Intensity modulation (IM)


Intensity modulation (IM)
A&V
Used in fiber optics as a method of transmission in which the analog signal directly modulates the light source.

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  • Intensity modulation — In optical communications, intensity modulation (IM) is a form of modulation in which the optical power output of a source is varied in accordance with some characteristic of the modulating signal. In intensity modulation, there are no discrete… …   Wikipedia

  • intensity modulation — noun : modulation in which the brightness of the light displayed on a cathode ray tube varies with the intensity of the signal …   Useful english dictionary

  • cathode-ray beam intensity modulation — elektronų pluošto intensyvumo moduliavimas statusas T sritis radioelektronika atitikmenys: angl. cathode ray beam intensity modulation vok. Intesitätsmodulation eines Katodenstrahls, f rus. модуляция интенсивности электронного пучка, f pranc.… …   Radioelektronikos terminų žodynas

  • Laser Intensity Modulation Direct Overwrite — Laser Intensity Modulation Direct Overwrite,   LIMDOW …   Universal-Lexikon

  • modulation de l'intensité du faisceau cathodique — elektronų pluošto intensyvumo moduliavimas statusas T sritis radioelektronika atitikmenys: angl. cathode ray beam intensity modulation vok. Intesitätsmodulation eines Katodenstrahls, f rus. модуляция интенсивности электронного пучка, f pranc.… …   Radioelektronikos terminų žodynas

  • Modulation — Mod u*la tion, n. [L. modulatio: cf. F. modulation.] 1. The act of modulating, or the state of being modulated; as, the modulation of the voice. [1913 Webster] 2. Sound modulated; melody. [R.] Thomson. [1913 Webster] 3. (Mus.) A change of key,… …   The Collaborative International Dictionary of English

  • Modulation transfer function (infrared imaging) — The Modulation Transfer Function (MTF) is used to approximate the position of best focus of an infrared imaging system. In an imaging system, best focus is typically achieved when the MTF is between 0.4 and 0.6; most often at 0.5 (50% cutoff… …   Wikipedia

  • High-intensity focused ultrasound — Contents 1 Theory 2 Aiming 3 How HIFU works 4 Method of use …   Wikipedia

  • Cross-phase modulation — (XPM) is a nonlinear optical effect where one wavelength of light can affect the phase of another wavelength of light through the optical Kerr effect. Contents 1 Applications of XPM 2 XPM in DWDM applications 3 See also …   Wikipedia

  • Self-phase modulation — (SPM) is a nonlinear optical effect of light matter interaction.An ultrashort pulse of light, when travelling in a medium, will induce a varying refractive index of the medium due to the optical Kerr effect. This variation in refractive index… …   Wikipedia