Eo Modulator Urukurikirane: cyclic fibre loop muri tekinoroji ya laser

“Impeta ya cyclic fibre” ni iki? Ni bangahe ubiziho?

Igisobanuro: Impeta ya fibre optique inyuramo urumuri rushobora kuzunguruka inshuro nyinshi

Impeta ya cyclic fibre ni aibikoresho bya fibre optiquemurumuri rushobora kuzenguruka inshuro nyinshi. Ikoreshwa cyane cyane murwego rurerure optique ya fibre itumanaho. Ndetse hamwe n'uburebure butagira inganofibre optique, urumuri rwibimenyetso rushobora kwanduzwa intera ndende cyane mukuzunguruka inshuro nyinshi. Ibi bifasha kwiga ingaruka mbi hamwe na optique idafite umurongo bigira ingaruka kumucyo wikimenyetso.

Muri tekinoroji ya laser, cyclic fibre loop irashobora gukoreshwa mugupima umurongo wa alaser, cyane cyane iyo linewidth ari nto cyane (<1kHz). Ubu ni ubwiyongere bwikigereranyo cyo kwipima-heterodyne umurongo wo gupima, udakenera lazeri yinyongera kugirango ubone ibimenyetso byerekana ubwayo, bisaba gukoresha fibre ndende imwe. Ikibazo hamwe na tekinoroji yo kumenya-heterodyne ni uko gutinda gusabwa ari gutondekanya kimwe no gusubiranamo ubugari bwumurongo, kuburyo ubugari bwumurongo ari kHz nkeya, ndetse no munsi ya 1kHz bisaba uburebure bwa fibre nini cyane.

Igishushanyo 1: Igishushanyo mbonera cyimpeta ya fibre.

Impamvu yibanze yo gukoresha fibre fibre ni uko uburebure buringaniye bushobora gutanga gutinda igihe kirekire kuko urumuri rugenda ruhinduka muri fibre. Kugirango utandukanye urumuri rwoherejwe mumirongo itandukanye, moderi ya acousto-optique irashobora gukoreshwa mumuzinga kugirango itange impinduka runaka (urugero, 100MHz). Kuberako iyi frequency ihindagurika nini cyane kuruta ubugari bwumurongo, urumuri rwagenze numubare utandukanye wimpinduka mumuzingo urashobora gutandukana murwego rwumurongo. Murigufotora, umwimerereurumurino gukubita urumuri nyuma yo guhinduranya inshuro zirashobora gukoreshwa mugupima ubugari bwumurongo.

Niba nta gikoresho cyongera imbaraga muri loop, igihombo muri moderi ya acousto-optique na fibre nini cyane, kandi ubukana bwurumuri buzangirika cyane nyuma yizunguruka nyinshi. Ibi bigabanya cyane umubare wibizunguruka iyo bipimye umurongo. Amashanyarazi ya fibre arashobora kongerwaho kumurongo kugirango akureho iyi mbogamizi.

Nyamara, ibi bitera ikibazo gishya: nubwo urumuri runyura muburyo butandukanye ruratandukanye rwose, ikimenyetso cyo gukubita kiva mubice bibiri bya fotone, bihindura bitsike muri rusange. Impeta ya fibre optique irashobora gutegurwa muburyo bwiza kugirango ibuze izo ngaruka. Hanyuma, ibyiyumvo bya cyclic fibre loop bigarukira ku rusaku rwafibre amplifier. Birakenewe kandi gusuzuma uburinganire bwa fibre hamwe numurongo utari Lorentz mugutunganya amakuru