Search results for "Circular polarization"

showing 2 items of 62 documents

Simultaneous polarization attraction and Raman amplification of a light beam in optical fibers

2012

International audience; In this paper, we demonstrate that it is possible to combine both Raman amplification and polarization attraction of a signal wave in a single optical fiber by means of a counterpropagating scheme. Experiments were performed near 1550 nm in a continuous wave regime and by means of a 10 Gbit ∕ s return-to-zero signal injected in a 20 kmlong low polarization mode dispersion optical fiber. Complete repolarization and 6.7 dB amplification of the signal wave was achieved by injecting a 850 mW, 1480 nm counterpropagating polarized pump wave.

optical fiberRaman amplificationMaterials sciencePhysics::OpticsFOS: Physical sciencesPolarization-maintaining optical fiber02 engineering and technology01 natural sciences010309 optics020210 optoelectronics & photonicsOptics0103 physical sciences0202 electrical engineering electronic engineering information engineeringDispersion-shifted fiberCircular polarizationpolarization[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics][ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics]business.industrynonlinear opticsSingle-mode optical fiberStatistical and Nonlinear PhysicsAtomic and Molecular Physics and OpticsOCISCross-polarized wave generationPolarization mode dispersionOptoelectronicsbusinessPhysics - OpticsPhotonic-crystal fiberOptics (physics.optics)
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A Telemetry, Tracking, and Command Antennas System for Small-Satellite Applications

2019

Circularly polarized (CP) antennas are used in space applications for telemetry tracking and command (TT&amp

small satellitesComputer Networks and CommunicationsFrequency bandTT&amplcsh:TK7800-836002 engineering and technologyTracking (particle physics)circular patchOpticsCircular patch; Circular polarization; Small satellites; TT&CComputer Science::Systems and ControlCTelemetryTelecommunications link0202 electrical engineering electronic engineering information engineeringElectrical and Electronic EngineeringCircular polarizationComputer Science::Information TheoryPatch antennaPhysicsbusiness.industryAxial ratio020208 electrical & electronic engineeringlcsh:ElectronicsAstrophysics::Instrumentation and Methods for Astrophysics020206 networking & telecommunicationsHardware and ArchitectureControl and Systems EngineeringPhysics::Space PhysicsSignal Processingcircular polarizationAntenna (radio)businessSmall satelliteElectronics
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