Intangiriro kuri Sisitemu ya RF ikoresha fibre

Intangiriro kuri Sisitemu ya RF ikoresha fibre

RF hejuru ya fibreni imwe mu mikoreshereze y'ingenzi ya microwave fotonics kandi igaragaza ibyiza bidasanzwe mu nzego ziteye imbere nka microwave fotonic radar, inyenyeri telephoto, ndetse n'itumanaho ry'ibinyabiziga bitagira umuderevu.

RF hejuru ya fibreIhuriro rya ROFIgizwe ahanini n'ibikoresho byo kohereza amakuru, ibikoresho byo kwakira amakuru n'insinga z'amashanyarazi. Nkuko bigaragara ku Ishusho ya 1.

Utwuma twohereza amakuru: Lazeri zitanga ibitekerezo bikwirakwizwa (Lazeri ya DFB) zikoreshwa mu buryo bw'urusaku ruke no mu buryo bw'ingufu nyinshi, mu gihe laser za FP zikoreshwa mu buryo bufite ibisabwa bike. Izi laser zifite uburebure bwa 1310nm cyangwa 1550nm.

Umukiriya w'urumuri: Ku rundi ruhande rw'umukiriya w'urumuri, urumuri rugaragazwa na PIN photodiode y'umukiriya, igahindura urumuri rukongera kuba umuriro.

Insinga z'urumuri: Bitandukanye n'insinga za multimode, insinga za single-mode zikoreshwa mu miyoboro ihuza umurongo bitewe n'uko zitatana neza kandi zitakara cyane. Ku bunini bwa 1310nm, kugabanuka k'ikimenyetso cy'urumuri muri fibre y'urumuri biri munsi ya 0.4dB/km. Ku bunini bwa 1550nm, biri munsi ya 0.25dB/km.

Ihuza rya ROF ni sisitemu yo kohereza amakuru ikoresheje umurongo umwe. Hashingiwe ku miterere y'ihuza rya linear na optique, ihuza rya ROF rifite ibyiza bikurikira bya tekiniki:

• Igihombo gito cyane, hamwe no kugabanuka kwa fibre munsi ya 0.4 dB/km

• Ihererekanyamakuru rya fibre optique ultra-bandwidth, igabanuka rya fibre optique ntirishingiye ku nshuro

Iyi sano ifite ubushobozi bwo gutwara ikimenyetso/bandwidth iri hejuru, kugeza kuri DC kugeza kuri 40GHz

• Kubangamira amashanyarazi (EMI) (Nta ngaruka z'ikimenyetso mu gihe cy'ikirere kibi)

• Igiciro gito kuri metero imwe • Fibre optique iraryoha kandi yoroheje, ipima hafi 1/25 cy'abayobora umuraba na 1/10 cy'insinga za coaxial

• Imiterere yoroshye kandi yoroshye (ku bijyanye n'ubuhanga mu by'ubuvuzi no mu by'ikoranabuhanga)

Dukurikije imiterere y'icyuma gitanga urumuri, sisitemu ya RF hejuru y'umuyoboro w'amashanyarazi igabanyijemo ubwoko bubiri: uburyo bwo guhinduranya imikorere buziguye n'uburyo bwo guhinduranya imikorere buziguye. Uburyo bwo guhinduranya imikorere buziguye bw'uburyo bwo guhinduranya imikorere buziguye bukoresha laser ya DFB ikoresha uburyo bwo guhinduranya imikorere buziguye, bufite ibyiza byo kugabanuka, ingano nto kandi byoroshye kuyihuza, kandi bwakoreshejwe cyane. Ariko, bitewe n'uburyo bwo guhinduranya imikorere buziguye, RF hejuru y'umuyoboro w'amashanyarazi ishobora gukoreshwa gusa mu gice cy'umuyoboro kiri munsi ya 20GHz. Ugereranyije n'uburyo bwo guhinduranya imikorere buziguye, uburyo bwo guhinduranya imikorere buziguye buziguye bugizwe na laser ya DFB ifite umurongo umwe n'uburyo bwo guhinduranya imikorere buziguye. Bitewe n'uko ikoranabuhanga rya modulator ya electro-optic rimaze gukura, uburyo bwo guhinduranya imikorere buziguye buziguye buziguye bushobora kugera ku bikorwa mu gice cy'umuyoboro w'amashanyarazi kirenze 40GHz. Ariko, kubera ko hongewemomodulator y'amashanyarazi n'amatara, sisitemu iragoye cyane kandi ntiyorohereza ikoreshwa. Kuzamuka k'urusaku rwa ROF, imiterere y'urusaku n'imiterere y'ihindagurika ni ibipimo by'ingenzi by'imirongo ya ROF, kandi hari isano ya hafi hagati y'ibyo bitatu. Urugero, imiterere y'urusaku ruto bivuze imiterere minini, mu gihe inyungu nyinshi idasabwa na buri sisitemu gusa, ahubwo inagira ingaruka zikomeye ku bindi bice by'imikorere ya sisitemu.