is a parametric oscillator which oscillates at optical frequencies. It converts an input laser wave (called pump ) into two output waves of lower frequency (ωs,ωi) by… …   Wikipedia

• Optical mesh network — Transport network based on SONET/SDH ring architecture Optical mesh networks are a type of telecommunications network. Transport networks, the underlying optical fiber based layer of telecommunications networks, have evolved from DCS (Digital… …   Wikipedia

• Optical line termination — An optical line termination (OLT), also called an optical line terminal, is a device which serves as the service provider endpoint of a passive optical network. It provides two main functions: to perform conversion between the electrical signals… …   Wikipedia

• Optical modulators using semiconductor nano-structures — Contents 1 Optical modulators using semiconductor nano structures 1.1 Electro optic modulator of nano structures 1.2 Acousto optic modulator of nano structures …   Wikipedia