Moʻo Photodetector: Hoʻolauna i ka Photodetector Kaulike

Hoʻolauna iMea ʻike kiʻi kaulike(Mea ʻImi Kaulike Optoelectronic)
Hiki ke hoʻokaʻawale ʻia ka Photodetector Balance i ke ʻano hoʻopili fiber optic a me ke ʻano hoʻopili optical spatial e like me ke ʻano hoʻopili optical. I loko, aia ʻelua mau photodiodes i kūlike loa, kahi module circuit amplifier transimpedance haʻahaʻa haʻahaʻa, bandwidth kiʻekiʻe, a me kahi module mana walaʻau ultra-haʻahaʻa. Loaʻa iā ia nā ʻano o ka ratio hōʻole ʻano maʻamau kiʻekiʻe, walaʻau ultra-haʻahaʻa, a me ka bandwidth kiʻekiʻe, a hoʻohana nui ʻia ma ke kahua o ke kamaʻilio optical coherent. Ua lilo ia i wahi noiʻi no nā ʻoihana a me nā kulanui ma nā ʻāina like ʻole i nā makahiki i hala iho nei.
ʻO ke kumumanaʻo hana o ka mea ʻike kiʻi kaulike (Mea ʻImi Kaulike Optoelectronic)
Hoʻohana ka Balance Photodetector i ʻelua mau photodiode ma ke kūlana bias hoʻohuli e like me ka ʻāpana loaʻa kukui. Ke loaʻa kahi hōʻailona kukui, unuhi ʻia ke kahe photo i hana ʻia e ʻelua mau photodiode a hoʻopili ʻia i kahi amplifier transimpedance e hoʻololi i ka hōʻailona o kēia manawa i hōʻailona voltage no ka hoʻopuka ʻana. ʻO ka hoʻohana ʻana i ka hoʻolālā hoʻemi ponoʻī hiki ke kāohi pono i ka hōʻailona ʻano maʻamau i hoʻokomo ʻia e ke kukui oscillator kūloko a me ke au pouli, hoʻonui i ka hōʻailona ʻano ʻokoʻa, a i kekahi ʻano e hoʻomaikaʻi i ka hiki ke ʻike i nā hōʻailona kukui nāwaliwali.
Nā Pōmaikaʻi: ʻO ka lakio hōʻole ʻano maʻamau kiʻekiʻe, ka ʻike kiʻekiʻe, a me ka bandwidth ʻike kiʻekiʻe e hiki ke hoʻokō i nā hiʻohiʻona noi like ʻole.
Nā Pōʻino: Mana optical haʻahaʻa haʻahaʻa, kūpono wale no ka ʻike ʻana i ka mālamalama nāwaliwali, pono e hoʻomaikaʻi ʻia ka hoʻohui ʻana.

KII: Kiʻikuhi hana o ka mea ʻike kaulike
Nā palena hana o ke Balance Photodetector (OptoelectronicMea ʻIke Kaulike)
1. Pane ʻana
ʻO ke ʻano pane e pili ana i ka pono o kahi photodiode i ka hoʻololi ʻana i nā hōʻailona kukui i loko o ke au kiʻi, ʻo ia ka lakio o ke au kiʻi i ka mana kukui. ʻO ke koho ʻana i kahi photodiode me ka pane kiʻekiʻe aʻe hiki ke hoʻomaikaʻi maikaʻi i ka ʻike o ka Balance Photodetector.
ʻO ke ʻano pane e pili ana i ka pono o kahi photodiode i ka hoʻololi ʻana i nā hōʻailona kukui i loko o ke au kiʻi, ʻo ia ka lakio o ke au kiʻi i ka mana kukui. ʻO ke koho ʻana i kahi photodiode me ka pane kiʻekiʻe aʻe hiki ke hoʻomaikaʻi maikaʻi i ka ʻike o ka Balance Photodetector.
2. Pākuʻi
Hōʻike ka bandwidth i ke alapine hōʻailona kahi e emi ai ka amplitude hōʻailona hoʻopuka o ka Balance Photodetector e -3dB, a pili ia i ka capacitance parasitic o ka photodiode, ka nui o ka transimpedance, a me ka huahana bandwidth gain o ka amplifier operational.
3. Laki hōʻole ʻano maʻamau
Hoʻohana ʻia ka lakio hōʻole ʻano maʻamau e ana i ke kekelē o ka hoʻopau ʻana i nā hōʻailona ʻano maʻamau e nā mea ʻike kaulike, a ʻo nā huahana kalepa maʻamau e koi i ka liʻiliʻi loa o ka hōʻole ʻano maʻamau o 25dB.
4.NEP
Mana Kūlike o ka Walaʻau: ʻO ka mana hōʻailona hoʻokomo e pono ai ma ka lakio hōʻailona-i-ka-walaʻau o 1, he mea nui ia no ke ana ʻana i ka hana walaʻau o kahi ʻōnaehana. ʻO nā ʻāpana nui o ka walaʻau ʻike kaulike he walaʻau hoʻopuehu optical a me ka walaʻau uila.

Ka Hoʻohana ʻana o ka Photodetector Balance (Optoelectronic Balance Detector)
I nā makahiki i hala iho nei, ua hoʻohana nui ʻia ʻo Balance Photodetector ma nā kahua e like me ka radar makani laser, ke ana ʻana o ka haʻalulu laser, ka ʻike ʻana o ka fiber optic, ka ʻike ʻana i ke kukui palupalu, ka ʻike spectral, ka ʻike ʻana i ke kinoea, a me nā mea ʻē aʻe. ʻO ka noiʻi ʻana ma ka wikiwiki kiʻekiʻe, ka bandwidth kiʻekiʻe, ka walaʻau haʻahaʻa, ka lakio hōʻole ʻano maʻamau kiʻekiʻe, a me ke ʻano kiʻekiʻe o nā mea ʻike kaulike ua hana i nā holomua a ke ulu nei i ka hoʻohui kiʻekiʻe a me ka hoʻohana ʻana i ka mana haʻahaʻa e hoʻokō i nā hiʻohiʻona noi like ʻole.