BROADBAND EDFA FOR MINIMIZING INTERFERENCE OF BAND

摘要

PURPOSE: A broadband EDFA(Erbium Doped Fiber Amplifier) for minimizing interference of a band is provided to minimize the interference between bands by passing optical signals of an L-band to a C/L splitter twice and coupling optical signals of a C-band to the optical signals of the L-band. CONSTITUTION: A broadband EDFA for minimizing interference of a band includes the first EDF(226), the second EDF(232), a C/L splitter(230), a reflector(238), a circulator(228), and a C/L combiner(240). The first EDF(226) is used for amplifying optical signals which are received from the first wavelength selection coupler. The second EDF(232) is used for amplifying optical signals of an L-band which are received from the second wavelength selection coupler. The C/L splitter(230) is used for dividing the optical signals into a C-band and the L-band. The reflector(238) is used for transmitting the optical signals of the L-band to the second EDF and reflecting the transmitted optical signals to second EDF. The circulator(228) is used for inducing the optical signals of the L-band to other direction. The C/L coupler(240) is used for coupling the divided optical signals of the C-band to the induced optical signals of the L-band.