Although their mechanisms are different, modelocking lasers and Lyot-filter lasers both produce a comb of multiple wavelengths which can be placed on the ITU grid for Dense Wave Division Multiplexing (DWDM) or used to give each suburban home its own return-signal laser wavelength in a passive optical network (PON) used to provide FTTH (Fiber To The Home).
Electronic filter | Digital filter | Cherry Filter | Air filter | Photographic filter | Ohne Filter | Kalman filter | digital filter | Water filter | water filter | Shiva amplifier chains showing spatial filter tubes (white) and Nd:glass amplifier structures (short blue tubes closest to camera). Portions of the 1982 Disney film ''Tron | Sand filter | Probabilistic data association filter | Oil filter | Neutral density filter | Klaus Filter | Fram (oil filter) | elliptic filter | CSS filter | Cast Iron Filter | Band-pass filter | air filter | Adaptive filter |