Input polarizer is an optical component that filters incoming light to a specific polarization state for optical isolators.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Clear Aperture | >90% | |
| Insertion Loss | <0.5 dB | |
| Surface Quality | 20-10 scratch-dig | |
| Damage Threshold | >500 mW | |
| Extinction Ratio | >30 dB | |
| Wavelength Range | 1260-1650 nm | |
| Operating Temperature | -40°C to +85°C | |
| Polarization Dependent Loss | <0.1 dB |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
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The input polarizer converts incoming unpolarized or randomly polarized light into linearly polarized light, which is necessary for the Faraday rotator to function properly in preventing back-reflections.
Higher extinction ratios (>30 dB) ensure better polarization purity, reducing unwanted polarization components that could compromise isolation performance and increase insertion loss.
Yes, input polarizers are designed for specific wavelength ranges (typically 1260-1650 nm for telecom applications) and must be selected according to the operating wavelength of the optical system.
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