Kodi semiconductor optical amplifier imakwaniritsa bwanji kukulitsa?

Kodi zimatheka bwanjisemiconductor kuwala amplifierkukwaniritsa kukulitsa?

Pambuyo pa nthawi yolumikizirana ndi ulusi waukulu wa kuwala, ukadaulo wokulitsa kuwala wakula mofulumira.Zokulitsa mphamvu zamagetsikukulitsa zizindikiro zolowera kutengera kuwala kolimbikitsidwa kapena kufalikira kolimbikitsidwa. Malinga ndi mfundo yogwirira ntchito, ma amplifiers a kuwala amatha kugawidwa m'ma amplifiers a semiconductor optical (SOAndizokulitsa ulusi wa kuwala. Mwa iwo,ma amplifiers a semiconductor opticalamagwiritsidwa ntchito kwambiri polankhulana ndi kuwala chifukwa cha ubwino wa gulu lopeza mphamvu zambiri, kuphatikiza bwino komanso kutalika kwa mafunde. Amapangidwa ndi madera ogwirira ntchito komanso osagwira ntchito, ndipo chigawo chogwira ntchito ndi chigawo chopeza mphamvu. Chizindikiro cha kuwala chikadutsa m'dera logwira ntchito, chimapangitsa ma elekitironi kutaya mphamvu ndikubwerera kudziko lapansi mu mawonekedwe a ma photon, omwe ali ndi mafunde ofanana ndi chizindikiro cha kuwala, motero amakulitsa chizindikiro cha kuwala. Chothandizira kuwala cha semiconductor chimasintha chonyamulira cha semiconductor kukhala tinthu tobwerera m'mbuyo ndi mphamvu yoyendetsa, chimakulitsa kukula kwa kuwala kwa mbewu yolowetsedwa, ndikusunga mawonekedwe oyambira a kuwala kwa mbewu yolowetsedwa monga polarization, m'lifupi mwa mzere ndi pafupipafupi. Ndi kuwonjezeka kwa mphamvu yogwira ntchito, mphamvu yotulutsa imawonjezekanso muubwenzi wina wogwira ntchito.

Koma kukula kumeneku sikuli kopanda malire, chifukwa ma amplifiers a semiconductor optical ali ndi vuto la kuchuluka kwa mphamvu. Chochitikachi chikuwonetsa kuti mphamvu ya kuwala yolowera ikakhazikika, kuchuluka kumawonjezeka ndi kuchuluka kwa mphamvu yonyamula yomwe yalowetsedwa, koma kuchuluka kwa mphamvu yonyamula yomwe yalowetsedwa ikakula kwambiri, kuchuluka kumadzaza kapena kutsika. Pamene kuchuluka kwa mphamvu yonyamula yomwe yalowetsedwa kumakhala kokhazikika, mphamvu yotulutsa imawonjezeka ndi kuchuluka kwa mphamvu yolowetsa, koma pamene mphamvu yolowetsayo yakula kwambiri, kuchuluka kwa mphamvu yogwiritsira ntchito mphamvu yonyamula yomwe imayambitsidwa ndi kuwala kolimbikitsidwa kumakhala kwakukulu kwambiri, zomwe zimapangitsa kuti kuchuluka kwa mphamvu yogwira ntchito kukhale kwakukulu kwambiri. Chifukwa cha vuto la kuchuluka kwa mphamvu yogwira ntchito ndi kuyanjana pakati pa ma elekitironi ndi ma photon muzinthu zogwira ntchito. Kaya ma photon opangidwa mu gain medium kapena ma photon akunja, kuchuluka kwa mphamvu yogwira ntchito yogwiritsira ntchito mphamvu yogwira ntchito kumakhudzana ndi kuchuluka kwa mphamvu zomwe zonyamula zimadzaza mpaka kufika pamlingo woyenera munthawi yake. Kuphatikiza pa mphamvu yogwira ntchito, kuchuluka kwa mphamvu yogwira ntchito komwe kumadyedwa ndi zinthu zina kumasinthanso, zomwe zimakhudza kwambiri kuchuluka kwa mphamvu yogwira ntchito.

