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The Flexible Wavelength Selector Poly (Poly-RED, Poly-BLUE) is a tunable bandpass filter which utilizes TwinFilm™
technology to provide a simple software control (scanning or setting) of the center wavelength and the bandwidth
via a USB communication. With both high (10-6) out of band rejection and excellent (>75%) transmission, the Flexible
Wavelength Selector (FWS) is a simple, turnkey solution for various applications that require specific wavelength
excitation and detection throughout the extended wideband spectrum (255 – 1700 nm). Poly is simple to integrate
with broadband light sources, cameras, and other instruments, resulting in Tunable light source and Hyperspectral
imaging application.
Poly is divided into the Poly-RED and the Poly-BLUE product lines, depending on the bandwidth control function.
The Poly-RED model can control center wavelength and bandwidth (FWHM) simultaneously. For the Poly-BLUE
model, only the center wavelength can be controlled with the fixed bandwidth of 20 nm (nominal).
Also, Poly has different product lineups depending on input beam size. The Poly-A5 models have beam aperture of
5 mm and is mainly used in case of broadband light source with small beam size such as supercontinuum lasers.
For large beam sizes such as LEDs and lamps the Poly-A10 model with an aperture size of 10 mm is recommended.
1. Introduction
High precision
Accurate bandwidth control
Adjustable FWHM
2 - 15 nm (nominal)
1. Broadband spectral range
2. High damage threshold
3. High throughput
4. Diverse aperture size
5. Great out of band blocking
Appropriate precision
Improved output power
Fixed FWHM
20 nm (nominal)
Poly-RED Common Specifications Poly-BLUE
255 - 1700 nm
< 2 MW/cm2(CW)
> 75 %
5 / 10 mm
OD 12 at tuning range
OD 6 out of tuning range
