... loi OXC bao gm OXC chuyn mch si FXC (Fiber XC), OXC la chn bc song WSXC (Wavelength Selected XC) v OXC trao i bc song (Wavelength Interchange XC) 1.9.1 Chc nng ca b u ni cheo OXCOXC cung cp cỏc ... cheo OXC, b OXC cho phep cu hỡnh li mng quang o, cỏc ng truyn co th c thit lp v kt thỳc cn thit No c cu trỳc vi mch tớch hp rt ln v kh nng ni kt hng ngn u vo/ra V phng din ng dng, co loi OXC ... song 40 1.9 Thit b u ni cheo quang OXC (Optical Cross Connect) .41 1.9.1 Chc nng ca b u ni cheo OXC 41 1.9.2 Cu trỳc ca b u ni cheo OXC 42 1.10 B bin i bc song ...