Yakabatanakutaurirana kwemaziso: chikamu chechiedza
Kutaurirana kwakabatana hakungotsamiri pakuti chiedza chakajeka zvakadii, asiwo pane kuti chikamu chechiedza chiri kupi, uye kunotoshandisa mapolarization maviri e orthogonal. Nenzira iyi, ruzivo rwakawanda runogona kuiswa muwavelength imwe chete, uye daro rekutumirwa rinogonawo kuva kure.
1, Chitubu chechiedza chakabatana: laser ichiri kuramba ichienderera mberi, asi inoda kugadzikana kwakawanda
Chitubu chechiedza mukutaurirana kwakabatana chichiri CW continuous laser. Haisi pulsed laser kana LED, asi inobuda nguva dzose kubva kuchiedza chakagadzikana se carrier wave kuti iite modulation inotevera. Zvichienzaniswa neCWchiedza chinobvaMumamodule e optical enguva pfupi, zvinoda zvinodiwa zvakanyanya. Chinokosha hachisi chekuti simba rakakwana here, asiwo kuti frequency inofanira kunge yakagadzikana here uye ruzha rwe phase runofanira kunge rwakaderera here. Saka, masosi echiedza akabatana anogona kunzwisiswa se 'optical reference' yakagadzikana zvakanyanya. Ichiri laser inoenderera mberi, asi inoda kugadzikana kwakanyanya.
2, Kuchinja-chinja kwakabatana: Hazvina kufanana ne modulator yeEML
Maumbirwo eEML ndeekutiLaser yeDFB+EAM electroabsorbent modulator. EAM ine basa rekushandura simba rekunyudzwa kwemvura kuti chiedza chinobuda chive chakajeka kana kuti chakasviba. Saka, modulator muEML inonyanya kuita modulation yesimba. Coherent modulation yakasiyana. Inowanzo shandisamodulator yeIQ. IQ modulator haingoiti kuti chiedza chive chakajeka kana kuti chisvibe, asi inoparadzanisa chiedza chinoenderera mberi muI neQ paths, inodzora zvikamu zviviri zve orthogonal phase zvakaparadzana nemadhigirii makumi mapfumbamwe, uye yobva yagadzira output. Nenzira iyi, output light inogona kutakura ruzivo rwe amplitude ne phase panguva imwe chete.
3, Kubviswa kwesimba kwakabatana: kushandisa chiedza cheoscillator chemunharaunda kuverenga chikamu
PD yakajairika inogona kungoona kusimba kwechiedza chete uye haigone kuona chikamu zvakananga. Kuti uverenge chikamu ichi mu coherent reception, danda rekutarisa rinonzi LO, local oscillator laser, rinofanira kuiswa. Mugumo wekugamuchira unotumira chiedza chechiratidzo chinotumirwa uye chiedza che local oscillator mumusanganiswa we optical. Matanda maviri echiedza anopindira, uye mhedzisiro yekuvhiringidza ine chekuita nemusiyano wechikamu pakati pawo. Zvadaro, balanced detector inoshandura mhedzisiro iyi yekuvhiringidza kuita chiratidzo chemagetsi. Nechiedza che local oscillator, mugumo wekugamuchira unogona kuona kuti mwenje wechiratidzo uyu wakabviswa sei kana tichienzanisa nechiedza chekutarisa.
4. Nzvimbo muAIDC: Kureba kudiki kuchiri kutarisa IM-DD, DCI inonyanya kutarisa kubatana
Nzvimbo inonyanya kujeka yekutaurirana kwakabatana munzvimbo dzeruzivo rweAI iDCI, iyo inomiririra Data Center Interconnection. Kureva, kubatana nekukurumidza pakati penzvimbo dzeruzivo, mapaki, uye mukati memaguta.
Zvisinei, IM-DD ichiri nezvakanaka pamutengo uye simba mukubatanidza mapfupi mukati nepakati pemakabati. Mamodule e800G ne1.6T mapfupi e optical acharamba achishandisa nzira imwecheteyo neEML, silicon optics, PAM4, PD, uye TIA. Sisitimu iyi ine zvikamu zvakawanda, simba rinoshandiswa zvakanyanya, uye DSP inorema, uye haizotsivi mamodule e short-range optical pasina muripo.
Nguva yekutumira: Chikumi-12-2026