RSOA AND THE OPERATING SYSTEM BASED ON DOWNSTREAM OPTICAL SIGNAL REUSE METHOD WITH FEED-FORWARD CURRENT INJECTION
摘要
An RSOA reusing a downlink optical signal by dynamic current injection and a driving apparatus thereof are provided to adjust dynamically a current injected to the RSOA according to the size of an input optical signal and reduce the residual ER(Extinction Ratio) of the optical signal, thereby reducing the power penalty of uplink transmission and improving transmission quality. An RSOA(Reflective Semiconductor Optical Amplifier)(600) includes a reflecting surface and an optical amplifying semiconductor. The reflecting surface reflects an input optical signal. The optical amplifying semiconductor is positioned in one side of the reflecting surface. The polarity of a first signal is reverse to the polarity of the input optical signal. A second signal modulates the input optical signal reflected from the reflecting surface into an output optical signal. The first and second signals are combined and injected to the optical amplifying semiconductor.
申请公布号
KR20070108422(A)
申请公布日期
2007.11.12
申请号
KR20060102456
申请日期
2006.10.20
申请人
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人
KIM, BYOUNG WHI;PARK, MAHN YONG;CHO, SEUNG HYUN;LEE, WOO RAM;LEE, JIE HYUN;JEONG, GEON;KIM, CHUL YOUNG