WAVELENGTH DIVISION MULTIPLEX RECEIVER MODULE

摘要

PROBLEM TO BE SOLVED: To provide a wavelength division multiplex receiver module which can be easily assembled at a low cost.

SOLUTION: A wavelength division multiplex receiver module comprises: an optical fiber 14 for emitting optical signals including light of multiple wavelengths; a prism 18 arranged so that the optical signals are incident thereon; a total reflection mirror 18a fastened on a first surface of the prism 18; a band pass filter 18b fastened on a second surface facing the first surface of the prism; and a light receiving element 26 for receiving light which has passed through the band pass filter 18b. The first surface is angled against the second surface. Wavelength of light capable of passing through the band pass filter 18b is different depending on an incident angle of the light, and the band pass filter 18b reflects light which can not pass.

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