The present invention relates to a multi-wavelength optical subassembly module, which comprises: a housing unit connected with an optical cable; a plurality of optical filter units coupled to the housing unit and guiding an optical signal; and a substrate unit coupled to the housing unit, and mounted with a plurality of transceiving portions for receiving an optical signal through the optical filter unit or transmitting the optical signal to the optical filter unit. Accordingly, the distortion of the optical signal can be suppressed, and the product defect rate can be lowered through the reliability evaluation.
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