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Titolo:
Rigorous assessment of small-signal analysis for linear and dispersive optical communication systems operating near zero-dispersion wavelength
Autore:
Cartaxo, AVT; Morgado, JAP;
Indirizzi:
Instoes,er Tecn, Dept Elect & Comp Engn, Opt Commun Grp, Inst Telecomunicac Inst Super Tecn Lisbon Portugal P-1049001 Commun Grp, Inst Telecomunicac
Titolo Testata:
JOURNAL OF LIGHTWAVE TECHNOLOGY
fascicolo: 1, volume: 17, anno: 1999,
pagine: 86 - 94
SICI:
0733-8724(199901)17:1<86:RAOSAF>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
LINEWIDTH ENHANCEMENT FACTOR; STRAINED-QUANTUM-WELL; FIBER; LASERS; GAIN;
Keywords:
fiber dispersion; fiber transfer function; frequency modulation; optical fiber communications; frequency noise; intensity modulation; intensity noise; laser noise; numerical simulation; optical fiber; semiconductor lasers;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Cartaxo, AVT Instoes,er Tecn, Dept Elect & Comp Engn, Opt Commun Grp, InstTelecomunicac Inst Super Tecn Lisbon Portugal P-1049001 nst Telecomunicac
Citazione:
A.V.T. Cartaxo e J.A.P. Morgado, "Rigorous assessment of small-signal analysis for linear and dispersive optical communication systems operating near zero-dispersion wavelength", J LIGHTW T, 17(1), 1999, pp. 86-94

Abstract

This paper presents a rigorous small-signal theory for linear single-mode fibers taking into account the first- and second-order fiber dispersion. From this theory, exact small signal intensity modulation (IM) and frequency modulation (FM) fiber transfer functions are presented. Exact expressions of the intensity and frequency noise spectra at fiber output due to laser noise taking into account all Langevin noise terms are also derived. Accuratenumerical simulations of the IM and FR;I fiber transfer functions, and intensity and frequency noise spectra after linear transmission along single-mode fiber are compared with theoretical predictions and very good agreementis achieved. In addition, the theoretical predictions are compared with other author's results and the discrepancies are thoroughly explained, A new expression for the transmission distance which can lead to further significant reduction of intensity noise spectrum in systems using single-mode lasers with reduced linewidth enhancement factor is presented, The theoretical and simulation results show that the magnitude of the small-signal IRI and FM fiber transfer functions, and the intensity and frequency noise spectra after linear single-mode fiber transmission are not affected by second-order fiber dispersion, The theory indicates that second-order fiber dispersionsolely introduces delay distortion in the IM and FM fiber transfer functions, So, with linear transmission second-order dispersion effects on the intensity and frequency noise have proved to be irrelevant even for very long broad-band fiber systems.

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Documento generato il 25/11/20 alle ore 09:57:25