نتایج جستجو برای: dwdm
تعداد نتایج: 634 فیلتر نتایج به سال:
The fiber-optic communication lines and transmission systems using cable, receiving transmitting optical modules based on WDM DWDM (Wavelength Division Multiplexing & Dense WDM) technologies are studied. A method for calculating the characteristics is proposed relationships obtained that establish an analytical relationship between length regeneration section rate. This paper discusses stud...
The performance of moment generating function approaches, specifically Chernoff bound (CB) and modified (MCB), is examined improved in this study. We evaluates enhances the a wavelength division multiplexing (WDM) technique for free-space optical (FSO) fibre communications based on passive network (PON) using M-ary digital pulse-position modulation (M-ary DPPM) schemes under amplified spontaneo...
In this paper, 32 × 10Gb/s dense wavelength division multiplexing (DWDM) optical system using ytterbium doped fiber amplifier (YDFA) having 100GHz, 75GHz, 50GHz and 25GHz channel spacing with starting frequency 193.414THz has been investigated. The performance of the end channel (first) has been considered being the worst case scenario to analyze the system. The DWDM system is evaluated by vary...
The paper describes reasons for a new Gbit/s-Network as there are growing quantitative and qualitative demands caused by increasing traffic and by new innovative applications. Based on traffic measurements forecasts for a new network were made. The G-WiN backbone platform will be based on SDH/DWDM technology. The G-WiN will offer the following services: • IP (PoS) ( in the first phase „best eff...
This paper presents an investigation of the power penalties imposed by four-wave mixing (FWM) on G.652 (SingleMode Fiber SMF), G.653 (Dispersion-Shifted Fiber DSF), and G.655 (Non-Zero Dispersion-Shifted Fiber NZDSF) compliant fibers, considering the DWDM grids suggested by the ITU-T Recommendations G.692, and G.694.1, with uniform channel spacing of 100, 50, 25, and 12.5 GHz. The mathematical/...
We describe a model of Raman-parametric hybrid amplifier and present its simulation results for flat gain amplification in Dense Wavelength Division multiplexed (DWDM) terabits capacity system. In the proposed configuration single pump FOPA is cascaded after Raman to form a hybrid with each implemented in separate length of fiber. This allows for maximum optimization of gain achieved using Rama...
The tremendous growth of the high speed Internet and data traffic has created an enormous demand for transmission bandwidth of dense wavelength division multiplexed (DWDM) optical communication systems. With the advancement of wideband fiber-optical amplifiers, DWDM optical transmission systems are capable of providing capacities in excess of hundreds of gigabits per second over hundreds of kil...
The use of tunable lasers (TL) in dense wavelength division multiplexed (DWDM) networks for optical switching, routing and networking has gained a lot of interest in recent years. Employment of such TLs as tunable transmitters in wavelength packet switched (WPS) networks is one of the possible applications of these devices. In such systems, the information to be transmitted could be encoded ont...
Results of optical frequency transfer over a carrier-grade dense-wavelength-division-multiplexing (DWDM) optical fiber network are presented. The relation between soil temperature changes on a buried optical fiber and frequency changes of an optical carrier through the fiber is modeled. Soil temperatures, measured at various depths by the Royal Netherlands Meteorology Institute (KNMI) are compa...
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