Umuyoboro wa modulator wa MZM upima cyane kandi upima imiterere y'ibintu (Bias Controller)
Ikiranga
• Kugenzura amashanyarazi ya Bias kuri Peak/Null/Q+/Q−
• Kugenzura amashanyarazi ashingiye ku ruhande runaka ku ngingo isanzwe
• Igenzura ryimbitse cyane: 50dB maximum extinction ratio kuri Null mode;
Uburinganire bwa ± 0.5◦ kuri Q+ na Q− modes
• Ubushobozi buke bwo gupima umuvuduko w'amazi:
0.1% Vπ kuri NULL mode na PEAK mode
2% Vπ kuri Q+ mode na Q− mode
• Ituze ryinshi: hamwe n'ishyirwa mu bikorwa ryuzuye ry'ikoranabuhanga
• Ubuso buke: 40mm (Ub) × 30mm (Ub) × 10mm (Ub)
• Byoroshye gukoresha: Gukoresha intoki ukoresheje mini jumper;
Ibikorwa byoroshye bya OEM binyuze muri MCU UART2
• Uburyo bubiri butandukanye bwo gutanga ingufu z'amashanyarazi: a. Kugenzura byihuse uburyo bworoshye
b. Umuvuduko w'ingufu ugenwa n'umukoresha
Porogaramu
• LiNbO3 n'izindi modulators za MZ
• NRZ y'ikoranabuhanga, RZ
• Porogaramu zo gukanda (pulse)
• Sisitemu yo gukwirakwiza Brillouin n'izindi sensor z'urumuri
• Umuyoboro wa CATV
Imikorere
Ishusho ya 1. Guhagarika umuyoboro w'imodoka
Ishusho ya 2. Gukora imitsi
Ishusho ya 3. Ingufu ntarengwa za modulator
Ishusho ya 4. Ingufu nke za modulator
Igipimo cy'irimbuka rya Maxim DC
Muri ubu bushakashatsi, nta bimenyetso bya RF byakoreshejwe kuri sisitemu. Pure DC extinciton yarapimwe.
1. Ishusho ya 5 igaragaza imbaraga z'urumuri rw'amashanyarazi (optical power) z'umusaruro wa modulator, iyo modulator igenzurwa kuri Peak point. Igaragaza 3.71dBm ku gishushanyo.
2. Ishusho ya 6 igaragaza imbaraga z'urumuri rw'umusaruro wa modulator, iyo modulator igenzurwa kuri Null point. Igaragaza -46.73dBm muri igishushanyo. Mu igerageza nyaryo, agaciro karatandukanye hafi -47dBm; naho -46.73 ni agaciro gahamye.
3. Kubera iyo mpamvu, igipimo cy’ibura ry’ingufu za DC gipimwa ni 50.4dB.
Ibisabwa kugira ngo habeho igipimo cyo kubura kw'ibinyabuzima byinshi
1. Umuhuza w’imikorere ugomba kugira igipimo cyo kuzimira kinini. Ikiranga umuhuza w’imikorere ni cyo gigena igipimo ntarengwa cyo kuzimira gishobora kugerwaho.
2. Gushyira urumuri rw’ingufu mu buryo bwa polarization bigomba kwitabwaho. Utumashini dukoresha polarization dushobora kwagura ikigereranyo cyo kuzimira hejuru ya 10dB. Mu igerageza rya laboratwari, ubusanzwe hakenewe igikoresho gipima polarization.
3. Abagenzura uburyo bwo gutandukanya ibintu neza. Mu igerageza ryacu rya DC extinction ratio, 50.4dB extinction ratio yagezweho. Mu gihe urupapuro rw'amakuru rw'abakora modulator rugaragaza gusa 40dB. Impamvu y'iri terambere ni uko zimwe muri modulator zigenda vuba cyane. Abagenzura uburyo bwo gutandukanya ibintu bya Rofea R-BC-ANY bavugurura voltage ya bias buri segonda rimwe kugira ngo bihutishe uburyo bwo gusubiza.
