General Optics
Optical Filters for Telecom
Build high-performance coarse wavelength division multiplexing (CWDM) and dense wavelength division multiplexing (DWDM) modules with these state-of-the-art filters.
Coherent leverages proprietary thin-film deposition process, including state-of-the-art layer thickness control, to produce the industry’s best telecom filter solutions for 200 GHz/100 GHz/50 GHz WDM components.
CWDM/DWDM Filters Specifications
Select from these CWDM/DWDM filters, or contact us about custom products including high-performance skip filters, gain-flattening filters, and dual-band filters.
Parameters |
CWDM Filter |
DWDM Filter |
Operating Wavelength Range |
1250 nm to 1620 nm |
1250 to 1620 nm |
Typical Bandwidth |
13 nm to 15 nm |
< 0.5 nm |
Channel Spacing |
20 nm |
50/100/200 GHz |
Central Wavelength |
1271/1291/1311 nm... to 1611 nm |
1520.25/1521.02/1521.79 nm… to 1577.03 nm |
Transmission / Reflection Insertion Loss |
< 0.35 dB |
|
Transmission / Reflection Ripple |
< 0.25 dB |
|
Transmission Isolation for Adjacent Channel |
> 30 dB |
|
Transmission Isolation for Non-adjacent Channel |
> 45 dB |
|
Reflection Isolation |
> 13 dB |
|
Temperature Shift |
< 2 pm/°C |
|
Incidence Medium |
Air |
|
AOI |
1.8 degree for 3-port coupler 13.5 degree for CCWDM |
1.8 degree for 3-port coupler |
Wedge |
0.25 degree |
|
Typical Size |
1.2 x 1.2 x 1.0 mm, 1.4 x 1.4 x 1.0 mm |
1.4 x 1.4 x 1.0 mm |
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Optical Manufacturing Capabilities
Learn about the vertically integrated capabilities for material growth, fabrication, coating, and assembly, and rigorous QA at Coherent. Discover how these ensure the performance and reliability of our optics and minimize supply chain risks and uncertainties.
