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학술지 Distributed fiber Raman amplifiers with localized loss
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저자
김승관, 장순혁, 한진수, 주무정, 이종현
발행일
200305
출처
IEEE/OSA Journal of Lightwave Technology, v.21 no.5, pp.1286-1293
ISSN
0733-8724
출판사
Optical Society of America (OSA)
DOI
https://dx.doi.org/10.1109/JLT.2003.810600
협약과제
02MT1600, 테라비트급 WDM 광전송시스템 기술, 이종현
초록
Backward pumped C- and L-band distributed fiber Raman amplifiers are described, where discrete losses from 0-8 dB were added at various positions to examine the effect of localized loss. Below 3-dB additional loss, the overall optical performance degraded similarly, regardless of loss position in a hybrid Raman and erbium-doped fiber amplifier. Above 3 dB, the performance degradation worsened as the loss position became closer to the signal output. The spectral shape change of the fiber output against loss variation was made tolerable within 짹0.4 dB simply by balancing the output power of L band with that of C band, unless the loss was close to pump input. The tolerance provides design flexibility for hybrid optical amplifiers and allows the use of fixed gain-flattening filters.
키워드
Distributed amplifiers, Erbium-doped fiber amplifiers (EDFAs), Fiber amplifiers, Hybrid optical amplifiers, Optical amplifiers, Optical transmission, Raman amplifiers, Wavelength-division multiplexing (WDM)
KSP 제안 키워드
Additional loss, Backward pumped, C-band, Design flexibility, Distributed amplifier(DA), Fiber Raman amplifier, Gain flattening filter, L-band, Output power, Spectral Shape, erbium-doped fiber amplifier(EDFA)