Ibisobanuro
| Igipimo | Iminota | Ubwoko | Umubare munini | Ishami | Ibisabwa |
| Imikorere yo Kugenzura | |||||
| Igipimo cy'irimbuka | MER 1 | 50 | dB | ||
| CSO2 | −55 | -65 | −70 | dBc | Ubwinshi bwa Dither: 2% Vπ |
| Igihe cyo gutuza | 4 | s | Aho gukurikirana: Null & Peak | ||
| 10 | Aho gukurikirana: Ibibazo+ na Ibibazo- | ||||
| Amashanyarazi | |||||
| Ingufu z'amashanyarazi nziza | +14.5 | +15 | +15.5 | V | |
| Umuriro w'ingufu nziza | 20 | 30 | mA | ||
| Ingufu z'amashanyarazi mbi | -15.5 | -15 | -14.5 | V | |
| Umuriro w'ingufu mbi | 2 | 4 | mA | ||
| Urugendo rw'amashanyarazi asohoka | -9.57 | +9.85 | V | ||
| Ubuziranenge bw'ingufu zisohoka | 346 | µV | |||
| Inshuro zo guterura | 999.95 | 1000 | 1000.05 | Hz | Verisiyo: Ikimenyetso cya dither cya 1kHz |
| Ubwinshi bwa Dither | 0.1% Vπ | V | Aho gukurikirana: Null & Peak | ||
| 2% Vπ | Aho gukurikirana: Ibibazo+ na Ibibazo- | ||||
| Ikoranabuhanga | |||||
| Ingufu z'amashanyarazi zo kwinjira3 | -30 | -5 | dBm | ||
| Ubuso bw'umurambararo bw'urumuri | 780 | 2000 | nm | ||
1. MER yerekeza ku gipimo cyo kuzimira kwa Modulator. Igipimo cyo kuzimira cyagezweho ubusanzwe ni igipimo cyo kuzimira kwa modulator kivugwa mu rupapuro rw'amakuru rwa modulator.
2. CSO yerekeza ku cyiciro cya kabiri cy’umuvuduko. Kugira ngo CSO ipime neza, ubwiza bw’ikimenyetso cya RF, modulators na receiver bugomba kwemezwa. Byongeye kandi, imiterere ya CSO ya sisitemu ishobora gutandukana iyo ikora ku mivuduko itandukanye ya RF.
3. Menya neza ko imbaraga z'urumuri zinjira zidahuye n'imbaraga z'urumuri ku gice cyatoranijwe cya bias. Bivuga imbaraga ntarengwa z'urumuri modulator ishobora kohereza kuri controller iyo voltage ya bias iri hagati ya −Vπ na +Vπ.
Ihuza ry'Umukoresha
Ishusho ya 5. Iteraniro
| Itsinda | Igikorwa | Ibisobanuro |
| Fotodiode 1 | PD: Huza Cathode ya MZM photodiode | Tanga ibitekerezo kuri foto igezweho |
| GND: Huza Anode ya MZM photodiode | ||
| Ingufu | Isoko y'ingufu zo kugenzura imiterere y'ibintu | V-: ihuza electrode ya negative |
| V+: ihuza electrode nziza | ||
| Isuzuma ryo hagati: rihuza electrode yo hasi | ||
| Gusubizaho | Shyiramo jumper hanyuma uyikuremo nyuma y'isegonda 1 | Subiza igikoresho gikoresha ikoranabuhanga |
| Guhitamo Uburyo | Shyiramo cyangwa ukuremo jumper | nta gusimbuka: Uburyo bworoshye; hamwe na gusimbuka: Uburyo bwa kane |
| Polar Select2 | Shyiramo cyangwa ukuremo jumper | nta jumper: Polar nziza; hamwe na jumper: Polar mbi |
| Umuvuduko ushingiye ku bias | Huza na port ya voltage ya MZM bias | OUT na GND bitanga voltages za bias kuri modulator |
| LED | Buri gihe kuri | Gukorera mu gihe gihamye |
| Kurazima cyangwa kuzimya buri minota 0.2 | Gutunganya amakuru no gushakisha aho kugenzura ibintu | |
| Irafunguka cyangwa irafunguka buri sekondi imwe | Ingufu z'urumuri zo kwinjira ni nke cyane | |
| Irafunguka cyangwa irafunguka buri minota 3 | Ingufu z'urumuri zo kwinjira zirakomeye cyane | |
