Optical module with wavelength dividing filter passively aligned with respect to housing
AssigneeSumitomo Electric Device Innovations, Inc.
InventorTakeshi Okada
Life of this patent
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Abstract
An optical module that communicates with a single optical fiber is disclosed. The optical module includes an optical transmitting unit (Tx unit), an optical receiving unit (Rx unit), a filter holder that mounts a wavelength splitting filter, and a housing that installs the Tx unit, the Rx unit and the filter holder. The housing and the filter holder each provide slopes rubbing to each other that automatically determine the angle of the wavelength splitting filter.
Claims10
An optical module communicating a first optical signal having a first wavelength and a second optical signal having a second wavelength concurrently with a single optical fiber, the optical module comprising:
- a first optical unit coupled with the first optical signal along a first optical axis;
- a second optical unit coupled with the second optical signal along a second optical axis perpendicular to the first optical axis;
- a wavelength splitting filter that reflects one of the first optical signal and the second optical signal, and transmits another of the first optical signal and the second optical signal;
- a filter holder holding the wavelength splitting filter, the filter holder providing a flange and a pillar, the flange providing a pair of slopes sandwiching the pillar therebetween along the first optical axis;
- and
- a housing that attaches the first optical unit and the second optical unit thereto, the housing providing a first bore extending along the first optical axis, a second bore extending along the second optical axis, and a pair of slopes that sandwich the second bore therebetween along the first optical axis, the second bore installing the filter holder therein,
- wherein the pair of the slopes of the filter holder fit with the pair of the slopes of the housing, and the flange of the filter holder forms a gap against the housing.
Dependencies are inferred from the claim text.