Optical Filter is a device that selectively permits transmission or blocks a range of wavelengths. Optical filters are typically bandpass or band-reject (shown in the figures below). A bandpass optical filter allows a certain range of optical wavelengths to pass and attenuates the rest (left), while a band-reject optical filter attenuates a band of optical […]
WDM Filter
Filter-based Wavelength Division Multiplexer
Filter-based Wavelength Division Multiplexer (Filter WDM, or FWDM) is based on the mature membrane filter technology, with a wide channel bandwidth, low insertion loss, high channel isolation degrees and high environmental stability and reliability. It is widely used in single-mode fiber optic communication systems and DFA. FTTX Filter WDM module is based on Thin Film […]