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Nonlinear optical effect of light-matter interaction
Self-phase modulation (SPM) is a nonlinear optical effect of light–matter interaction. An ultrashort pulse of light, when travelling in a medium, will
Self-phase_modulation
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
Cross-phase_modulation
Concept in optics
from 400-700 nm and the authors explained their formation through self-phase modulation and four-wave mixing. The filaments themselves were of no real use
Supercontinuum
Branch of physics
dispersion and the Kerr effect (e.g. self-phase modulation for temporal and self-focusing for spatial solitons). Self-diffraction, splitting of beams in
Nonlinear_optics
All-optical regenerator used in optical communications
Pavel V. Mamyshev of Bell Labs proposed and patented the use of self-phase modulation (SPM) for single channel optical pulse reshaping and re-amplification
Mamyshev_2R_regenerator
Family of digital modulation methods
(modulating) the amplitudes of two differently phased versions of a single carrier wave using amplitude modulation. These paired analog signal channels may
Quadrature amplitude modulation
Quadrature_amplitude_modulation
Laser light source
white-light generation even one octave wide (for example using nonlinear self-phase modulation in neon gas). Therefore, a subband can be selected and fairly short
Optical_parametric_amplifier
Term in optics
solitons are based on the same principle: the Kerr effect introduces a self-phase modulation that changes the refractive index according to the intensity: φ
Soliton_(optics)
processes like self-phase modulation (SPM), modulational instability, soliton generation and soliton fission, cross phase modulation (XPM) and others
Zero-dispersion_wavelength
Change in refractive index of a material in response to an applied electric field
responsible for the nonlinear optical effects of self-focusing, self-phase modulation and modulational instability, and is the basis for Kerr-lens modelocking
Kerr_effect
Quantum optics in silicon
are also known in optical fiber) result from a balance between self phase modulation (which causes the leading edge of the pulse to be redshifted and
Silicon_photonics
Study of physics on quintillionth-second timescales
broadening of high-energy pulses (e.g. gas-filled hollow-core fiber via self-phase modulation) (1996), mirror-dispersion-controlled technology (chirped mirrors)
Attosecond_physics
Laser capable of delivering picosecond (10^-12 s) pulses of light
refraction, and can vary as a function of field intensity (i.e. self-phase modulation) and wavelength (chromatic dispersion). Common current ultrashort
Ultrashort_pulse_laser
Self-reinforcing single wave packet
relative phases. Alternatively, the bound state of solitons could be formed by dressing atoms with highly excited Rydberg levels. The resulting self-generated
Soliton
Representation of a signal as a rectangular wave with varying duty cycle
Pulse-width modulation (PWM), also known as pulse-duration modulation (PDM) or pulse-length modulation (PLM), is any method of representing a signal as
Pulse-width_modulation
Distortion of laser beams in media
Bingi, Jayachandra (December 23, 2023). "Demonstration of spatial self phase modulation based photonic diode functionality in MoS2/h-BN medium". Materials
Thermal_blooming
Way to produce very short laser bursts
created through the compression of longer (e.g. 30 fs) pulses by self-phase modulation in a hollow-core fibre or during filamentation. However, the minimum
Mode_locking
Signal able to be decoded without an outside source of synchronization
varying the phase, as in polar modulation, or adding another signal that is 90° out of phase (a sine wave), as in quadrature amplitude modulation. The result
Self-clocking_signal
Laser source with equal intervals of spectral lines
obtaining an optical frequency comb, including periodic modulation (in amplitude and/or phase) of a continuous-wave laser, four-wave mixing in nonlinear
Frequency_comb
Topics referred to by the same term
2019 Scanning probe microscopy Scratchpad memory, in computing Self-phase modulation, nonlinear light–matter interaction Specialized proresolving mediators
SPM
