Varius-NL-15xx-T is a wavelength tunable 1535 nm - 1575 nm or 1540 nm - 1580 nm CW fiber laser. Varius key feature is the wavelength tuning with a step of 0.2 nm. Varius-NL-15xx-T is controlled by digital display, switches and adjustment knobs which are placed on the front-panel. A full set of control electronics and power supply are included in the delivery package. The computer control software is provided optionally. Varius-NL-15xx-T is a perfect tool due to excellent performance, high reliability, and lower cost. Varius can be enclosed in the compact size housing for OEM integration which dimensions can be designed by customers request.