Chowongolera Chosankha Chosankha Chosankha Chosankha Chosankha Chokha
Mbali
• Amapereka njira zitatu zokondera za ma modulators a IQ. Kapangidwe ka modulation kodziyimira pawokha:
•QPSK, QAM, OFDM, SSB yatsimikiziridwa
• Pulagi ndi Kusewera:
Palibe chifukwa chowerengera pamanja. Chilichonse chimachitika chokha.
•I, Q arms: controll pa Peak ndi Null modes Chiŵerengero chachikulu cha kutha kwa madzi: 50dB max1
•P arm: controll pa Q+ ndi Q- modes Kulondola: ± 2◦
•Mawonekedwe otsika: 40mm(W) × 28mm(D) × 8mm(H)
•Kukhazikika kwambiri: kugwiritsa ntchito digito kwathunthu. Zosavuta kugwiritsa ntchito:
•Kugwira ntchito ndi manja pogwiritsa ntchito mini jumper. Kugwira ntchito ndi OEM yosinthasintha kudzera mu UART2.
•Ma mode awiri operekera ma voltage a bias: a. Automatic Bias Control b. User defined bias voltage
Kugwiritsa ntchito
•LiNbO3 ndi ma IQmodulators ena
•QPSK, QAM, OFDM, SSB ndi zina zotero
• Kutumiza Kogwirizana
Magwiridwe antchito
Chithunzi 1. Gulu la nyenyezi (lopanda chowongolera)
Chithunzi 2. Gulu la QPSK (lokhala ndi chowongolera)
Chithunzi 3. Kapangidwe ka QPSK-Diso
Chithunzi 5. Kapangidwe ka gulu la nyenyezi la 16-QAM
Chithunzi 4. QPSK Spectrum
Chithunzi 6. 16-QAM Spectrum
Mafotokozedwe
| Chizindikiro | Ochepera | Mtundu | Max | Chigawo |
| Kuwongolera Magwiridwe Antchito | ||||
| Manja a I, Q amayang'aniridwa paChilibe kanthu (Chocheperako) kapenaChimake (Chokwanira) mfundo | ||||
| Chiŵerengero cha kutha | MER1 | 50 | dB | |
| Mkono wa P umayendetsedwa paQ+ (kumanja) quadrature) kapenaQ-( kumanzere quadrature) mfundo | ||||
| Kulondola pa Quad | −2 | +2 | digiri2 | |
| Nthawi yokhazikika | 15 | 20 | 25 | s |
| Zamagetsi | ||||
| Mphamvu yamagetsi yabwino | +14.5 | +15 | +15.5 | V |
| Mphamvu yamphamvu yabwino | 20 | 30 | mA | |
| Mphamvu yamagetsi yoyipa | -15.5 | -15 | -14.5 | V |
| Mphamvu yoipa yamagetsi | 8 | 15 | mA | |
| Mphamvu yotulutsa mphamvu | -14.5 | +14.5 | V | |
| Kukula kwa Dither | 1%Vπ | V | ||
| Kuwala | ||||
| Lowetsani mphamvu ya kuwala3 | -30 | -8 | dBm | |
| Kulowetsa kutalika kwa mtunda | 1100 | 1650 | nm | |
1. MER imatanthauza Chiŵerengero cha Kutha kwa Modulator. Chiŵerengero cha kutha kwa zinthu chomwe chimapezedwa nthawi zambiri chimakhala chiŵerengero cha kutha kwa modulator chomwe chafotokozedwa mu datasheet ya modulator.
2. Dziwani kuti mphamvu yolowera ya kuwala sikugwirizana ndi mphamvu yowunikira pamalo osankhidwa a bias. Imatanthauza mphamvu yayikulu yowunikira yomwe modulator ingatumize kwa wowongolera pamene bias voltage ikuchokera pa −Vπ mpaka +Vπ.