Property in optics
called the optical Kerr effect and causes phenomena such as self-focusing and self-phase modulation. If the index varies linearly with the field (a nontrivial
Refractive_index
Method in theoretical optics
216. ISBN 0-521-42424-0. Svelto, Orazio (1974). "Self-focussing, self-trapping, and self-phase modulation of laser beams". In Wolf, Emil (ed.). Progress
Slowly varying envelope approximation
Slowly_varying_envelope_approximation
Phenomenon in nonlinear optics
frequencies are typically attributed to self-phase modulation and cross-phase modulation, and are naturally phase-matched unlike FWM. Two common forms of
Four-wave_mixing
Pattern used within a communications system to represent digital data
TC-PAM Alternate-Phase Return-to-Zero (APRZ) Carrier-Suppressed Return-to-Zero (CSRZ) Three of Six, Fiber Optical (TS-FO) Physical layer Self-synchronizing
Line_code
Rate of modulation of a digital signal
In a digital modulation method provided by a modem, each symbol is typically a sine wave tone with a certain frequency, amplitude and phase. Symbol rate
Symbol_rate
Frequency mixing function in signal processing
In electronics, ring modulation is a signal processing function, an implementation of frequency mixing, in which two signals are combined to yield an output
Ring_modulation
Transoceanic communication line placed on the seabed
In single carrier configurations the dominating limitation is self phase modulation induced by the Kerr effect which limits the amplification to +18
Submarine communications cable
Submarine_communications_cable
Elementary particle or quantum of light
research area, with topics such as two-photon absorption, self-phase modulation, modulational instability and optical parametric oscillators. However,
Photon
Effect of a material on light
compensation is ultimately limited by nonlinear effects such as self-phase modulation, which interact with dispersion to make it very difficult to undo
Dispersion_(optics)
Interferometric technique
reflected by a vibrating target is reflected into the laser cavity, causing a modulation both in amplitude and in frequency of the emitted optical beam. In this
Self-mixing_interferometry
Self-information Self-interacting dark matter Self-mixing interferometry Self-organized criticality Self-phase modulation Self-propagating high-temperature synthesis
Index_of_physics_articles_(S)
Chemical compound
"Determination of nonlinear refractive index in a Ta2O5 rib waveguide using self-phase modulation". Optics Express. 12 (21): 5110–5116. Bibcode:2004OExpr..12.5110T
Tantalum_pentoxide
Chemical compound
all-optical switching and information converters based on the spatial self-phase modulation (SSPM) effect of TaSe2 nanosheets". Journal of Materials Chemistry
Tantalum_diselenide
Nonlinear form of the Schrödinger equation
many nonlinearity effects in a fiber, including but not limited to self-phase modulation, four-wave mixing, second-harmonic generation, stimulated Raman
Nonlinear Schrödinger equation
Nonlinear_Schrödinger_equation
Phenomenon whereby deviations from a periodic waveform are reinforced by nonlinearity
In the fields of nonlinear optics and fluid dynamics, modulational instability or sideband instability is a phenomenon whereby deviations from a periodic
Modulational_instability
Form of signal modulation using time shifts
Pulse-position modulation (PPM) is a form of signal modulation in which M message bits are encoded by transmitting a single pulse in one of 2 M {\displaystyle
Pulse-position_modulation
Interacting phenomenon between light and matter
index Self-focusing Kerr-lens modelocking (KLM) Self-phase modulation (SPM), a χ ( 3 ) {\displaystyle \chi ^{(3)}} effect Optical solitons Cross-phase modulation
Parametric_process_(optics)
Laser mode-locking method
and the losses low. The Kerr effect leads to the Kerr-lens and Self-phase modulation at the same time. To a first approximation it is possible to consider
Kerr-lens_modelocking
Selective laser sintering Self-amplified stimulated emission Self-focusing Self-mixing interferometry Self-phase modulation Self-pulsation Semiconductor
List_of_laser_articles
Dielectric mirror
