The present invention relates to a multi-wavelength optical subassembly module, and more particularly, to a multi-wavelength optical subassembly module that includes a housing part connected to an optical cable, a plurality of optical filter parts coupled to the housing part and guiding an optical signal, A plurality of transmission / reception units for receiving or transmitting optical signals to the optical filter unit, and a substrate unit to which the transmission / reception units are respectively coupled, thereby suppressing optical signal distortion and reducing the product defect rate through reliability evaluation.
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