Kuyesa kwa Fiber optic core reflection kumayendetsedwa ndi Optical Time Domain Reflectometer (OTDR). Chomwe ndi chipangizo chomwe chimagwiritsidwa ntchito kuti azindikire zolakwika mu ulalo wa fiber optical wa network network. OTDR imapanga kugunda mkati mwa ulusi kuti ayesere zolakwika kapena zolakwika. Zochitika zosiyanasiyana mkati mwa fiber zimapanga Rayleigh back scatter. Ma pulse amabwerera ku OTDR ndipo mphamvu zawo zimayesedwa ndikuwerengedwa ngati ntchito ya nthawi ndikukonzekera ngati ntchito ya fiber kutambasula. Mphamvu ndi chizindikiro chobwerera zimanena za malo ndi kukula kwa vuto lomwe liripo. Osati kukonza kokha, komanso ntchito zoyikira mizere zamagetsi zimagwiritsa ntchito ma OTDR.

OTDR ndiyothandiza poyesa kukhulupirika kwa zingwe za fiber optic. Ikhoza kutsimikizira kutayika kwa splice, kuyeza kutalika ndi kupeza zolakwika. OTDR imagwiritsidwanso ntchito kwambiri popanga "chithunzi" cha chingwe cha fiber optic ikangoyikidwa kumene. Pambuyo pake, kufananitsa kungapangidwe pakati pa mzere woyamba ndi wachiwiri wotengedwa ngati mavuto abuka. Kusanthula kutsata kwa OTDR kumakhala kosavuta nthawi zonse pokhala ndi zolembedwa kuchokera pazomwe zidapangidwa pomwe chingwecho chidayikidwa. OTDR ikuwonetsani komwe zingwe zimathetsedwa ndikutsimikizira mtundu wa ulusi, zolumikizira ndi zolumikizira. Ma trace a OTDR amagwiritsidwanso ntchito pothana ndi mavuto, chifukwa amatha kuwonetsa pomwe zopumira zili mu ulusi pamene zotsatizana zimafananizidwa ndi zolemba zoyika.

Jera chitani mayeso a FTTH dontho zingwe pa wavelengths (1310,1550 ndi 1625 nm). Timagwiritsa ntchito EXFO FTB-1 pamayeso apamwambawa. Kuwunika mtundu wa zingwe zathu kuonetsetsa kuti makasitomala athu atha kulandira zinthu zomwe zimakwaniritsa zofunikira.

Timayesa izi pazingwe zilizonse zomwe timatulutsa.
Laborator yathu yamkati imatha kupitilira mayeso ofananira ofananira.
Takulandirani kuti mutiuze kuti mudziwe zambiri.