components outside the gain range of the crystal generated indirectly by self-phase modulation are not lost through the end or folding mirrors but are transmitted
Chirped_mirror
Chinese Canadian physicist
vibration); and the use of nonlinear optical effects (self-phase modulation, cross-phase modulation, four-wave mixing, and stimulated scattering) in fibers
Xiaoyi_Bao
Audio amplifier based on switching
pulse-width modulation (PWM), pulse-density modulation (sometimes referred to as pulse frequency modulation), sliding mode control (more commonly called self-oscillating
Class-D_amplifier
Pleasurable phenomenon elicited via direct stimulation of specific brain regions
multi-synaptic and not exclusively dopaminergic. This introduces potential for modulation by other neurotransmitter systems at different stages in the transmission
Brain_stimulation_reward
(help) Alfano, R. R.; Shapiro, S. L. (1970-03-16). "Observation of Self-Phase Modulation and Small-Scale Filaments in Crystals and Glasses". Physical Review
Photoionization_mode
Villeneuve, A.; Wigley, P. G. J.; Stegeman, G. I. (1993). "Enhanced self-phase modulation in tapered fibers". Optics Letters. 18 (23): 1996. Bibcode:1993OptL
Subwavelength-diameter optical fibre
Subwavelength-diameter_optical_fibre
nonlinear media with cubic nonlinearity. The equations describing the self phase modulation of the fundamental wave A and the generation of new wave perpendicularly
Cross-polarized wave generation
Cross-polarized_wave_generation
Ray tracing technique
propagation in nonlinear Kerr media and its application to spatial self-phase modulations". Journal of Optics. 15 (3) 035202. Bibcode:2013JOpt...15c5202R
Ray_transfer_matrix_analysis
longitudinal mode SPIDER – spectral phase interferometry for direct electric-field reconstruction SPM – self-phase modulation TE – transverse electric mode
Laser_acronyms
Radio transmission of audio by frequency modulation
FM broadcasting is a radio broadcasting method that uses frequency modulation (FM) transmissions. In November 1919, Hans Idzerda began broadcasts, using
FM_broadcasting
Physical phenomenon
between the oscillation and the modulation of the external source of power. The amplitude and waveform of steady self-oscillations are determined by the
Self-oscillation
Line code used in early magnetic data storage and Ethernet
telecommunications and data storage, Manchester code (also known as phase encoding, or bi-phase code) is a line code in which the encoding of each data bit is
Manchester_code
Toy model for electronic localization
{\displaystyle \varphi } is a relative phase, and β {\displaystyle \beta } is the modulation of the onsite potential modulation in units of the lattice constant
Aubry–André_model
Integral transform and linear operator
\cos(\omega t+\varphi _{m}(t))} is called angle modulation, which includes both phase modulation and frequency modulation. The instantaneous frequency is ω +
Hilbert_transform
Non-linear optical process
filamentation, or modulation instability, spontaneous dividing into a multitude of microscale self-focused beams, or filaments. The balance of self-focusing and
Self-focusing
Line code in which the signal value returns to zero between each pulse
condition, such as a zero amplitude in pulse-amplitude modulation (PAM), zero phase shift in phase-shift keying (PSK), or mid-frequency in frequency-shift
Return-to-zero
Angle modulation is the proper term for modulation by changing the instantaneous frequency or phase of the carrier signal. True FM and phase modulation are
Radio_transmitter_design
Torque regulation method for three-phase AC motors
variable-frequency drives to control the torque (and thus finally the speed) of three-phase AC electric motors. This involves calculating an estimate of the motor's
Direct_torque_control
the produced linear temporal phase modulation and the spectrum of the combined pulses then has a modulation phase of: ϕ ( ω ) = ϕ r e f ( ω + δ ω ) +
Spectral_interferometry
which supported an explanation based on pump noise transfer by self-phase modulation. In the latter experimental study, filaments of extreme intensity
Optical_rogue_waves
Broadcast network
Alternatives to using OFDM modulation in SFN self-interference cancellation would be: CDMA rake receivers. MIMO channels (i.e. phased array antenna) Single-carrier
