NRZ SIGNAL CLOCK EXTRACTION DEVICE USING TWO-MODE FIBER
摘要
PURPOSE: An NRZ(Non Return to Zero) signal clock extraction method capable of using a two mode fiber is provided to perform the 3R(Retiming, Reshaping, Re-amplification) with the extracted clock signal by having a similar function with the previous clock signal. CONSTITUTION: An optical signal is modulated into an NRZ-DPSK(Differential Phase Shift Keying) signal through a modulator. The NRZ-DPSK signal is transformed to a RZ(Return to Zero)-OOK(On-Off Keying) signal through a converter by being constructive interference between the previous signal and the time-delayed signal. The RZ-OOK signal is extracted as an optical clock signal by being applied to a mode locked optical fiber ring laser through a circulator. The optical clock signal is a 10-GHz clock signal extracted from a 10-Gbit/s NRZ-DPSK signal, and the timing jitter is less than 1.6ps.
申请公布号
KR20130034916(A)
申请公布日期
2013.04.08
申请号
KR20110099081
申请日期
2011.09.29
申请人
MOKPO NATIONAL UNIVERSITY INDUSTRY-ACADEMIA COOPERATION GROUP
发明人
MAENG, SE YEONG;LEE, SEONG RO;JUNG, MIN A;MOON, MIN WOO;PARK, SUN;KO, SEUNG HO;PARK, CHANG SU;PARK, YIN SOO