He aha ka electro-optic modulator optical frequency comb? Mahele ʻElua

02electro-optic modulatoraelectro-optic modulationpulupulu alapine optical

ʻO ka hopena electro-optical e pili ana i ka hopena i hoʻololi ʻia ka index refractive o kahi mea ke hoʻohana ʻia kahi kahua uila. ʻElua ʻano nui o ka hopena electro-optical, hoʻokahi ka hopena electro-optical mua, ʻike ʻia ʻo ka hopena Pokels, e pili ana i ka hoʻololi linear o ka mea kuhikuhi refractive me ke kahua uila i noi ʻia. ʻO ka mea ʻē aʻe ka hopena electro-optical lua, i ʻike ʻia ʻo ka hopena Kerr, kahi i kūlike ai ka hoʻololi ʻana i ka index refractive o ka mea i ka huinahā o ke kahua uila. Hoʻokumu ʻia ka hapa nui o nā modulator electro-optical i ka hopena Pokels. Ke hoʻohana nei i ka modulator electro-optic, hiki iā mākou ke hoʻololi i ke ʻano o ke kukui hanana, a ma ke kumu o ka modulation phase, ma o kekahi hoʻololi ʻana, hiki iā mākou ke hoʻololi i ka ikaika a i ʻole polarization o ke kukui.

Aia kekahi mau hale kahiko like ʻole, e like me ka mea i hōʻike ʻia ma ke Kiʻi 2. (a), (b) a me (c) nā hale modulator hoʻokahi me ke ʻano maʻalahi, akā ua kaupalena ʻia ka laulā laina o ka mea hoʻohui i hoʻokumu ʻia e ka electro-optical. bandwidth. Inā makemake ʻia kahi hui alapine optical me ke alapine repetition kiʻekiʻe, pono ʻelua a ʻoi aku nā modulators i ka cascade, e like me ka hōʻike ʻana ma ke Kiʻi 2(d)(e). ʻO ke ʻano hope loa o ka hale e hoʻohua ai i kahi hui alapine optical i kapa ʻia he electro-optical resonator, ʻo ia ka electro-optical modulator i hoʻokomo ʻia i loko o ka resonator, a i ʻole hiki i ka resonator ke hana i kahi hopena electro-optical, e like me ka hōʻike ʻana ma ke Kiʻi 3.

FIG. 2 He mau mea hoʻokolohua no ka hana ʻana i nā huila alapine optical ma muli oelectro-optic modulators

FIG. 3 Nā hale o nā lua electro-optical
03 Electro-optic modulation optical frequency comb hiʻohiʻona

Pōmaikaʻi hoʻokahi: tunability

No ka mea ʻo ke kumu kukui he laser ākea ākea ākea, a ʻo ka modulator electro-optical pū kekahi i kekahi bandwidth hana pinepine, ʻo ka electro-optical modulation optical frequency comb ka mea hiki ke hoʻokō. Ma waho aʻe o ke alapine hiki ke hoʻokō ʻia, no ka mea hiki ke hoʻokō ʻia ka hana nalu o ka modulator, hiki ke hoʻokō ʻia ke alapine repetition o ka hopena optical freque combi. He mea maikaʻi kēia i loaʻa ʻole i nā huila alapine optical i hana ʻia e nā lasers paʻa ʻia a me nā micro-resonators.

Pōmaikaʻi ʻelua: ka hana pinepine ʻana

ʻAʻole hiki ke hoʻololi wale ʻia ka helu repetition, akā hiki ke hoʻokō ʻia me ka ʻole o ka hoʻololi ʻana i nā mea hoʻokolohua. ʻO ka laulā laina o ka electro-optic modulation optical frequency comb he mea like ia me ka bandwidth modulation, ʻo ka bandwidth modulator electro-optic pāʻoihana maʻamau he 40GHz, a ʻo ka electro-optic modulation optical frequency comb repetition frequency hiki ke ʻoi aku ma mua o ka optical frequency comb bandwidth i hana ʻia. ma nā ʻano hana ʻē aʻe a pau koe ka micro resonator (hiki ke hiki i 100GHz).

ʻO ka pōmaikaʻi 3: ka hoʻohālike spectral

Ke hoʻohālikelike ʻia me ka ʻili optical i hana ʻia e nā ʻano ʻē aʻe, ua hoʻoholo ʻia ke ʻano o ka disc optical o ka electro-optic modulated optical comb e kekahi mau degere o ke kūʻokoʻa, e like me ka hōʻailona radio frequency, bias voltage, incident polarization, etc. hoʻohana ʻia e hoʻomalu i ka ikaika o nā hui like ʻole e hoʻokō i ke kumu o ke ʻano spectral.

04 Hoʻohana i ka electro-optic modulator optical frequency comb

I ka hoʻohana pono ʻana o ka electro-optic modulator optical frequency comb, hiki ke hoʻokaʻawale ʻia i hoʻokahi a me ka lua comb spectra. He haiki loa ke kaawale o ka laina o ka spectrum hoʻokahi, no laila hiki ke loaʻa ka pololei kiʻekiʻe. I ka manawa like, i hoʻohālikelike ʻia me ka huila alapine optical i hana ʻia e ka laser paʻa mode, ʻoi aku ka liʻiliʻi o ka mīkini o ka electro-optic modulator optical frequency comb a ʻoi aku ka maikaʻi. Hoʻopuka ʻia ka spectrometer hui lua ma muli o ke keakea ʻana o ʻelua hui pū hoʻokahi me nā alapine hoʻopiʻi ʻokoʻa iki, a ʻo ka ʻokoʻa o ka hana pinepine ʻana ʻo ia ke kaawale o ka laina o ka spectrum hui hou. Hiki ke hoʻohana ʻia ka ʻenehana hoʻohui i ka optical imaging, ranging, ana mānoanoa, calibration mea kani, hoʻoheheʻe ʻia ʻana o nā ʻano hawewe like ʻole, radio frequency photonics, kamaʻilio mamao, optical stealth a pēlā aku.

FIG. 4 Ka hoʻohana ʻana i ka hoʻohana ʻana o ka puʻupuʻu alapine optical: E lawe ana i ke ana ʻana o ka ʻaoʻao pōkā kiʻekiʻe ma ke ʻano he laʻana.