نتایج جستجو برای: dense wavelength division multiplexing dwdm method
تعداد نتایج: 1822535 فیلتر نتایج به سال:
In this paper, we enhance the performance efficiency of free-space optical (FSO) communication link using hybrid on-off keying (OOK) modulation, M-ary digital pulse position modulation (M-ary DPPM), and M-pulse amplitude (M-PAPM). This work analyzes enhances bit error rate (BER) moment generating function, modified Chernoff bound, Gaussian approximation techniques. existence both an amplified s...
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Low-cost tunable lasers are key enablers for next-generation dense wavelength division multiplexing (DWDM) based access and metro networks. At present, tunable lasers are mostly deployed in long-haul optical transmission systems due to their high cost resulting from fabrication and operation complexity for structures such as sampled grating distributed Bragg reflector (SGDBR) [1,2]. For wide de...
In a power grid used to distribute electricity, optical fibers can be inserted inside overhead ground wires to form an optical network infrastructure for data communications. Dense wavelength division multiplexing (DWDM)-based optical networks present a promising approach to achieve a scalable backbone network for power grids. This paper proposes a complete optimization procedure for optical ne...
The next generation optical network demands unprecedented performance due to ultra-high aggregate bandwidth and the many channels transported by a single fiber. In dense wavelength division multiplexing (DWDM) networks, optical channels travel for hundreds of kilometers and thus they suffer from attenuation, noise, jitter, dispersion and other degradations due to photon-matter interactions. Amo...
This paper addresses the design of arrayed waveguide grating (AWG) devices from the viewpoint of –3dB bandwidth and free spectral range. A straightforward numerical method of obtaining the physical dimensions of a real device for given – 3dB bandwidth and free spectral range is presented. The paper assesses also the influence of the –3dB bandwidth of the AWG on the performance of a dense wavele...
Solid-spaced filters are composed of one or several thin wafers of excellent optical quality acting as Fabry-Perot spacer layers. We study the different steps of the design and the manufacture of filters following dense-wavelength-division-multiplexing specifications. The design method of such filters requires a tight synergy between numerical simulations and experimental characterizations to c...
In Wavelength Division Multiplexing based Passive Optical Network (WDM-PON), multiple wavelength used to separate Optical Network Unit (ONU). Which actually increase the capacity of PON . WDM process can be dense and ultra-dense depending on channel spacing. In this paper we compare performance of Array Waveguide Grating Demultiplexer (AWG DEMUX) and Fiber Bragg Grating based Demultiplexer (FBG...
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