| UART | Koresha umugenzuzi ukoresheje UART | 3.3: Voltage y'ikigereranyo cya 3.3V |
| GND: Ubutaka | ||
| RX: Kwakira umugenzuzi | ||
| TX: Kohereza umugenzuzi | ||
| Guhitamo mu buryo bwo kugenzura | Shyiramo cyangwa ukuremo jumper | nta jumper: kugenzura jumper; hamwe na jumper: kugenzura UART |
1. Hari modulators za MZ zifite photodiode z'imbere. Gushyiraho controller bigomba guhitamo hagati yo gukoresha photodiode y'umugenzuzi cyangwa gukoresha photodiode y'imbere ya modulators. Ni byiza gukoresha photodiode y'umugenzuzi mu igerageza rya laboratwari kubera impamvu ebyiri. Ubwa mbere, photodiode y'umugenzuzi yemeje ko ari nziza. Icya kabiri, biroroshye guhindura uburyo urumuri rwinjizwa. Icyitonderwa: Niba ukoresha photodiode y'imbere ya modulators, nyamuneka menya neza ko umuvuduko w'umusaruro wa photodiode ujyanye neza n'imbaraga zinjiye.
2. Polar pin ikoreshwa mu guhindura aho umurongo ugenzura hagati ya Peak na Null muri Null control mode (igenwa na Mode Select pin) cyangwa Quad+
na Quad- in Quad control mode. Iyo jumper ya polar pin idashyizwemo, aho igenzura rizaba Null muri Null mode cyangwa Quad+ muri Quad mode. Amplitude ya sisitemu ya RF nayo igira ingaruka kuri aho igenzura riherereye. Iyo nta kimenyetso cya RF cyangwa amplitude ya RF signal ari nto, controller irashobora gufunga aho ikorera kugira ngo igorore ingingo nkuko byatoranijwe na MS na PLR jumper. Iyo amplitude ya RF signal irenze urugero runaka, polar ya sisitemu izahinduka, muri iki gihe, umutwe wa PLR ugomba kuba uri mu buryo bunyuranye, ni ukuvuga jumper igomba gushyirwamo niba idashyizwemo cyangwa igakurwamo niba ishyizwemo.
Uburyo busanzwe bwo gukoresha
Umugenzuzi woroshye gukoresha.
Intambwe ya 1. Huza 1% by'aho kompanyi ihurira na photodiode y'icyuma gipima.
Intambwe ya 2. Huza ingufu z'amashanyarazi zikomoka kuri icyuma gipima (bia voltage output) (unyuze kuri SMA cyangwa umutwe wa 2.54mm ufite pin 2) ku gice cya modulator.
Intambwe ya 3. Shyira umugenzuzi ufite voltage ya +15V na -15V DC.
Intambwe ya 4. Subiza icyuma gikoresha ikoranabuhanga (controller) maze kizatangira gukora.
ICYITONDERWA. Nyamuneka menya neza ko ikimenyetso cya RF cya sisitemu yose cyafunguye mbere yo kongera gushyiraho umugenzuzi.
Rofea Optoelectronics itanga umurongo w'ibicuruzwa bya modulators za Electro-optic, Phase modulators, Intensity modulator, Photodetectors, Laser sources, DFB lasers, Optical amplifiers, EDFA, SLD laser, QPSK modulation, Pulse laser, Light detector, Balanced photodetector, Laser driver, Fiber optic amplifier, Optical power meter, Broadband laser, Tunable laser, Optical detector, Laser diode driver, Fiber amplifier. Dutanga kandi modulators nyinshi zihariye zo guhindura, nka 1 * 4 array phase modulators, ultra-low Vpi, na ultra-high extinction ratio modulators, zikoreshwa cyane cyane muri za kaminuza n'ibigo.
Nizeye ko ibicuruzwa byacu bizagufasha no gukora ubushakashatsi bwawe.
