نتایج جستجو برای: optical link
تعداد نتایج: 451899 فیلتر نتایج به سال:
we report the first demonstration of a long-distance ultra stable frequency dissemination in the microwave range. A 9.15 GHz signal is transferred through a 86-km urban optical link with a fractional frequency instability of 1.3×10 at 1 s integration time and below 10 at one day. The optical link phase noise compensation is performed with a round-trip method. To achieve such a result we impleme...
We apply the Empirical Mode Decomposition (EMD) algorithm and Time Convolutional Network (TCN) structure, predicated on Neural Networks, to successfully enable feature extraction within high-precision optical time-frequency signals, provide effective identification alerts for abnormal link states. Experimental validation confirms that proposed method not only delivers an efficacy par with tradi...
Abstract Free space optical communication is a potential technology that exploits the visible light frequency band for communication. In this paper, free-space link (FSOL) optimization in (VLC) used to improve channel performance signal strength and analyze effect of failures system. The data transmission reception phenomenon are established using light-emitting diode (LED) as carrier at transm...
Wavelength-division multiplexing (WDM) technology has been improving steadily in recent years, with existing systems capable of providing huge amounts of bandwidth on a single fiber link. WDM systems are currently being deployed in long-distance telecommunication networks on a point-to-point basis, with the optical signals being converted back to electronics at each node. The electronic switchi...
Free Space Optics (FSO) or optical wireless communication is a promising solution for the need to very high data rate point-to-point communication. In FSO communication links, atmospheric turbulence causes fluctuations in both the intensity and the phase of the received light signal, impairing link performance. This intensity fluctuation, also known as scintillation is one of the most important...
-In modern optical fiber communication systems, dispersion and nonlinear effect of optical fiber are the two main factors of decreasing communication quality, especially in Group Velocity Dispersion (GVD). In this paper, we use single-mode transmission fiber, Dispersion Compensation Fiber (DCF) and erbium-doped fiber amplifier (EDFA) to design a dispersion compensation optical fiber communicati...
Optical and radio frequency standards located in JILA and National Institute of Standards and Technology (NIST) laboratories have been connected through a 3.45-km optical fiber link. An optical frequency standard based on an iodine-stabilized Nd:YAG laser at 1064 nm (with an instability of ;4 3 10214 at 1 s) has been transferred from JILA to NIST and simultaneously measured in both laboratories...
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