Apr 10, 2026 Tso lus

Thermoelectric Coolers Tiv Thaiv Thermal Drift hauv Compact Optical Systems

Photonics thev naus laus zis txuas ntxiv mus rau cov qauv me me thiab muaj zog ntau dua. Raws li cov khoom siv kho qhov muag hloov zuj zus los ntawm cov pob khoom sib cais mus rau kev sib koom ua ke photonic circuits, cov cua kub hauv ib cheeb tsam nce siab. Lub laser diode ua haujlwm nyob rau hauv ob peb millimeters ntawm pob cheeb tsam tuaj yeem tsim cov cua sov hauv zos uas siab tshaj 100 W / cm2, piv txwv li, thaum copackaged optics thiab lwm qhov ntom ntom optical subassemblies thawb cov nqi no ntau dua.

Cov teebmeem thermal cuam tshuam ncaj qha rau kev ua haujlwm kho qhov muag. Lub wavelength, lub zog tso zis, tus cwj pwm hloov pauv, thiab lub suab nrov ntawm lub ntsuas ntsuas sib txawv nrog qhov kub thiab txias. Rau cov tshuab uas qhov kev ua tau zoo yog nqaim, txawm tias me me thermal deviations tuaj yeem txhais rau hauv channel misalignment, ntsuas qhov yuam kev, lossis cov duab tsis zoo. Raws li cov khoom siv photonic ua ntau dua thiab sib xyaw ua ke, kev ua kom txias ib leeg feem ntau tsis muaj qhov yuav tsum tau ua kom muaj kev ua haujlwm zoo ib yam. Yog li ntawd, kev ua haujlwm thermal tswj tau nce ntxiv ntawm cov cuab yeej thiab pob qib.

FIGURE 1. Operating principle of a thermoelectric cooler based on the Peltier effect: When current flows through the semiconductor elements between ceramic substrates, heat is absorbed at the cold side and rejected at the hot side to create a controlled temperature differential across the device.

Thermoelectric coolers thiab active kub tswj

Thermoelectric coolers (TECs) ua haujlwm raws li cov nyhuv Peltier, ib qho khoom muaj txiaj ntsig -lub xeev qhov tshwm sim uas siv hluav taws xob tam sim no ua rau cov hluav taws xob thauj mus los ntawm kev sib tshuam ntawm cov khoom sib txawv ntawm cov khoom siv semiconductor. Thaum tam sim no ntws, cua sov yog nquag nqus los ntawm ib sab ntawm lub cuab yeej mus rau lwm qhov. Tsis zoo li cov dab hluav taws xob tsis zoo lossis kev sib txuas-raws li txoj hauv kev, cov khoom siv hluav taws xob thermoelectric muab kev tswj qhov kub thiab txias es tsis yog cia siab rau kev sib kis thiab tshem tawm (saib daim duab . 1).

 

Photonics thev naus laus zis txuas ntxiv mus rau cov qauv me me thiab muaj zog ntau dua. Raws li cov khoom siv kho qhov muag hloov zuj zus los ntawm cov pob khoom sib cais mus rau kev sib koom ua ke photonic circuits, cov cua kub hauv ib cheeb tsam nce siab. Lub laser diode ua haujlwm nyob rau hauv ob peb millimeters ntawm pob cheeb tsam tuaj yeem tsim cov cua sov hauv zos uas siab tshaj 100 W / cm2, piv txwv li, thaum copackaged optics thiab lwm qhov ntom ntom optical subassemblies thawb cov nqi no ntau dua.

Cov teebmeem thermal cuam tshuam ncaj qha rau kev ua haujlwm kho qhov muag. Lub wavelength, lub zog tso zis, tus cwj pwm hloov pauv, thiab lub suab nrov ntawm lub ntsuas ntsuas sib txawv nrog qhov kub thiab txias. Rau cov tshuab uas qhov kev ua tau zoo yog nqaim, txawm tias me me thermal deviations tuaj yeem txhais rau hauv channel misalignment, ntsuas qhov yuam kev, lossis cov duab tsis zoo. Raws li cov khoom siv photonic ua ntau dua thiab sib xyaw ua ke, kev ua kom txias ib leeg feem ntau tsis muaj qhov yuav tsum tau ua kom muaj kev ua haujlwm zoo ib yam. Yog li ntawd, kev ua haujlwm thermal tswj tau nce ntxiv ntawm cov cuab yeej thiab pob qib.

Thermoelectric coolers thiab active kub tswj

Thermoelectric coolers (TECs) ua haujlwm raws li cov nyhuv Peltier, ib qho khoom muaj txiaj ntsig -lub xeev qhov tshwm sim uas siv hluav taws xob tam sim no ua rau cov hluav taws xob thauj mus los ntawm kev sib tshuam ntawm cov khoom sib txawv ntawm cov khoom siv semiconductor. Thaum tam sim no ntws, cua sov yog nquag nqus los ntawm ib sab ntawm lub cuab yeej mus rau lwm qhov. Tsis zoo li cov dab hluav taws xob tsis zoo lossis kev sib txuas-raws li txoj hauv kev, cov khoom siv hluav taws xob thermoelectric muab kev tswj qhov kub thiab txias es tsis yog cia siab rau kev sib kis thiab tshem tawm (saib daim duab . 1).

 

FIGURE 2. A laser diode mounted on a micro thermoelectric inside a TO-can package: The TEC maintains a stable junction temperature to reduce thermal drift.

 

 

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