대용량 멀티미디어 서비스의 증가에 따른 코아 라우터간 인터페이스 속도의 지속적인 증가는 단거리 망에서 100기가비트 이더넷 (100GbE) 표준 제정을 촉발하였고, 장거리 광 전송망에서 단일 파장당 100기가 속도의 전송을 요구하고 있다. 따라서 본 논문에서는 100GbE 신호의 광전송망 수용을 위해 100기가급 광 변복조 기술을 비교하고 분석한다. 다음으로 DQPSK (Differential quadrature phase shift keying) 방식에 기초한 단일 파장당 107Gb/s 속도의광 송수신기 구현에 대해 논의하며 2 Tb/s(107Gb/s x 20채널) 신호를 320 km 전송하여 100GbE 신호의 장거리 전송 가능성을 확인한다. 그리고 100G 시스템으로 업그레이드 시 10G/40G/100G 신호가 혼용되어 전송되는 멀티 레이트 시스템의 성능을 분석하고 성능 보장 방법에 대해 논의한다.
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