Nyob rau hauv ntau lub cable TVs, vim hais tias cov teeb liab kis tau tus mob yuav tsum tau paub, ib tug modulator yog technically siv los ua kom tiav lub hom phiaj no. Ntawm ntau lub tshuab modulator, faib fiber ntau optic sensing tshuab yog dav siv.
Vim hais tias kev faib khoom siv fiber ntau siv tshuab muaj peev xwm ua tau ib txhij tau txais cov ntaub ntawv faib khoom ntsuas uas hloov nrog lub sij hawm thiab qhov chaw nyob rau hauv cheeb tsam sensing fiber ntau, PBI modulator muaj ntau yam zoo, thiab nws cov yam ntxwv tseem ceeb yog:
① Cov ntsiab lus pom hauv cov khoom siv kho qhov muag pom tau tsuas yog cov khoom siv kho qhov muag xwb;
② Kev ntsuas ib-dimensional faib daim ntawv qhia nyob rau hauv tag nrho cov optical fiber cheeb tsam yuav muab tau nyob rau hauv ib qho kev ntsuas, thiab ntsuas ob-dimensional thiab peb-dimensional faib yuav ntsuas los ntawm erecting lub optical fiber nyob rau hauv ib tug grating zoo;
③ Qhov kev daws teeb meem ntawm qhov nruab nrab feem ntau yog nyob ntawm qhov kev txiav txim ntawm metres, yog li tsuas yog tus nqi nruab nrab ntawm qhov ntsuas kev hloov pauv hauv qhov nqaim tuaj yeem pom;
④ Feem ntau muaj kev sib koom ua ke ntawm kev ntsuas qhov tseeb thiab qhov kev daws teeb meem spatial ntawm lub kaw lus;
⑤ Lub teeb pom kev pom feem ntau tsis muaj zog, yog li lub teeb liab ua haujlwm yuav tsum muaj qhov sib piv ntawm lub teeb liab-rau-suab nrov dua;
⑥ Vim qhov xav tau ntawm cov teeb liab ntau ntxiv thiab qhov nruab nrab, kev soj ntsuam zaus, kev soj ntsuam theem thiab lwm yam hauv cov txheej txheem tshawb nrhiav, nws yuav siv sij hawm ntev kom ua tiav kev ntsuas.
