Results 21 to 30 of about 69,618 (273)

Fiber Lens Based Optical Antenna Design for OWC With Full Beam Coverage

open access: yesIEEE Photonics Journal, 2021
In infrared optical wireless communications, narrow beams require the perfect calibration of the base station (BS) and user terminal (UT), which cannot support multiple moving users. This paper proposes a fiber lens based optical antenna, which employs a
Chen Sun   +3 more
doaj   +1 more source

Dual polarization nonlinear Fourier transform-based optical communication system [PDF]

open access: yes, 2017
New services and applications are causing an exponential increase in internet traffic. In a few years, current fiber optic communication system infrastructure will not be able to meet this demand because fiber nonlinearity dramatically limits the ...
Gaiarin, Simone   +4 more
core   +3 more sources

Photonic Crystal and Photonic Crystal Fibers Communications [PDF]

open access: yes, 2016
The development of all optical communications could benefit from the index guiding photonic crystal fibers. In communication the photonic crystal fibers could provide many new solutions.
Muse, H. A. (Haider)
core   +2 more sources

Spatially Resolved Brillouin Spectral Hole Burning in PMF and SMF

open access: yesIEEE Photonics Journal, 2018
We observe the spectral hole burning effect in a polarization maintain fiber (PMF) and a single-mode fiber (SMF) through the interaction between a continuous wave (CW) beam and a high power pulse with two frequency components located around the Stokes ...
Xiaoxuan Zhong   +6 more
doaj   +1 more source

On the jitter of mode-locked pulses introduced by an optical fibre [PDF]

open access: yes, 1993
Measurements on the jitter of mode-locked pulses of a Nd:YLF laser after travelling through an optical fibre are presented. For low powers self phase modulation occurs which leaves the jitter unaltered.
Ernst, G.J., Mols, R.F.X.A.M.
core   +2 more sources

A MMIC QPSK Modulator

open access: yesActive and Passive Electronic Components, 2002
In this paper a MMIC QPSK modulator is described. The bit rate of the baseband signal is 155 Mbits/sec, while the frequency of the carrier is fLO=10 GHz . The modulation is performed directly at the RF band and therefore an IF stage is not necessary. The
Petros S. Tsenes   +3 more
doaj   +1 more source

X-Band MMIC Active Mixers

open access: yesActive and Passive Electronic Components, 2002
In this paper two active MMIC mixers for RF front-end applications are described. A down-converter that converts an RF signal (fRF=10.45 GHz) into an IF signal (fIF=0.95 GHz) using an LO signal (fLO=9.5 GHz) and an up-converter that performs the ...
Ptros S. Tsenes   +2 more
doaj   +1 more source

Angular Momentum-Dependent Transmission of Circularly Polarized Vortex Beams Through a Plasmonic Coaxial Nanoring

open access: yesIEEE Photonics Journal, 2018
In this paper, we report on the theoretical and numerical study of the transmission of circularly polarized vortex beams through a plasmonic coaxial nanoring.
Shuai Wang   +9 more
doaj   +1 more source

Arbitrary polarization conversion dichroism metasurfaces for all-in-one full Poincaré sphere polarizers

open access: yesLight: Science & Applications, 2021
The control of polarization, an essential property of light, is of broad scientific and technological interest. Polarizers are indispensable optical elements for direct polarization generation.
Shuai Wang   +8 more
doaj   +1 more source

Study of Optical Fiber Design Parameters in Fiber Optics Communications

open access: yesKurdistan Journal of Applied Research, 2017
Fiber optics is an important part in the telecommunication infrastructure. Large bandwidth and low attenuation are features for the fiber optics to provide gigabit transmission.
Salim Qadir Mohammed   +1 more
doaj   +1 more source

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