The Tunics Purity offers a patented configuration ensuring intracavity filtering of the background broadband ASE noise. The equivalent full width at half maximum (FWHM) of this filtering is as narrow as 0.15 nm, which makes the residual ASE almost unnoticeable. This pure ASE-noise-free operation does not compromise other key features of the state-of-the art tunable external cavity laser-diodes. The laser provides up to +3 dBm output power and covers E-, S- and C-band.

Tunics Purity emits a pure high-power single-frequency laser line, enabling direct spectral measurements of filters and multiplexers with an unsurpassed dynamic range. This avoids complex set-ups requiring an additional tracking filter or the combination of an OSA, which often causes loss.

The Tunics Purity combines two operating modes: STep-by-STep and Sweeping Mode. The sweeping ability delivers a continuous variation of the wavelength at a constant rate to enable a fast and uninterrupted measurement. In Step-by-Step application, the laser exhibits a high wavelength stability suitable for long-term testing.