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Thin-film based tunable filter is an ideal candidate for telecom application,especially for DWDM system, on account of its low insertion loss, flat-top transmission spectrum, and excellent thermal stability. With a innovative coating structure to increase the fabrication tolerance at larger AOI and new optical scheme to minimize PDL issue, Lightwaves2020’s step motor controlled 50GHz Angular Tunable Filters (ATF) is a better choice for competitive cost and compact size consideration.


  •  Flat-top transmission spectrum 

  •  Up to 40nm wavelength tuning range 

  •  Low PDL

  •  Tuning with stepper motor


  • Optical testing 

  • Dynamic channel selection in DWDM network 

  • Optical performance monitoring 

  • Noise suppression

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