Gahunda yo kugabanya frequency y'urumuri ishingiye kuri modulator ya MZM

Gahunda yo kugabanya frequency y'urumuri ishingiye kuModulator ya MZM

Uburyo bwo gukwirakwiza frequency y'urumuri bushobora gukoreshwa nka liDARisoko y'urumurigusohora no gushakisha icyarimwe mu byerekezo bitandukanye, kandi ishobora no gukoreshwa nk'urumuri rw'uburebure bwinshi rwa 800G FR4, bigakuraho imiterere ya MUX. Ubusanzwe, isoko y'urumuri rw'uburebure bwinshi iba ifite ingufu nke cyangwa idapakiye neza, kandi hari ibibazo byinshi. Gahunda yashyizweho uyu munsi ifite ibyiza byinshi kandi ishobora kwifashishwa mu kuyisuzuma. Imbonerahamwe y'imiterere yayo igaragara ku buryo bukurikira: Ingufu nyinshiLazeri ya DFBInkomoko y'urumuri ni urumuri rwa CW mu gihe n'umurambararo w'uburebure bumwe mu gihe. Nyuma yo kunyura murimodulatorhamwe n'umuvuduko runaka wa modulation fRF, sideband izakorwa, kandi interval ya sideband ni modulated frequency fRF. Modulator ikoresha modulator ya LNOI ifite uburebure bwa mm 8.2, nk'uko bigaragara ku Ishusho ya b. Nyuma y'igice kirekire cy'imbaraga nyinshimodulator y'icyiciro, frequency ya modulation nayo ni fRF, kandi phase yayo igomba gukora icyerekezo cyangwa through y'ikimenyetso cya RF n'urumuri rw'umuvuduko ugereranije, bigatuma habaho urusaku runini, bigatuma amenyo menshi y'urumuri agaragara. Ubujyakuzimu bwa DC bias n'ubujyakuzimu bwa modulation bya modulator bishobora kugira ingaruka ku buryo frequency ya optical itatanye igaragara.

Mu mibare, ikimenyetso nyuma y'aho urumuri ruhinduriwe na modulator ni:
Bigaragara ko umurima w'urumuri usohoka ari ugukwirakwira kw'amajwi y'urumuri ufite interval ya wrf, kandi ubukana bw'amenyo y'urumuri akwirakwira bufitanye isano n'imbaraga za DFB. Mu kwigana ubukana bw'urumuri runyura muri modulator ya MZM naModulator y'icyiciro cya PM, hanyuma FFT, haboneka spectrum ya optique frequency dispersion. Ishusho ikurikira igaragaza isano itaziguye iri hagati ya optique frequency flatness na modulator DC bias hamwe na modulation depth hashingiwe kuri iyi simulation.

Ishusho ikurikira igaragaza igishushanyo cya spectral cyakozwe mu buryo bwa simulated gifite MZM bias DC ya 0.6π n'ubujyakuzimu bwa modulation bwa 0.4π, bigaragaza ko ubugari bwacyo buri <5dB.

Ikurikira ni igishushanyo mbonera cy'ipaki ya modulator ya MZM, LN ifite ubugari bwa nanometero 500, ubujyakuzimu bwo gushushanya ni nanometero 260, naho ubugari bw'umurongo w'ingufu ni nanometero 1.5. Ubugari bwa electrode ya zahabu ni nanometero 1.2. Ubugari bwa SIO2 yo hejuru ni nanometero 2.

Ibi bikurikira ni imiterere ya OFC yageragejwe, ifite amenyo 13 adakomeye kandi afite ubugari bungana na <2.4dB. Ingano ya modulation ni 5GHz, kandi ingufu za RF zishyirwa muri MZM na PM ni 11.24 dBm na 24.96dBm uko bikurikirana. Umubare w'amenyo ya optical frequency dispersion excitation ushobora kwiyongera binyuze mu kongera imbaraga za PM-RF, kandi igihe cyo gukwirakwiza optical frequency gishobora kwiyongera binyuze mu kongera ingano ya modulation.
Ibi byavuzwe haruguru bishingiye kuri gahunda ya LNOI, naho ibi bikurikira bishingiye kuri gahunda ya IIIV. Imbonerahamwe y'imiterere ni iyi ikurikira: Iyi chip ihuza laser ya DBR, modulator ya MZM, modulator ya PM phase, SOA na SSC. Chip imwe ishobora gutuma frequency ya optique igabanuka cyane.

SMSR ya laser ya DBR ni 35dB, ubugari bw'umurongo ni 38MHz, naho urwego rwo gutunganya ni 9nm.

Modulator ya MZM ikoreshwa mu gukora uruhande rufite uburebure bwa mm 1 n'umurambararo wa 7GHz@3dB gusa. Igabanywa ahanini n'impinduka zitajyanye, igihombo cy'urumuri kugeza kuri 20dB@-8B bias.

Uburebure bwa SOA ni 500µm, bukoreshwa mu kwishyura igihombo cya modulation optical difference, naho bandwidth ya spectral ni 62nm@3dB@90mA. SSC integrated kuri output yongera ubushobozi bwo guhuza chip (ubuhanga bwo guhuza ni 5dB). Ingufu za nyuma zo gusohora ni −7dBm.

Kugira ngo habeho gukwirakwira kw'amajwi y'urumuri, frequency ya modulation ya RF ikoreshwa ni 2.6GHz, ingufu ni 24.7dBm, naho Vpi ya phase modulator ni 5V. Ishusho iri hepfo ni spectrum ya photophobic ikomokaho ifite amenyo 17 afotora @10dB na SNSR iri hejuru ya 30dB.

Iyi gahunda igenewe kohereza amakuru muri mikoroonde ya 5G, kandi ishusho ikurikira ni igice cya spectrum cyabonetse n'icyuma gipima urumuri, gishobora gutanga ibimenyetso bya 26G inshuro 10 z'umuvuduko. Ntabwo bivugwa hano.

Muri make, umurongo wa optique ukorwa n'ubu buryo ufite interval ihamye, urusaku rw'impagarara ruto, ingufu nyinshi no guhuza byoroshye, ariko hari n'ibibazo byinshi. Ikimenyetso cya RF kiri kuri PM gisaba ingufu nyinshi, ingufu nyinshi zikoreshwa, kandi interval ya frequency igengwa n'umuvuduko wa modulation, kugeza kuri 50GHz, bisaba interval nini y'uburebure (muri rusange >10nm) muri sisitemu ya FR8. Ikoreshwa rike, imbaraga ziracari zidahagije.