Ma Crystal Oscillators Osiyanasiyana: Mapulogalamu ndi Matekinoloje Ofunika mu Optical Communication Modules

Pamene umisiri wolumikizana ndi maso ukupita patsogolo pa liwiro lapamwamba, kachulukidwe kwambiri, ndi kutsika kwa mphamvu yamagetsi, kukhazikika ndi kuletsa-kuletsa kusokoneza kwa mawotchi kwakhala kofunika kwambiri pakugwira ntchito kwadongosolo lonse. Ma crystal oscillator osiyanasiyana, omwe ali ndi njira yawo yapadera yotumizira ma siginecha, akuchulukirachulukira ngati mawotchi apakatikati mu ma module owoneka ngati 400G/800G ma transceivers opangira.

I. Zofunikira pa Mawotchi ndi Zovuta mu Ma modules a Optical Communication

M'makina olankhulirana owoneka bwino, ma module a optical ali ndi udindo wosinthira bwino ma siginecha amagetsi kukhala ma sign optical. Zigawo zazikulu monga madalaivala a laser, TIAs, ndi ma CDR mabwalo amakakamiza ma sign a wotchi:

Phokoso ndi jitter yapagawo lotsika: -Kutumiza mwachangu ma siginolo (monga 56Gbps PAM4, 112Gbps NRZ) kumafuna kuti jitter ikhale pansi pa 100 fs (femtosecond level) kuti apewe kuchuluka kwa zolakwika pang'ono (BER).

EMI resistance: M'malo ovuta kufikako a electromagnetic environment of high-density modules, single-wotchi yothera nthawi zambiri imakhala yodutsana.

Kukhazikika kwa kutentha: Ma modules ayenera kukhala okhazikika pafupipafupi (± 2.5 ppm kapena kuposa) pa kutentha kwakukulu (-40 digiri mpaka 85 digiri).

II. Ubwino Waukadaulo wa Ma Crystal Oscillators Osiyanasiyana

Poyerekeza ndi -oscillator yotha, ma crystal oscillator amatulutsa magawo awiri-zizindikiro zosiyanitsidwa (monga LVDS, LVPECL), zomwe zimawongolera magwiridwe antchito a makina:

Kuthekera kwa Kusokoneza-Kusokoneza

Nthawi zambiri-kukana phokoso: Olandira osiyanasiyana amachotsa phokoso-lomwe limachitikira (monga kusinthasintha kwa mphamvu ndi EMI) pochotsa.

Kuchepekedwa kwa EMI ma radiation: Njira zama siginecha zofananira zimachotsa minda yamagetsi, kuchepetsa ma radiation ndi pafupifupi 20 dB.

Kukhathamiritsa kwa Signal Integrity

Kupha kwakukulu: Kusintha kofulumira kumafupikitsa nthawi yokwera ndi kugwa, zomwe ndizofunikira kwambiri pa 56Gbps + SerDes.

Kufananiza kwa Impedans: Zosiyanasiyana zimafanana ndi 100Ω impedance, kuphweka kwa PCB.

Kugwiritsa Ntchito Mphamvu Zochepa
Ma LVDS{{0}makamaka oscillator osiyanitsira amadya mphamvu zochepera 60–70% kuposa imodzi-zotha, pokwaniritsa{4}}mphamvu zotsika monga QSFP-DD.

III. Zomwe Zimagwira Ntchito mu Optical Modules

High-Speed ​​SerDes Clock Source
Ntchito: Amapereka mawotchi owonetsera PAM4 modulators ndi mabwalo a CDR.
Chitsanzo: Ma module a 100G/400G amagwiritsa ntchito 156.25 MHz kapena 312.500 MHz oscillators osiyanitsa okhala ndi<50 fs RMS jitter (integrated over 12 kHz–20 MHz).

Kulunzanitsa{{0}Makanema angapo
Kugwiritsa ntchito: Kuyanjanitsa magawo mumitundu yambiri-matchanelo (monga CFP2/QSFP-DD).
Ukadaulo wofunika kwambiri: -zowonjezera zotulutsa zambiri (monga 4-channel LVDS) zimachepetsa skew kufika ±50 ps.

Malipiro a Kutentha
Zosiyana TCXO: Integrates masensa kutentha ndi ma aligorivimu malipiro kukwaniritsa ± 2.5 ppm pafupipafupi bata pa -40 digiri 85 digiri.

IV. Mayendedwe Pamakampani ndi Zosankha Zosankha

Technology Trends

Ma frequency apamwamba: 224 GHz oscillator tsopano amathandizira ma module a 1.6T.

Miniaturization: 2520 phukusi (2.5×2.5 mm) akusintha 5032/7050 phukusi la CPO (Co-Packaged Optics).

Kuphatikiza: Ma oscillator okhala ndi-zosefera mphamvu zomangidwira mkati ndi kufalikira kwa sipekitiramu amachepetsa kuchulukirachulukira.

Mfundo Zosankhira (Makalasi Amakampani)

Mitundu ya Hangjing: 1532C6-156.250K18DTSTL, 1553D-156.250K33DTSTL, 1575C-156.250K33DTSTL, 1532D-312.500J33DTL, 13K33D0D0-DTL, 13K33D0D0.

Zapamwamba-Zokhazikika/Zapamwamba{1}}Zofunika Zolondola
TCXO (LVDS/LVPECL): Mndandanda wa TC32D6/TC32P6/TC53H8 wa Hangjing umakwaniritsa zofunikira:

Kuti mudziwe zambiri-ma oscillator osiyanitsira magwiridwe antchito, chonde funsani akatswiri a Hangjing's application kuti mupeze mayankho ogwirizana ndi makonda anu.

Mapeto

Ma crystal oscillator osiyanasiyana, okhala ndi kukana kwa EMI, kutsika pang'ono, ndi maubwino ophatikiza, ndi ofunikira pama module apamwamba-wothamanga kwambiri. Pamene kuyankhulana kwa kuwala kukupita patsogolo mu nthawi ya 800G / 1.6T, teknoloji yosiyana ya wotchi idzapitirira kukankhira malire a ntchito.