Tunable Bandpass Filters

FWS-series

Turn-key, Flexible,
Multimodal, Compact

FWS-Poly uses software control (scanning or setting) of the center wavelength and the bandwidth
FWS-Poly uses software control (scanning or setting) of the center wavelength and the bandwidth
FWS-Basic is a manually tunable filter that features three knurled knobs
FWS-Basic is a manually tunable filter that features three knurled knobs
Flexible Wavelength Selector (FWS) is a compact optomechanical device for wavelength tuning and adjustable bandwidth from a circular aperture filter.
Flexible Wavelength Selector (FWS) is a compact optomechanical device for wavelength tuning and adjustable bandwidth from a circular aperture filter.

Flexible Wavelength Selector

The Wavelength Selector is a unique compact optomechanical device that utilizes the patented TwinFilm™ technology to deliver the wavelength tuning and adjustable bandwidth with the imaging advantages of a circular aperture filter. For comparison with other tunable filters please click here.

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  • Broad wavelength tuning (255 – 1650 nm, nominal)
  • Smoothly adjustable bandwidth (FWHM 3 – 15 nm, nominal)
  • Large (up to 10 mm diam.) circular aperture
  • High (106) out of band extinction
  • Compact optomechanical device
  • No beam deviation or walk-off during tuning
  • Simple and easy product integration
How to convert your basic light microscope into a fluorescence microscope
SLi’s Hyperspectral camera
Application note Fluorescence Imaging using Flexible Wavelength Selector and Broadband Light Source
Application note Hyperspectral imaging
FWS-Poly Spec Sheet
FWS-Poly Users Manual Ver
Quick Guide FWS-Basic
FWS-Basic Spec Sheet