20nm Polarization Maintaining 1x2 CWDM Filter
P/N: FIR-20-PM-12-CWDMF|SKU: 12060
Total Price
$479.00 / unit
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20nm Polarization Maintaining 1x2 CWDM Filter
The Firsol 20nm Polarization Maintaining 1x2 CWDM Filter is a three-port wavelength-selective device designed to add or drop a specific CWDM channel while maintaining the polarization state of optical signals. Based on thin-film filter (TFF) technology, it supports standard CWDM wavelengths from 1270 nm to 1610 nm with 20 nm channel spacing and a ≥13 nm passband. The filter features low insertion loss, ≥30 dB pass-channel isolation, ≥20 dB extinction ratio and both-axis operation. It uses PM1550 fiber with the slow axis aligned to the connector key by default and is available with customizable pigtail lengths, fiber protection and connector options. It is suitable for polarization-sensitive WDM networks, telecommunications, line monitoring and cellular applications.
Specifications
Parameter | Unit | Value |
|---|---|---|
Common Channel Wavelength | nm | ITU Grid |
Pass Channel Wavelength | nm | 1270, 1290…, 1610 etc. |
Wavelength Accuracy | nm | ±0.05 |
Channel Spacing | nm | 20 |
Channel Passband | nm | ≥13 (@-0.5dB) |
Pass Channel Insertion Loss | dB | ≤0.8 |
Pass Channel Isolation | dB | ≥30 |
Reflect Channel Insertion Loss | dB | ≤0.5 |
Reflect Channel Isolation | dB | ≥13 |
Extinction Ratio | dB | ≥20 |
Directivity | dB | ≥50 |
Return Loss | dB | ≥45 |
Max Optical Power (CW) | W | 0.3 |
Fiber Type | - | PM1550 |
Working Axis | - | Both Axis |
Package Dimensions | mm | Φ5.5 x L35 |
Operating Temperature | °C | -5 to +70 |
Storage Temperature | °C | -20 to +85 |
Notes: Tested at 25 °C. Data exclude connectors. Adding connectors will increase insertion loss by approximately 0.3 dB, reduce return loss by 5 dB, and decrease extinction ratio by 2 dB. The fiber slow axis is aligned to the key by default.
Dimensions
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