ʻO kahi hoʻolālā o ka hoʻoheheʻe pinepine ʻana ma muli o ka modulator MZM

ʻO kahi papahana o ka hoʻoheheʻe pinepine ʻana ma muli oMZM modulator

Hiki ke hoʻohana ʻia ka dispersion frequency optical ma ke ʻano he liDARkumu kukuie hoʻokuʻu a nānā i ka manawa like i nā ʻaoʻao like ʻole, a hiki ke hoʻohana ʻia e like me ke kumu kukui uila nui o 800G FR4, e hoʻopau ana i ke ʻano MUX. ʻO ka maʻamau, he haʻahaʻa haʻahaʻa a ʻaʻole hoʻi i hoʻopili maikaʻi ʻia ke kumu kukui lōʻihi-nui, a he nui nā pilikia. ʻO ka papahana i hoʻokomo ʻia i kēia lā he nui nā pono a hiki ke kuhikuhi ʻia no ka ʻike. Ua hōʻike ʻia kona kiʻina hana penei: ʻO ka mana kiʻekiʻeDFB laserʻO ke kumu māmā he kukui CW i ka domain manawa a me ka lōʻihi hawewe hoʻokahi i ke alapine. Ma hope o ka hele ʻana amea hoʻololime kekahi fRF modulation frequency, e hana ʻia ka ʻaoʻao ʻaoʻao, a ʻo ka wā ʻaoʻao ʻaoʻao ka fRF modulated frequency. Hoʻohana ka modulator i kahi modulator LNOI me ka lōʻihi o 8.2mm, e like me ka mea i hōʻike ʻia ma ke Kiʻi b. Ma hope o kahi ʻāpana lōʻihi o ka mana kiʻekiʻemea hoʻololi ʻāpana, ʻo ka fRF hoʻi ka hoʻololi ʻana, a pono i kāna ʻāpana e hana i ka crest a i ʻole ka pahu o ka hōʻailona RF a me ka pulse māmā e pili ana i kekahi i kekahi, e hopena i kahi kani nui, e hoʻonui ai i nā niho optical. Hiki i ka DC bias a me ka hohonu modulation o ka modulator ke hoʻopili i ka palahalaha o ka hoʻopuehu pinepine ʻana.

Ma ka makemakika, ʻo ka hōʻailona ma hope o ka hoʻololi ʻia ʻana o ka māla māmā e ka modulator:
Hiki ke ʻike ʻia ʻo ka puka ʻana o ka optical field he optical frequency dispersion me ka manawa pinepine o wrf, a ʻo ka ikaika o ka dispersion frequency optical e pili ana i ka mana optical DFB. Ma ka hoʻohālikelike ʻana i ka ikaika māmā e hele ana ma MZM modulator aPM phase modulator, a laila FFT, loaʻa ke alapine dispersion spectrum. Hōʻike kēia kiʻi i ka pilina pololei ma waena o ka optical frequency flatness a me ka modulator DC bias a me ka hohonu modulation e pili ana i kēia simulation.

Hōʻike ke kiʻi ma lalo nei i ke kiʻikuhi i hoʻohālikelike ʻia me ka MZM bias DC o 0.6π a me ka hohonu hoʻololi o 0.4π, e hōʻike ana he <5dB kona palahalaha.

ʻO kēia ka pakuhi o ka MZM modulator, ʻo LN he 500nm mānoanoa, ʻo ka hohonu etching he 260nm, a ʻo ka laulā hawewe he 1.5um. ʻO ka mānoanoa o ka electrode gula he 1.2um. ʻO 2um ka mānoanoa o ka SIO2 pale luna.

ʻO kēia ka kikoʻī o ka OFC i hoʻāʻo ʻia, me nā niho 13 optically sparse a me ka palahalaha <2.4dB. ʻO ke alapine modulation ʻo 5GHz, a ʻo ka hoʻouka ʻana o ka mana RF ma MZM a me PM he 11.24 dBm a me 24.96dBm. Hiki ke hoʻonui ʻia ka nui o nā niho o ka optical frequency dispersion excitation ma o ka hoʻonui hou ʻana i ka mana PM-RF, a hiki ke hoʻonui ʻia ka wā hoʻopuehu optical frequency ma ka hoʻonui ʻana i ke alapine modulation. kiʻi
Hoʻokumu ʻia ka mea i luna ma luna o ka papahana LNOI, a ua hoʻokumu ʻia kēia ma luna o ka papahana IIIV. Penei ke kiʻina hana: Hoʻohui ka chip i ka laser DBR, MZM modulator, PM phase modulator, SOA a me SSC. Hiki i kahi pahu hoʻokahi ke hoʻokō i ka hana kiʻekiʻe optical frequency thinning.

ʻO ka SMSR o ka laser DBR he 35dB, ʻo ka laulā laina ʻo 38MHz, a ʻo ka laulā hoʻokani ʻo 9nm.

Hoʻohana ʻia ka modulator MZM e hana i ka sideband me ka lōʻihi o 1mm a me ka bandwidth o 7GHz@3dB wale nō. Hoʻopili nui ʻia e ka impedance mismatch, nalowale optical a hiki i 20dB@-8B bias

ʻO 500µm ka lōʻihi o ka SOA, i hoʻohana ʻia e uku i ka nalowale o ka ʻokoʻa ʻokoʻa modulation, a ʻo ka bandwidth spectral ʻo 62nm@3dB@90mA. ʻO ka SSC i hoʻohui ʻia i ka hoʻopuka e hoʻomaikaʻi i ka hoʻopili ʻana i ka pono o ka chip (ʻo 5dB ka maikaʻi o ka hui ʻana). ʻO ka mana hoʻopuka hope ma kahi o −7dBm.

I mea e hana ai i ka dispersion frequency optical, ʻo ka RF modulation frequency i hoʻohana ʻia he 2.6GHz, ka mana he 24.7dBm, a ʻo ka Vpi o ka modulator phase he 5V. ʻO ke kiʻi ma lalo nei ka hopena photophobic spectrum me nā niho photophobic 17 @10dB a me SNSR ʻoi aʻe ma mua o 30dB.

Hoʻolālā ʻia ka papahana no ka hoʻouna ʻana i ka microwave 5G, a ʻo ke kiʻi ma lalo nei ka ʻāpana spectrum i ʻike ʻia e ka mea ʻike kukui, hiki ke hana i nā hōʻailona 26G ma 10 mau manawa o ka pinepine. ʻAʻole i ʻōlelo ʻia ma aneʻi.

I ka hōʻuluʻulu ʻana, ʻo ke alapine optical i hana ʻia e kēia ʻano he mau manawa paʻa paʻa, haʻahaʻa haʻahaʻa haʻahaʻa, mana kiʻekiʻe a me ka hoʻohui maʻalahi, akā aia kekahi mau pilikia. ʻO ka hōʻailona RF i hoʻouka ʻia ma ka PM e koi i ka mana nui, ʻoi aku ka nui o ka hoʻohana ʻana i ka mana, a ua kaupalena ʻia ke alapine e ka modulation rate, a hiki i 50GHz, e koi ana i kahi manawa lōʻihi o ka nalu nui (maʻamau> 10nm) i ka ʻōnaehana FR8. Hoʻohana palena ʻia, ʻaʻole lawa ka mana palahalaha.