XTA-50 is the most selective filter available on the market. It features an adjustable bandwidth down to 50pm (6.25 Ghz) and up to 800pm.

The extremely sharp edges ensure a clean cut between the signal and the adjacent channels or noise (more than 500 dB/ nm roll-off) while the square shape with an ultra flat-top design (0.2 dB flatness) ensures data integrity.

XTA-50 operates from 1450 to 1650 nm in a single instrument. The translation stages used in XTA-50 to tune wavelength and FWHM ensures a perfect accuracy and repeatability over time.