Coupling structure for optical transceiver module

Abstract

This invention, as a coupling structure for an optical signal element, includes: a signal light source, which includes a light-emitting side; and a focusing element disposed on the light-emitting side of the signal light source. The focusing element is hollow, with its two ends being the light-inlet end and the light-outlet end, respectively. The light-inlet end corresponds to the light-outlet side. The outer diameter of the focusing element gradually narrows towards the light-inlet end and the light-outlet end. In this way, the structure of the focusing element is used to concentrate the light emitted by the signal light source. Thus, in actual use, the light entering the optical fiber is concentrated by the focusing element, thereby reducing divergence loss.

Claims

1. A coupling structure for an optical signal element, comprising: A signal light source includes a light-emitting side; a focusing element is disposed on the light-emitting side of the signal light source, the focusing element is hollow, and the two ends of the focusing element are a light-inlet end and a light-emitting end, respectively, the light-inlet end is opposite to the light-emitting side, and the outer diameter of the focusing element gradually decreases in the direction of the light-inlet end and the light-emitting end.

2. The coupling structure of the optical signal element as described in claim 1, further defining an imaginary ellipsoid, the imaginary ellipsoid comprising a first imaginary end segment, a second imaginary end segment, and an imaginary ellipsoidal body segment, the imaginary ellipsoidal body segment being located between the first imaginary end segment and the second imaginary end segment, the peripheral shape of the focusing element corresponding to the imaginary ellipsoidal body segment, the boundary between the first imaginary end segment and the imaginary ellipsoidal body segment having a first focal point, the boundary between the second imaginary end segment and the imaginary ellipsoidal body segment having a second focal point, the light input end corresponding to the first focal point, and the light output end corresponding to the second focal point.

3. The coupling structure of the optical signal element as described in claim 1, wherein the material of the focusing element includes a high-reflectivity adhesive.

4. The coupling structure of the optical signal element as described in claim 1, wherein the cross-sectional diameter of the light-incident end is 50 μm or 34 μm.

5. The coupling structure of the optical signal element as described in claim 1, wherein the cross-sectional diameter of the light-emitting end is 65 μm.

6. A coupling structure for an optical signal element, comprising: An optical signal receiving element includes an incident light side; a focusing light element is disposed on the incident light side of the optical signal receiving element, the focusing light element is hollow, and the two ends of the focusing light element are an incident light end and an exit light end, respectively, the exit light end is opposite to the incident light side, and the outer diameter of the focusing light element gradually decreases in the direction of the incident light end and the exit light end.

7. The coupling structure of the optical signal element as described in claim 6, further defining an imaginary ellipsoid comprising a first imaginary end segment, a second imaginary end segment, and an imaginary ellipsoidal body segment, the imaginary ellipsoidal body segment being located between the first imaginary end segment and the second imaginary end segment, the peripheral shape of the focusing element corresponding to the imaginary ellipsoidal body segment, the boundary between the first imaginary end segment and the imaginary ellipsoidal body segment having a first focal point, the boundary between the second imaginary end segment and the imaginary ellipsoidal body segment having a second focal point, the light input end corresponding to the first focal point, and the light output end corresponding to the second focal point.

8. The coupling structure of the optical signal element as described in claim 6, wherein the material of the focusing element includes a highly reflective adhesive.

9. The coupling structure of the optical signal element as described in claim 6, wherein the cross-sectional diameter of the light-emitting end is 50 μm.

10. The coupling structure of the optical signal element as described in claim 6, wherein the cross-sectional diameter of the light-incident end is 65 μm.

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