Electrically Optic Tunable Filter – Free-Space, Multimode/Single-Mode Fibers 5nm Linewidth

SKU: FOTF-EM

The FOTF-EM series motor-driven optical tunable filters are highly versatile, supporting free-space, multimode, and single-mode operation, unlike traditional etalon- or grating-based tunable filters that typically work only with single-mode fiber. Based on a proprietary edge-filter platform, these filters are available with center wavelengths ranging from 350 nm to 2450 nm. They provide continuous wavelength tuning over ranges up to 100 nm with an approximate 5 nm linewidth. Wavelength tuning is performed by a built-in precision stepper motor, controlled through USB or RS232 interfaces. The design offers high reliability, low insertion loss, and cost-effective performance, making it suitable for a wide range of applications. Standard wavelength configurations are produced in volume to ensure cost efficiency, while custom wavelengths are available at additional cost. The thin-film filter structure also incorporates blocking layers to suppress off-band transmission, ensuring improved spectral performance.