Ƙirar hanyar gani na lasers pulsed rectangular

Tsarin hanyar gani na rectangularpulsed lasers

Bayanin ƙirar hanyar gani

A m yanayin-kulle dual-wavelength dissipative soliton resonant thulium-doped fiber Laser bisa tsarin madubin zoben fiber mara kyau.

2. Bayanin hanyar gani

Soliton mai rarrabuwar kawuna biyu-biyu resonant thulium-dopedfiber Laseryana ɗaukar ƙirar tsarin rami mai siffa "8" (Hoto 1).

Bangaren hagu shine babban madauki na unidirectional, yayin da bangaren dama shine tsarin madubi na madauki na fiber na gani mara kyau. Madauki na unidirectional na hagu ya haɗa da mai rarraba dam, 2.7m thulium-doped fiber optic (SM-TDF-10P130-HE), da 2 μm band fiber ma'aunin fiber tare da haɗin haɗakarwa na 90:10. Isolator mai dogaro da polarization ɗaya (PDI), Masu Gudanar da Polarization guda biyu (Masu kula da Polarization: PC), Fiber mai kula da Polarization 0.41m (PMF). Tsarin madubi na zobe na fiber na gani mara kyau a hannun dama yana samuwa ta hanyar haɗa haske daga madauki na hagu na hagu zuwa madubin zobe na fiber na gani mara kyau a hannun dama ta hanyar 2 × 2 na'ura mai ba da hanya tsakanin hanyoyin sadarwa tare da ƙididdiga na 90:10. Tsarin madubi na zoben fiber na gani mara kyau a hannun dama ya haɗa da fiber na gani mai tsayin mita 75 (SMF-28e) da mai sarrafa polarization. Ana amfani da fiber na gani guda 75-mita guda ɗaya don haɓaka tasirin mara kyau. Anan, ana amfani da 90:10 fiber coupler don ƙara bambance-bambancen lokaci mara iyaka tsakanin yaɗuwar agogo da agogon gaba. Jimlar tsawon wannan tsari mai tsayi biyu shine mita 89.5. A cikin wannan saitin gwaji, hasken famfo ya fara wucewa ta hanyar haɗin katako don isa ga samun matsakaicin thulium-doped fiber optic. Bayan fiber na gani na thulium-doped, an haɗa haɗin 90:10 don kewaya 90% na makamashi a cikin rami kuma aika 10% na makamashi daga cikin rami. A lokaci guda, matatar Lyot mai birefringent ta ƙunshi filaye mai kula da polarization wanda ke tsakanin masu sarrafa polarization guda biyu da polarizer, wanda ke taka rawa wajen tace tsawon zango.

3. Ilimin baya

A halin yanzu, akwai hanyoyi guda biyu na asali don haɓaka ƙarfin bugun jini na laser pulsed. Ɗayan hanya ita ce ta rage tasirin da ba a kan layi ba kai tsaye, ciki har da rage girman ƙarfin bugun jini ta hanyoyi daban-daban, irin su yin amfani da gudanarwa na watsawa don ƙaddamar da bugun jini, giant chirped oscillators, da katako-tsara pulsed Laser, da dai sauransu. Hanyar da aka ambata a sama na iya samun nasarar haɓaka ƙarfin bugun bugun jini napulsed Laserzuwa dubun nanojoules. Rawawar soliton resonance (Dissipative soliton resonance: DSR) tsari ne na samuwar bugun jini rectangular da farko N. Akhmediev et al. a cikin 2008. Siffar dissipative soliton resonance bugun jini shi ne, yayin da kiyaye amplitude akai-akai, bugun jini nisa da makamashi na mara igiyar ruwa tsaga rectangular bugun jini ƙara monotonically tare da karuwa da famfo ikon. Wannan, zuwa wani ɗan lokaci, ya karya ta iyakancewar ka'idar soliton na gargajiya akan makamashin bugun jini guda ɗaya. Za'a iya samun rarrabuwar soliton resonance ta hanyar gina cikakken sha da jujjuya cikakken sha, kamar tasirin jujjuyawar polarization mara nauyi (NPR) da tasirin madubin zoben fiber mara nauyi (NOLM). Yawancin rahotanni game da tsararrun motsin motsin soliton mai ɓarna sun dogara ne akan waɗannan hanyoyin kulle yanayin guda biyu.