Therefore as the input amplitude increases, the magnitude of the phase lead also goes on increasing from instant to instant. When the input amplitude decreases (-ve slope) the carrier undergoes phase lag. When the input amplitude increases (+ve slope) the carrier undergoes phase lead. The carrier phase deviation will be more if the input signal amplitude increases and vice versa. The phase modulation diagram is shown above. Once the signal strengthening process is done then the signal can transmit to a long distance. If we want to transmit a signal from one place to another, then we need to make the signal stronger. The channel is the medium that transmits the signal from one place to another. A receiver is used to change the signal reverse to the original data. A transmitter converts the data into a signal to transmit over a communication medium. The designing of a transmitter and a receiver in a communication system can be built with a set of electronic circuits. For example, if we take a basic communication system it comprises of three components namely transmitter (Tx), receiver (Rx), and a communication channel in between them. Communication can be defined as it is the procedure of two ways or one-way communication of information from one place to another or one person to another person. Nonlinear optics - (NLO) is the branch of optics that describes the behaviour of light in nonlinear media, that is, media in which the dielectric polarization P responds nonlinearly to the electric field E of the light.In our day by day life, we can see many entertainment media sources for communication such as radio, TV, newspaper, mobile phone, internet, and with a lot of people. The basis of the technique is to induce a fixed phase… … Wikipedia Mode-locking - is a technique in optics by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds (10−12 s) or femtoseconds (10−15 s). Modelocking - Mode locking is a technique in optics by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds (10 12s) or femtoseconds (10 15s).The basis of the technique is to induce a fixed phase… … Wikipedia Mamyshev of Bell Labs proposed and patented the use of the self phase modulation (SPM) for single channel optical pulse reshaping and re… … Wikipedia Mamyshev 2R regenerator - The Mamyshev 2R regenerator is an all optical regenerator used in optical communications. There are two main kinds of solitons: spatial solitons:… … Wikipedia Soliton (optics) - In optics, the term soliton is used to refer to any optical field that does not change during propagation because of a delicate balance between nonlinear and linear effects in the medium. PrinciplePulse width modulation uses a square wave whose pulse… … Wikipedia Pulse-width modulation - (PWM) of a signal or power source involves the modulation of its duty cycle, to either convey information over a communications channel or control the amount of power sent to a load. Une impulsion ultra courte, lorsqu elle voyage dans un milieu matériel, induit une variation de l indice de… … Wikipédia en Français Une impulsion ultra courte, lorsqu elle voyage dans un milieu matériel, induit une… … Wikipédia en FrançaisĪutomodulation De Phase - L automodulation de phase (self phase modulation, souvent abrégé en SPM) est un effet optique non linéaire d interaction lumière matière. Une impulsion ultra courte, lorsqu elle voyage dans un milieu matériel, induit une variation de l indice de… … Wikipédia en FrançaisĪuto-modulation de phase - Automodulation de phase L automodulation de phase (self phase modulation, souvent abrégé en SPM) est un effet optique non linéaire d interaction lumière matière. Contents 1 Applications of XPM 2 XPM in DWDM applications 3 See also … WikipediaĪutomodulation de phase - L automodulation de phase (self phase modulation, souvent abrégé en SPM) est un effet optique non linéaire d interaction lumière matière. This variation in refractive index… … WikipediaĬross-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. 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.
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