Search results for "Refractive index modulation"

showing 2 items of 2 documents

Measurement of the Electrostriction-Induced Refractive Index Modulation Using Long Period Fiber Gratings

2020

We report the measurement of the refractive index modulation in optical fibers generated by electrostrictively driven acoustic waves through the change in transmission in a long period fiber grating.

Materials scienceOptical fibergenetic structuresElectrostrictionbusiness.industryPhysics::OpticsAcoustic waveLong-period fiber gratinglaw.inventionCondensed Matter::Materials ScienceOpticsRefractive index modulationTransmission (telecommunications)lawBrillouin scatteringotorhinolaryngologic diseasessense organsskin and connective tissue diseasesbusinessRefractive indexpsychological phenomena and processesOSA Advanced Photonics Congress (AP) 2020 (IPR, NP, NOMA, Networks, PVLED, PSC, SPPCom, SOF)
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Acousto-optical multiple interference devices

2008

We present a new concept for waveguide acousto-optical devices based on coupled MachZehnder interferometers driven by acoustic waves. These acousto-optical multiple interference devices use the periodic refractive index modulation induced by the acoustic wave to realize functionalities such as ON/OFF switching for an arbitrary time interval, as well as for efficient light modulation at high harmonics of the acoustic frequency and pulse shaping for, e.g., integrated Q-switches. We also discuss application of the concepts to light modulation by very high acoustic frequencies, where the acoustic wavelengths become much shorter than the optical ones.

Physicsbusiness.industryGeneral Physics and AstronomyPhysics::OpticsAcoustic waveEnginyeria acústicaCiència dels materialsInterference (wave propagation)Waveguide (optics)Pulse shapingWavelengthRefractive index modulationOpticsHarmonicsAstronomical interferometerOptoelectronicsbusiness
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