FWDM wavelength division multiplexer is a WDM technology based on thin film filter (TFF), which is widely used in EDFA fiber amplifiers, WDM networks and fiber optic instruments.
The main task of the 159A3.046 Cylinder Head is to close the combustion chamber of the engine from the top. The upper part of the engine is called the cylinder head, while the lower part is the engine block.