Popeza ntchito yofunika kwambiri ya ma amplifiers a semiconductor optical ndi kukulitsa mzere, makamaka kuti akwaniritse kukulitsa, ingagwiritsidwe ntchito ngati ma amplifiers amphamvu, ma amplifiers a mzere ndi ma preamplifiers m'makina olumikizirana. Kumapeto kwa transmitter, semiconductor optical amplifier imagwiritsidwa ntchito ngati amplifier yamphamvu kuti iwonjezere mphamvu yotulutsa kumapeto kwa transmitter ya system, zomwe zitha kuwonjezera kwambiri mtunda wolumikizirana wa trunk ya system. Mu mzere wotumizira, semiconductor optical amplifier ingagwiritsidwe ntchito ngati linear relay amplifier, kotero kuti mtunda wolumikizirana wobwezeretsanso ungathe kukulitsidwanso ndi kulumpha ndi malire. Kumapeto kwa receiver, semiconductor optical amplifier ingagwiritsidwe ntchito ngati preamplifier, zomwe zitha kusintha kwambiri kukhudzidwa kwa wolandila. Makhalidwe a gain saturation a semiconductor optical amplifiers adzapangitsa kuti gain per bit ikhale yogwirizana ndi bit sequence yapitayi. Zotsatira za pattern pakati pa ma channel ang'onoang'ono zitha kutchedwanso cross-gain modulation effect. Njirayi imagwiritsa ntchito avareji ya statistical ya cross-gain modulation effect pakati pa ma channel angapo ndikuyambitsa medium intensity continuous wave mu ndondomekoyi kuti isunge beam, motero imachepetsa gain yonse ya amplifier. Kenako cross-gain modulation effect pakati pa ma channel imachepetsedwa.

Ma amplifiers a semiconductor ali ndi kapangidwe kosavuta, kosavuta kuphatikiza, ndipo amatha kukulitsa zizindikiro za kuwala kwa mafunde osiyanasiyana, ndipo amagwiritsidwa ntchito kwambiri pophatikiza mitundu yosiyanasiyana ya ma laser. Pakadali pano, ukadaulo wophatikiza laser wozikidwa pa ma amplifiers a semiconductor ukupitirira kukula, koma kuyesetsa kukufunikabe kuchitika m'mbali zitatu zotsatirazi. Choyamba ndikuchepetsa kutayika kwa coupling ndi ulusi wowala. Vuto lalikulu la semiconductor optical amplifier ndikuti kutayika kwa coupling ndi ulusi ndi kwakukulu. Pofuna kukonza bwino coupling, lens ikhoza kuwonjezeredwa ku coupling system kuti ichepetse kutayika kwa reflection, kukonza symmetry ya beam, ndikukwaniritsa coupling yogwira ntchito bwino. Chachiwiri ndikuchepetsa kukhudzidwa kwa polarization kwa ma amplifiers a semiconductor optical. Khalidwe la polarization limatanthauza makamaka kukhudzidwa kwa polarization kwa kuwala kochitika. Ngati semiconductor optical amplifier sikonzedwa mwapadera, bandwidth yogwira ntchito ya gain idzachepetsedwa. Kapangidwe ka Quantum well kangawongolere bwino kukhazikika kwa ma amplifiers a semiconductor optical. N'zotheka kuphunzira kapangidwe ka quantum well kosavuta komanso kopambana kuti muchepetse kukhudzidwa kwa polarization kwa ma amplifiers a semiconductor optical. Chachitatu ndikukonza njira yolumikizidwa. Pakadali pano, kuphatikiza ma amplifiers ndi ma laser a semiconductor ndi kovuta kwambiri komanso kovuta pakugwiritsa ntchito ukadaulo, zomwe zimapangitsa kuti pakhale kutayika kwakukulu kwa kutumiza chizindikiro cha kuwala ndi kutayika kwa chipangizocho, ndipo mtengo wake ndi wokwera kwambiri. Chifukwa chake, tiyenera kuyesetsa kukonza kapangidwe ka zida zolumikizidwa ndikukonza kulondola kwa zida.

Mu ukadaulo wolumikizirana ndi kuwala, ukadaulo wokulitsa kuwala ndi umodzi mwa ukadaulo wothandizira, ndipo ukadaulo wokulitsa kuwala wa semiconductor ukukula mofulumira. Pakadali pano, magwiridwe antchito a ma amplifiers a semiconductor asintha kwambiri, makamaka pakupanga ukadaulo watsopano wa kuwala monga wavelength division multiplexing kapena optical switching modes. Ndi chitukuko cha makampani opanga chidziwitso, ukadaulo wokulitsa kuwala woyenera magulu osiyanasiyana ndi ntchito zosiyanasiyana udzayambitsidwa, ndipo chitukuko ndi kafukufuku wa ukadaulo watsopano mosakayikira zidzapangitsa ukadaulo wa semiconductor optical amplifier kupitiliza kukula ndikukula.