6533b7dcfe1ef96bd1272055
RESEARCH PRODUCT
Electrically tunable photonic true-time-delay line
Antonio DiezMiguel V. AndrésJose L. CruzYuri O. Barmenkovsubject
PHOSFOSTime FactorsMaterials scienceTransducersPhysics::OpticsGratinglaw.inventionOpticsFiber Bragg gratinglawBlazed gratingFiber Optic TechnologyMicrowavesGroup delay and phase delaySidebandbusiness.industryAcousticsModels TheoreticalLong-period fiber gratingÒpticaTrue time delayAtomic and Molecular Physics and OpticsRefractometryTelecommunicationsOptoelectronicsbusinessdescription
We present a new application of the acousto-optic superlattice modulation of a fiber Bragg grating based on the dynamic phase and group delay properties of this fiber-optic component. We demonstrate a tunable photonic true-time-delay line based on the group delay change of the light reflected from the grating sidebands. The delay is electrically tuned by adjusting the voltage applied to a piezoelectric transducer that generates the acoustic wave propagating along the grating. In our experiments, a true-time delay of 400 ps is continuously adjusted (300 ps within the 3 dB amplitude range of the first sideband), using a 12 cm long uniform grating.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-01-01 |