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CWDM are based on thin film filter technology,used for network expansion,suitable for 4G and 5G network.Especially for 5G Fronthaul AAU/BBU widely with 10G,25G or other type optical transceiver.Exceed provide CWDM basic unit,1x2 CWDM Glass tube package, it’s made to be CWDM module,CWDM LGX,or CWDM 1U Rack mount.1x2 CWDM glass tube is CWDM basic unit,1x2 CWDM,2x2 CWDM,8skip0 CWDM,10skip0 CWDM,6skip0 CWDM,4skip0 CWDM,2skip0 CWDM,etc.
Features
 Low Insertion Loss
 Wide pass band
 High Channel Isolation
 High Stability and reliability
 Epoxy-free on Optical Path
 Applications
 Line Monitoring
 WDM Network
 Telecommunication
 Cellular Application
 Fiber Optical amplifier
 Acess Network
Specification
| Parameter | Unit | Value | |
| Channel Number | CH | 1x2 | |
| Channel Space | nm | 20 | |
| Central Wavelength | nm | 1270~1610(1271~1611) | |
| Operating wavelength | nm | 1260-1620 | |
| Center wavelength accuracy | nm | ±0.5 | |
| Passband(@-0.5dB bandwidth) | nm | ±7.5 | |
| Pass band Flatness(Ripple) | dB | ≤0.5 | |
| Insertion Loss | Pass Channel(Max.) | dB | 0.6 | 
| Reflection Channel(Max.) | dB | 0.4 | |
| Isolation | Adjacent Channel(Min.) | dB | 30 | 
| Non-Adjacent Channel(Min.) | dB | 45 | |
| Polarization Mode Dispersion | ps | ≤0.1 | |
| Polarization Dependent Loss | dB | ≤0.1 | |
| Directivity | dB | ≥50 | |
| Return Loss | dB | ≥45 | |
| Insertion Loss Temperature Sensitivity | dB/°C | 0.005 | |
| Wavelength Temperature Shifting | nm/°C | 0.002 | |
| Operation Temperature | °C | -5~+70 | |
| Storage Temperature | °C | -40~+85 | |
| Package Dimension | mm | Glass Tube | |

