| 摘要 |
The present invention relates to a light receiving module having a built-in tunable wavelength-selective filter that receives light by selecting a specific wavelength from among laser light of various wavelengths being emitted from an optical fibre, and can tune the wavelength being selected. The light receiving module having a built-in tunable wavelength-selective filter according to the present invention comprises a light receiving element having a built-in wavelength-tunable wavelength-selective filter and receives laser light emitted from an optical fibre, wherein the light receiving element (22) has a flat window (240) through which the laser light emitted from the optical fiber (600) passes, and also has, in the inside thereof, a wavelength-tunable selective filter (230) for performing wavelength division on the laser light entering as parallel light, and a lens (400) for converting the laser light emitted from the optical fiber (600) to parallel light is provided between the optical fiber (600) and the light receiving element (22). |
