I-Silicon Optical Modulator ye-FMCW

I-Silicon Optical ModulatorNge-FMCW

Njengoba sonke sazi, enye yezinto ezibaluleke kakhulu ku-FMCW-based Lidwar Systems iyindlela ephezulu yokulinganisa i-modulator. Umgomo wayo wokusebenza ukhonjiswa kulokho okulandelayo: UsebenzisaI-DP-IQ Modulator-akhiweUkuguqulwa kwe-Sideband Sideband (SSB), phezulu nangaphansiI-MzmSebenza nge-null point, emgwaqweni naphansi kwebhendi eliseceleni le-WC + WM ne-WC-WM, isikhathi esifanayo sethula umehluko wesigaba sama-90, futhi ekugcineni ukukhanya kwe-WC-WM kukhanseliwe, isikhathi sokufudumalo se-WC + Wm. Kumfanekiso B, i-LR Blue yi-FM Chirp Signal, i-RX OLDER yisiginali ebonisiwe, futhi ngenxa yomphumela we-doppler, isiginali yokugcina yokushaya ikhiqiza i-F1 ne-F2.

Ibanga nejubane yile:

Okulandelayo isihloko esishicilelwe nguShanghai Jiatong University ngo-2021, mayelanaI-SSBAma-Generator asebenzisa i-FMCW ngokususelwaAma-modulators akhanyayo we-silicon.

Ukusebenza kwe-MZM kukhonjiswa kanjena: Umehluko wokusebenza we-Upper and aphansi ye-ARM Moswatulators ayikhulu. Isilinganiso sokwenqatshwa kwesenqabe se-Carriers sihlukile ngesilinganiso sokushintshashintsha imvamisa, futhi umphumela uzoba mubi njengoba imvamisa yenyuka.

Kulesi sibalo esilandelayo, imiphumela yokuhlolwa kohlelo lwe-lidar ikhombisa ukuthi i-A / B yisinambiso sokushaya ngejubane elifanayo nakumabanga ahlukene, futhi i-C / D yisiginali yokushaya ebangeni elifanayo nangejubane elihlukile. Imiphumela yokuhlola ifinyelele ku-15mm kanye no-0.775m / s.

Lapha, ukusetshenziswa kuphela kwe-siliconmodulator we-opticalKu-FMCW kuxoxwa ngakho. Eqinisweni, umphumela we-silicon optical modulator awumuhle njengalesoI-Lino3 Modulator, ikakhulukazi ngoba eSilicon Optical Modulator, Isigaba Sokushintshwa / Ukutholwa kwe-Comficance / I-Capection coufficance akuyona i-Un-Linear ngokushintshwa kwamandla kagesi, njengoba kukhonjisiwe kwisibalo esingezansi:

Leyo,

Ubudlelwane bamandla bokukhipha leimbebulauhlelo lunje
Umphumela uba yi-oda eliphakeme elivelayo:

Lokhu kuzodala ukukhiqizwa kwesibonakaliso semvamisa yokushaya kanye nokuncipha kwesilinganiso se-sinali-to-umsindo. Ngakho-ke yini indlela yokuthuthukisa umehluko we-Silicon Light Modulator? Lapha sidingida kuphela izici zedivayisi uqobo, futhi ungaxoxi ngesikimu sesinxephezelo usebenzisa ezinye izakhiwo ezisizayo.
Enye yezizathu zokungalingani kwesigaba sokuguqulwa nge-voltage ukuthi insimu ekhanyayo ku-waveguide isemandleni ahlukene amapharamitha anzima futhi akhanyayo futhi izinga lokushintsha kwesigaba lihlukile ngokushintsha kwamandla kagesi. Njengoba kukhonjisiwe esithombeni esilandelayo. Isifunda esidayisayo esinokuphazanyiswa okunamandla kushintsha okungaphansi kwalokho okuphazanyiswa ukukhanya.

Lesi sibalo esilandelayo sibonisa amajika okushintsha kokuhlanekezela kokuhlangana kwe-oda lesithathu kanye nokuhlanekezela kwesibili kwe-harmonic Harmonic nge-shd ngokuhlushwa kwe-clutter, okungukuthi, imvamisa yokumodanyuka. Kungabonakala ukuthi amandla okuvinjelwa kokunye okubandayo kwemfucumfucu esindayo iphakeme kunaleyo yokugcwala okukhanyayo. Ngakho-ke, ukulungiswa kusiza ukuthuthukisa ukuqondisisa.

Lokhu okungenhla kufana nokucabanga kwe-C kumodeli ye-RC ye-MZM, nethonya lika-R kufanele libhekwe futhi. Okulandelayo ijika lokushintsha le-CDR3 ngokumelana kochungechunge. Kungabonakala ukuthi incane ukumelana kochungechunge, kukhulu i-CDR3.

Okokugcina kodwa, umphumela we-silicon modulator akukubi kakhulu kunalokho kweLinbo3. Njengoba kukhonjisiwe kwisibalo esingezansi, i-CDR3 yeI-Silicon Modulatorizoba ngaphezulu kunaleyo ye-linbo3 esimweni sokukhetha okugcwele ngokwakha okunengqondo kwesakhiwo nobude besimondi. Izimo zokuhlola zihlala zingaguquguquki.

Ngamafuphi, ukwakhiwa kwesakhiwo se-Silicon Light Modulator kungancishiswa kuphela, kungabikwe, nokuthi kungasetshenziswa ngempela kuhlelo lwe-FMCW kudinga ukuqinisekiswa kokuhlola, uma kungafinyelela ukuhlanganiswa kwe-transceiver, okunezinzuzo zokuncishiswa kwezindleko ezinkulu.