Single-frequency_network
American electrical engineer (born 1951)
Converters and Constant-Envelope Phasors" (First to achieve 1024QAM modulation at mm-Wave frequencies with direct carrier modulation and constant-envelope power
M._C._Frank_Chang
Mechanism of spontaneous phase separation
thermodynamic phase spontaneously separates into two phases (without nucleation). Decomposition occurs when there is no thermodynamic barrier to phase separation
Spinodal_decomposition
Self-synchronizing line code
line code in digital frequency modulation in which data and clock signals are combined to form a single two-level self-synchronizing data stream. Each
Differential Manchester encoding
Differential_Manchester_encoding
Electronic circuit
Some modulation schemes, such as frequency modulation, survive the nonlinear distortion without ill effect (but schemes such as amplitude modulation do
Frequency_multiplier
loop – Phase – Phase distortion – Phase jitter – Phase modulation – Phase noise – Phase perturbation – Phased array – Phase-locked loop – Phase-shift keying
Index_of_electronics_articles
Analogue synthesizer
Matrix-12 (released a year later, in 1985). Utilizing Oberheim's Matrix Modulation technology, the Xpander combined analog audio generation (VCOs, VCF and
Oberheim_Xpander
3G mobile telecommunications protocols
64QAM modulation, MIMO, and Dual-Carrier HSDPA operation. Under 3GPP Release 11, even higher speeds of up to 337.5 Mbit/s were possible. The first phase of
High_Speed_Packet_Access
Electromagnetic wave that is not pulsed
pulses soft, appearing more rounded, or to use other modulation methods (e.g. phase modulation). Certain types of power amplifiers used in transmission
Continuous_wave
Non-commercial use of the radio spectrum
suppressed carrier (DSB-SC) Frequency modulation (FM) Independent sideband (ISB) Single sideband (SSB) Phase modulation (PM) Amateur television (ATV), also
Amateur_radio
Technique for measuring chemical composition of a gas
(OA-ICOS) or off-axis CEAS (OA-CEAS), wavelength modulation off-axis CEAS (WM-OA-CEAS), off-axis phase-shift cavity enhanced absorption spectroscopy (off-axis
Tunable diode laser absorption spectroscopy
Tunable_diode_laser_absorption_spectroscopy
Extracting timing information in serial communication
which is the process of re-creating a phase-locked version of the carrier when a suppressed carrier modulation scheme is used. These problems were first
Clock_recovery
level is low. The most common modulation techniques, wavelength modulation spectroscopy (WMS) and frequency modulation spectroscopy (FMS), achieve this
Laser_absorption_spectrometry
Sound transmission method
sound from ultrasound employs ''active modulation'' inside the transducer itself, contrasting with the nonlinear self-demodulation of a propagating beam as
Sound_from_ultrasound
Electronic device that alters audio
graphic equalizers, which modify frequency ranges; modulation effects such as chorus, flangers and phasers; pitch effects such as pitch shifters; and time
Effects_unit
Neurobiological theory
mechanics of modulation are not known at this time, and modulation has yet to be quantitatively identified. Qualitatively, aminergic modulation has been shown
Activation-synthesis hypothesis
Activation-synthesis_hypothesis
Synthesizer
Waveshaper – a triangle wave that is repeatedly wavefolded, Frequency Modulation (two operators) – a method of synthesis where a wave modulates the frequency
Arturia_MicroFreak
Mathematical model
Chen, James; Chen, Long-Qing (2015). "Modulation of dendritic patterns during electrodeposition: A nonlinear phase-field model". Journal of Power Sources
Phase-field_model
Topics referred to by the same term
spectrometry identification experiment Phase-shift keying, or Phase Shift Modulation, a digital modulation scheme Phase-shift mask, photomasks that take advantage
PSM
interaction seeds the self-modulation of the proton bunch, enforcing the grow over the 10m long plasma It also allows to create a phase reference for the
AWAKE
Return of a sign, symptom, or disease after a remission
models of cocaine abuse: genetic predisposition versus environmental modulation". Am J Psychiatry. 162 (8): 1473–82. doi:10.1176/appi.ajp.162.8.1473.
