The FB1350-12 is a Bandpass Filter from Thorlabs, designed with a circular base shape and a diameter of 1 inch (25.4 mm). This filter is made of soda lime ru clear material and has a thickness of 3.5 mm. The filter is designed to have a central wavelength (CWL) of 1350 nm, with a full width at half maximum (FWHM) of 12 nm, providing a narrow bandwidth for specific wavelength selection.
The FB1350-12 filter is coated on both the front and back sides with the same coating (tho fb1350-12), suggesting that it is designed to be used in a transmission configuration. The cut-on wavelength is 1344 nm, and the cut-off wavelength is 1356 nm, providing a narrow passband around the central wavelength.
According to the vendor's information, this filter is in stock and available for immediate purchase. The catalog number for this item is FB1350-12, and more information can be found on Thorlabs' website.