Ultra-ntev kev sib kis: Fiber Optic Sparitic Technic, uas tsim nyog cov duab kev tsim qauv, thiab lwm yam kev tswj hwm cov khoom lag luam kom meej: los ntawm cascading lossis daisy saw Kev sib txuas, tswj hwm nruab nrab ntawm ntau cov khoom siv tau ua tiav los txhim kho kev tswj hwm kev txuag. Muaj kev nyab xeeb thiab txhim khu kev qha: Fiber ntau qhov kev tawm tsam muaj zog tiv thaiv muaj peev xwm thiab tsis yooj yim eavesdropped los yog cuam tshuam nrog, kom muaj kev ruaj ntseg ntawm cov ntaub ntawv kis.