Chiyankhulo cha Ogwiritsa Ntchito
Chithunzi 5. Kusonkhanitsa
| Gulu | Ntchito | Kufotokozera |
| Bwezeretsaninso | Ikani jumper ndikuyitulutsa patatha sekondi imodzi | Bwezeretsani chowongolera |
| Mphamvu | Gwero la mphamvu la chowongolera cha bias | V- imagwirizanitsa ma electrode oipa a magetsi |
| V+ imalumikiza ma electrode abwino a magetsi | ||
| Khomo lapakati limalumikizana ndi elekitirodi yapansi | ||
| Polar1 | PLRI: Ikani kapena tulutsani jumper | palibe jumper: Njira yopanda pake; yokhala ndi jumper: Njira ya Peak |
| PLRQ: Ikani kapena tulutsani jumper | palibe jumper: Njira yopanda pake; yokhala ndi jumper: Njira ya Peak | |
| PLRP: Ikani kapena tulutsani jumper | palibe jumper: Q+ mode; ndi jumper: Q- mode | |
| LED | Nthawi zonse imayatsidwa | Kugwira ntchito pansi pa bata |
| Kuzimitsa kapena kuzimitsa masekondi 0.2 aliwonse | Kukonza deta ndi kusaka malo owongolera | |
| Kuzimitsa kapena kuzimitsa nthawi iliyonse 1s | Mphamvu yolowera kuwala ndi yofooka kwambiri | |
| Kuzimitsa kapena kuzimitsa nthawi iliyonse ya masekondi atatu | Mphamvu yolowera kuwala ndi yamphamvu kwambiri | |
| PD2 | Lumikizanani ndi photodiode | Doko la PD limalumikiza Cathode ya Photodiode |
| Doko la GND limalumikiza Anode ya photodiode | ||
| Ma Voltage Olakwika | Mu, Ip: Voltage yolakwika ya mkono wa I | Ip: Mbali yabwino; Mu: Mbali yoipa kapena pansi |
| Qn, Qp: Voltage yolakwika ya mkono wa Q | Qp: Mbali yabwino; Qn: Mbali yoipa kapena nthaka yoipa | |
| Pn, Pp: Voltage yolakwika ya mkono wa P | Pp: Mbali yabwino; Pn: Mbali yoipa kapena nthaka | |
| UART | Gwiritsani ntchito chowongolera kudzera mu UART | 3.3: voteji yoyerekeza ya 3.3V |
| GND: Pansi | ||
| RX: Kulandira kwa wolamulira | ||
| TX: Kutumiza kwa chowongolera |
1 Polar imadalira chizindikiro cha RF cha dongosolo. Ngati palibe chizindikiro cha RF mu dongosolo, polar iyenera kukhala yabwino. Chizindikiro cha RF chikakhala ndi amplitude yoposa mulingo winawake, polar idzasintha kuchoka pa zabwino kupita pa zoipa. Panthawiyi, Null point ndi Peak point zidzasinthana. Q+ point ndi Q- point zidzasinthananso. Polar switch imalola wogwiritsa ntchito kusintha polar
mwachindunji popanda kusintha malo ogwirira ntchito.
2Chisankho chimodzi chokha chidzasankhidwa pakati pa kugwiritsa ntchito photodiode yowongolera kapena kugwiritsa ntchito photodiode yowongolera. Ndikofunikira kugwiritsa ntchito photodiode yowongolera pakuyesera kwa Lab pazifukwa ziwiri. Choyamba, photodiode yowongolera yatsimikizira ubwino wake. Kachiwiri, ndikosavuta kusintha mphamvu ya kuwala kolowera. Ngati mukugwiritsa ntchito photodiode yamkati ya modulator, chonde onetsetsani kuti mphamvu yotulutsa ya photodiode ikugwirizana ndi mphamvu yolowera.
Rofea Optoelectronics imapereka mzere wazinthu zama modulators amalonda a Electro-optic, Phase modulators, Intensity modulator, Photodetectors, Laser light 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. Timaperekanso ma modulators ambiri apadera kuti tisinthe, monga 1*4 array phase modulators, ultra-low Vpi, ndi ultra-high extinction ratio modulators, makamaka omwe amagwiritsidwa ntchito m'mayunivesite ndi m'masukulu.
Tikukhulupirira kuti zinthu zathu zidzakuthandizani komanso kufufuza kwanu.
