Cov100G CWDM4 moduletau raug xa mus rau hauv ntau lab nrog kev ua tiav thawj zaug. Nws 200G thiab 400G silicon modules kuj tseem xav tias yuav tsim khoom loj hauv ib nrab xyoo 2020.
CWDM4 module txais lub wavelength ntawm 1271,1291,1311,1331 nm thiab qhov ntev tshaj plaws kis tau tus mob mus txog 10km. Nws yog encapsulated los ntawm QSFP28 thiab muaj ob qhov ntsuas kub ntawm 0-70 degree thiab 15-55 degree .
CWDM4's TX thiab RX chips yog cais. TX yog tsim los ntawm 4 III-V / Si hybrid integrated lasers, 4 MZ optical modulators thiab modulator tsav chips, MUX thiab fiber ntau coupling ib feem raws li EDG technology. RX muaj 4 Ge/Si ntes, TIA, PLC raws li DEMUX, thiab fiber ntau coupling Cheebtsam. TX thiab RX moos thiab cov ntaub ntawv rov qab siv MACOM 4-channel 25G CDR nti. Lub redundant tail fiber ntawm TX thiab RX fiber array yog teem thiab kho los ntawm disk fiber.
1. TX light chip
TX Terminal ofCWDM4 module, lub laser, modulator thiab MUX yog kev koom ua ke ntawm tib lub nti. Lub laser txais kev sib txuas ncaj qha ntawm cov khoom siv III-V thiab Si waveguide los tsim cov lasers ntawm plaub lub wavelengths ntawm 1271,1291,1311,1331 nm, feem. Iii-v cov khoom yog lub luag haujlwm rau kev nce thiab Si waveguide yog lub luag haujlwm rau kev xaiv hom. Evasescent yoj txoj cai yog siv rau kev sib txuas ntawm ob. Silicon modulator yog 4-mZ modulator, thiab nws cov kev hloov pauv siab ceev tau txais ntau theem electrodes txuas nrog flip-chip bonding modulator los tsav, uas tuaj yeem txo qis ntawm cov teeb liab ceev. Ob txhais caj npab ntawm MZ modulator yog feem ntau nruab nrog ib theem modulator rau kev hloov tsis ncaj. Tsis tas li ntawd, qhov chaw nres nkoj tso zis ntawm lub modulator muaj ob txoj kev saib xyuas qhov muag pom, ib qho rau hom-qib TX saib xyuas thiab lwm yam rau MZ modulator debugging thiab saib xyuas. Lub teeb modulated los ntawm 4-txoj kev MZ modulator yog multiplexed los ntawm EDG thiab txuas mus rau cov fiber ntau optical los ntawm SSC thiab Lens.
2. RX lub teeb nti
RX kawgCWDM4 moduleyog tsim los ntawm PLC DEMUX, 4 Ge detectors thiab TIA. Qhov kawg ntawm DEMUX yog 45 degree reflective kawg uas deflects lub teeb los ntawm 90 degree thiab ua ke rau Ge detector.
