다중파장 광 전송 시스템에서 광 신호 성능 측정 장치 및 방법
- 6791685 (2004.09.14)
01MT2500, 1.3Tb/s 광 회선분배 시스템(OXC)기술,
- An optical signal performance monitoring apparatus in a multi-channel optical transmission system and a method for monitoring the optical signal performance. The optical signal performance monitoring apparatus in the multi-channel optical transmission system includes an optical input unit for controlling the spot size of an inputted multi-channel optical signal and generating a 1.sup.st multi-channel beam; a diffraction and reflection unit for diffracting and reflecting the 1.sup.st multi-channel beam; and generating a 2.sup.nd multi-channel beam which is divided by wavelength and is in parallel with the 1.sup.st multi-channel beam; an optical collimation and concentration unit for collimating the 1.sup.st multi-channel beam and concentrating the 2.sup.nd multi-channel beam which is divided by wavelength; and an optical detection unit for measuring the intensity of the 2.sup.nd multi-channel beam focused by wavelength, and measuring the optical signal-to-noise ratio by measuring the optical intensity corresponding to each wavelength and an amplified spontaneous emission (ASE) noise strength at a point between optical signals.
- KSP 제안 키워드
- Amplified spontaneous emission (ASE) noise, Channel beam, Diffraction and reflection, Multi-channel beam, Noise strength, Optical Signal-To-Noise Ratio(OSNR), Optical detection, Optical intensity, Optical signal, Optical transmission system, Performance monitoring, Signal noise ratio(SNR), Signal-to-Noise, Spot size, Transmission system, amplified spontaneous emission, and reflection, multi-channel, optical transmission, spontaneous emission