동적 파장분할다중화 시스템에서 신호대잡음비 및 비트에러율의 과도현상을 감소시키기 위한 어븀첨가광섬유증폭기 및 그 곳에서의 증폭 방법
이원경, 김광준, 박혁
- 7133196 (2006.11.07)
- Provided is an erbium-doped fiber amplifier reducing transient phenomena of a signal-to-noise ratio and a bit error rate in a dynamic wavelength division multiplexing system and an amplifying method using the erbium-doped fiber amplifier. The erbium-doped fiber amplifier includes: a polarization scrambler modulating a polarization state of an input signal to remove a polarization of the input signal; an amplifier amplifying the input signal from which the polarization has been removed; a detector reading powers of input and output signals of the amplifier; and an automatic gain controller controlling currents of the pump LDs according to the powers of the input and output signals read by the detector 1630 to maintain the gain even if the power of input signal changes.
- KSP 제안 키워드
- Automatic Gain Controller, Bit Error Rate(And BER), Erbium-doped fiber, Input signal, Signal noise ratio(SNR), Signal-to-Noise, Transient phenomena, WDM system, Wavelength Division Multiplexing(WDM), bit error, division multiplexing, doped fiber, erbium-doped fiber amplifier(EDFA), error rate, fiber amplifier, input and output, polarization state