Relapse
Software synthesizer
shape, pluck shape, phaser shape, harmonizer distribution, etc.). Harmor offers the option of being able to draw one’s own modulation source curve using
Harmor
Antenna consisting of two rod-shaped conductors
electrically equivalent to two monopoles mounted end-to-end and fed with opposite phases, with the ground plane between them made virtual by the opposing monopole
Dipole_antenna
Breath-figure self-assembly is the self-assembly process of the formation of honeycomb micro-scaled polymer patterns by the condensation of water droplets
Breath-figure_self-assembly
Electronic devices that generate electronic signals
often include some sort of modulation function such as amplitude modulation (AM), frequency modulation (FM), or phase modulation (PM) as well as a second
Signal_generator
Classification of power amplifier
represents the signal by pulse-width modulation, pulse-density modulation, delta-sigma modulation or a related modulation technique before being applied to
Power_amplifier_classes
Telecommunications coding technique
condition, such as a zero amplitude in pulse-amplitude modulation (PAM), zero phase shift in phase-shift keying (PSK), or mid-frequency in frequency-shift
Non-return-to-zero
3–30 kHz range of the electromagnetic spectrum
attempts were made to use radiotelephone using amplitude modulation and single-sideband modulation within the band starting from 20 kHz, but the result was
Very_low_frequency
Automatic, involuntary response to a stimulus
behavior in both vertebrates and invertebrates. A good example of reflex modulation is the stretch reflex. When a muscle is stretched at rest, the stretch
Reflex
Machine that converts electrical energy into mechanical energy
that described three patented two-phase four-stator-pole motor types: one with a four-pole rotor forming a non-self-starting reluctance motor, another
Electric_motor
Three-dimensional imaging technique
which have the capability of combined phase/amplitude modulation. In the case of pure phase or amplitude modulation, clearly quality losses are unavoidable
Computer-generated_holography
Imaging technique
temporal modulation methods, such as phase-shifting and frequency-shifting for high sensitivity measurements in low light. The phase-shifting (or phase-stepped)
Digital_holography
Mirror-based electronic display technology
Optical Metrology Laser Beam Machining Phase space measurement with forward modeling Spatial Light Modulation Multivariate optical computing Digital Holographic
Digital_micromirror_device
Topics referred to by the same term
optical module, a hot-pluggable optical transceiver implementing a coherent modulation algorithm Coherence time (communications systems), duration when a communication
Coherence
Chemical compound
wavelengths. It has the highest reflectivity of the materials used for self-pumped phase conjugation (SPPC) applications. It can be used for continuous-wave
Barium_titanate
Family of digital video interfaces
zeroes or ones will be present on the interface. The interface is self-synchronizing and self-clocking. Framing is done by detection of a special synchronization
Serial_digital_interface
Information transmission rate expressed in bits per second
chosen during the connection establishment phase due to adaptive modulation – slower but more robust modulation schemes are chosen in case of poor signal-to-noise
Bit_rate
Biological neural circuit that produces rhythmic outputs in the absence of rhythmic input
have been found for CPG circuits: Modulation is intrinsic to CPG network or required for its activation Modulation changes the functional configuration
Central_pattern_generator
In ultrafast optics, spectral phase interferometry for direct electric-field reconstruction (SPIDER) is an ultrashort pulse measurement technique originally
Spectral phase interferometry for direct electric-field reconstruction
Spectral_phase_interferometry_for_direct_electric-field_reconstruction
Electronic musical instrument
methods including subtractive synthesis, additive synthesis, and frequency modulation synthesis. These sounds may be altered by components such as filters,
Synthesizer
Pharmaceutical compound
serotonin to positive and negative affect. MDMA may impair serotonergic modulation of harm sensitivity, yet the pattern of effects additionally suggests
MDMA/citalopram
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