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Micro-Optic Wavelength Division Multiplexer (MWDM) is based on thin-film filter technology and metal bonding micro optics packaging. This device offers very flat and wide passbands, low insertion loss, and high isolation which makes it ideal for combining pump(980nm) and signal light(1550nm) in Optical Fiber Amplifier Systems. In DWDM systems, this component is used in high-power applications. All products are epoxy-free in the optical path. MWDM devices are Bellcore GR-1221 qualification tested.