Design of wideband hybrid amplifiers for local area networks

Author

Karásek, M. ; Menif, M. ; Bellemare, A.

Author_Institution

Inst. of Radio Eng. & Electron., Acad. of Sci. of Czech Republic, Prague, Czech Republic

Volume

148

Issue

3

fYear

2001

fDate

6/1/2001 12:00:00 AM

Firstpage

150

Lastpage

155

Abstract

Optimisation of design parameters of hybrid fibre amplifiers for multi-wavelength operation in local area networks is presented. The authors consider hybrid amplifiers consisting of a distributed Raman fibre amplifier (RFA) and a remotely pumped discrete erbium-doped fibre amplifier (EDFA). The design is based on a numerical model that includes pump-to-pump and signal-to-signal interactions and generation of amplified spontaneous emission (ASE) in the RFA, and solves the standard rate equations and propagation equations for pump, signal and ASE spectral components within the EDFA. An efficient average power analysis algorithm has been used to solve the equations. To achieve a 40 nm bandwidth with gain ripple less than 10% and net gain higher than 10 dB, three pump laser diodes (LDs) must be used when wavelength-division-multiplexed (WDM) signals are transmitted in the C-band but only one pump LD is sufficient for 50 WDM channels with 0.8 nm spacing placed in the L-band

Keywords

Raman lasers; laser theory; optical communication equipment; optical design techniques; optical fibre LAN; optical fibre amplifiers; superradiance; wavelength division multiplexing; wideband amplifiers; 10 dB; ASE spectral components; C-band; EDFA; L-band; amplified spontaneous emission; design parameters; distributed Raman fibre amplifier; efficient average power analysis algorithm; gain ripple; hybrid fibre amplifiers; local area networks; multi-wavelength operation; net gain; numerical model; optimisation; propagation equations; pump-to-pump interactions; remotely pumped discrete erbium-doped fibre amplifier; signal-to-signal interactions; standard rate equations; three pump laser diodes; wavelength-division-multiplexed signals; wideband hybrid amplifiers;

fLanguage

English

Journal_Title

Optoelectronics, IEE Proceedings -

Publisher

iet

ISSN

1350-2433

Type

jour

DOI

10.1049/ip-opt:20010552

Filename

940562