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 |
