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Athermal DWDM FBG Filter
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With the development of DWDM systems, high isolation channel is necessary to avoid crosstalk. Based on Raysung’s FBG, our  athermal  DWDM FBG filter features for flat top response and a steep roll down spectral range, which is available in an individual package or combined with multiple filters to form a complete add/drop module. The specifications for Raysung's Athermal DWDM FBG filter are listed  in the tables below.



Low insertion loss

Athermal package

High channel isolation

Accurate ITU grid

Excellent long-term stability



DWDM system 50/100/200 GHz in fiber narrowband signal filtering

OADM module, mux/demux

Wavelength selection or  rejection filter 





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