000			02196nam a2200301Ia 4500
005			20250223033131.0
008			231030s9999 xx 000 0 und d
049			_aDeposit
082			_a530
097			_aM.Sc
099			_aCai01.24.11.M.Sc.2021.Mo.L
100			_aMoataz Basione ,
245			_aLaser wavelength comb generation for ultra-dense optical access networks / _cMoataz Basione ; Yehia Badr , Tawfik Ismail , Hossam Selmy
246			_a” توليد الليزر بأطوال موجية مشطيه لالستخدام فيشبكات التوصيل الضوئية فائقة الكثافة
260			_c2022.
502			_aThesis (M.Sc.)-Cairo University - National institute of laser Enhanced sciences - Department of Engineering Applications of Laser
504			_aBibliography: p. 87-90.
520			_aThe optical communication system is consists of source, optical fiber, and detectors. The optical fiber represents transmission media which transport laser from the source to de- tector. The laser is being a carrier for information. Building optical passive network (PON) with low cost (that is mean low number of optical fiber, and optical sources) is being achieved by Wave Division Multiplexer PON (WDM-PON). The WDM-PON in- creases the number of used wavelengths (carriers) and reduces the spaces between them. Establishing PON with capacity reach to thousands end-users and 1 Gbit/s data rate over a single fiber needs new phenomena called Ultra-Dense WDM (UDWDM). The UD- WDM approach can be realized using Optical Frequency Comb (OFC) technique. The OFC is a technique that generates several coherent harmonics of its input signal with very narrow separation. The main parameters of OFC are occupied bandwidth, number of wavelengths, spectral flatness, and Optical Signal to Noise Ratio (OSNR). In this thesis we illustrated new three systems to generate OFC with large number of lines
650			_aLaser
653			_aUDWDM
700			_aYehia Badr
856			_uhttp://172.23.153.220/th.pdf
905			_aMohamady
942			_cTH _2ddc
999			_c164518 _d164518
336			_2rda content _atext
337			_2rdamedia _aUnmediated
338			_2rdacarrier _avolume