Coarse Wavelength Division Multiplexer (CWDM) Multi Channel, 4ch & 8ch

Dense Wavelength Division Multiplexer (DWDM) 100 GHz Spacing, Multi-Channel, 4ch, 8ch & 16chApplications:

  • CWDM Systems
  • Metro/Access Networks
  • Enterprise Networks
  • CATV Fiber Optic Links


  • RoHS 6/6 Compliant
  • Low Insertion Loss
  • High Channel Isolation

  • Flat and Wide Passband
  • Low Polarization Dependent Loss
  • Epoxy-Free Optical Path

  • Exceptionally Stable and Reliable
  • Telcordia GR-1221 Compliant
  • Thin-Film-Filter(TFF) Based


Based on Go!Foton’s patented technology, SELMUXTM series is introduced to cover all TFF-based components using an all-glass platform for improved performance, such as lower insertion loss and higher thermal stability, with a competitive cost structure. Because of its high thermal stability, SELMUX series can offer compliance to Outside Plant (OSP) requirement upon request.

Go!Foton’s Coarse Wavelength Division Multiplexing (CWDM) Mux and DeMux Modules are based on its unique TFF SELMUX technology that provides a high quality CWDM device with high channel isolation, low polarization dependent loss, flat and wide passband, and stable environmental performance.  Go!Foton’s TFF SELMUX products are epoxy-free in the optical path and are in compliance with RoHS 6/6.

Wavelength Spectrum:

Coarse Wavelength Division Multiplexer (CWDM) Multi Channel, 4ch & 8ch


  4ch   8ch
Center Wavelength (λc in nm) 1471.0,   1491.0,   1511.0,   1531.0
  1551.0,   1571.0,   1591.0,   1611.0
Operating Wavelength Range (nm)   1460 ~ 1620  
Passband Bandwidth ( nm)   λc  +/- 6.5  
Insertion Loss (dB) <1.5 (Prem.) <2.3 (Std.)   <2.2(Prem.) < 3.3(Std)
Passband Ripple (dB)   <0.5  
Optical Return Loss (dB)   >45  
Mux Module (dB)   Adjacent Ch.   >15  
                                       Non-Adjacent Ch.    >30  
DeMux Module (dB)  Adjacent Ch.   >25  
                                           Non-Adjacent Ch.    >45  
Polarization Dependent Loss (dB)   <0.2  
Directivity (dB)   >55  
Optical Power Handling (mW)   <500  
Operating Temperature Range (oC)   0 to 70  
Storage Temperature Range (oC)   -40 to 85  
Fiber Type   SMF-28e or Equivalent  
Fiber Length (m)   >1.0 (Standard)  
Package Size (mm) Standard:  (L)95 x (W)75 x (H)8
All specifications are without fiber connectors
* Center Wavelength in Shortband (1270, 1290, 1310... or 1271, 1291, 1311..) are available upon request.
* LGX Box / 19’ Rack Packaging option is available upon request.

Ordering Information:

Coarse Wavelength Division Multiplexer (CWDM) Multi Channel, 4ch & 8ch  


PDF data sheet