Optical module and optical transceiver module

Patent metadata

Field	Value
Publication number	US-9195017-B2
Application number	US-201313912619-A
Country	US
Kind code	B2
Filing date	Jun 7, 2013
Priority date	Apr 1, 2013
Publication date	Nov 24, 2015
Grant date	Nov 24, 2015

Abstract

An optical module includes a first light-guide element, an optical element, a first optical fiber, and a beam splitter. The first light-guide element includes a first surface and a second surface. The optical element corresponds to the first surface. The first optical fiber is contacted with the second surface. The beam splitter is attached to the first surface, the beam splitter partially reflects and partially transmits a light beam striking thereon. A refractive index of the beam splitter is different from a refractive index of the first light-guide element.

First claim

What is claimed is:

1. An optical module comprising:
a first light-guide element comprising a first surface and a second surface;
an optical element corresponding to the first surface, the optical element being configured to emit a first light beam into the first light-guide element;
a first optical fiber contacted with the second surface, and
a beam splitter attached to the first surface, the beam splitter being configured to split the first light beam into a second light beam and a third light beam, to reflect the second light beam, and to refract the third light beam,
wherein
a refractive index of the beam splitter is different from a refractive index of the first light-guide element,
the first light-guide element, the optical element, and the beam splitter are positioned such that the first light-guide element is capable of reflecting the first light beam twice before the first light beam is split into the second light beam and the third light beam by the beam splitter, and
the first light-guide element is configured to reflect the second light beam between the beam splitter and the first optical fiber.

2. The optical module in claim 1 , further comprising an optical combining structure disposed between the first light-guide element and the beam splitter, the optical combining structure is used for fastening the beam splitter on the first light-guide element.

3. The optical module in claim 1 , further comprising a micro optical sensor for sensing a transmitting light beam transmitting through the bean splitter.

4. The optical module in claim 1 , wherein the refractive index of the first light-guide element is between 1.12 and 2.08.

5. The optical module in claim 1 , wherein the beam splitter is a filtering plate, an optical film, an optical resin or an optical cement.

6. The optical module in claim 1 , wherein a light emitting surface of the beam splitter comprises a plurality of micro-structures.

7. The optical module in claim 1 , wherein a protrusive portion is formed on the first surface, the optical element corresponds to the protrusive portion.

8. The optical module in claim 1 , wherein a recess is formed on the first surface, the beam splitter is contacted with the recess.

9. An optical transceiver module comprising:
an optical module comprising:
a first light-guide element comprising a first surface and a second surface;
an optical element corresponding to the first surface, the optical element being a light emitting element configured to emit a first light beam into the first light-guide element;
a first fiber contacted with the second surface; and
a beam splitter attached to the first surface, the beam splitter being configured to split the first light beam into a second light beam and a third light beam, to reflect the second light beam, and to refract the third light beam, wherein a refractive index of the beam splitter is different from a refractive index of the first light-guide element;

a second light-guide element combining with the first light-guide element;
a second fiber corresponding to the second light-guide element for propagating an external light beam into the second light-guide element; and
a light receiving element corresponding to the second light-guide element, the light receiving element configured of receiving the external light beam,

wherein
the first light-guide element, the optical element, and the beam splitter are positioned such that the first light-guide element is capable of reflecting the first light beam twice before the first light beam is split into the second light beam and the third light beam by the beam splitter, and
the first light-guide element is configured to reflect the second light beam between the beam splitter and the first optical fiber.

10. The optical transceiver module in claim 9 , wherein the first light-guide element and the second light-guide element are in one-piece form or the first light-guide element and the second light-guide element are combined by connecting to each other.

11. The optical transceiver module in claim 9 , further comprising an optical combining structure disposed between the first light-guide element and the beam splitter, the optical combining structure is used for fastening the beam splitter on the first light-guide element.

12. The optical transceiver module in claim 9 , further comprising a micro optical sensor for sensing a transmitting light beam transmitting through the beam splitter.

13. The optical transceiver module in claim 9 , wherein the refractive index of the first light-guide element is between 1.12 and 2.08.

14. The optical transceiver module in claim 9 , wherein the beam splitter is a filtering plate, an optical film, an optical resin or an optical cement.

15. The optical transceiver module in claim 9 , wherein a light emitting surface of the beam splitter comprises a plurality of micro-structures.

16. The optical transceiver module in claim 9 , wherein a protrusive portion is formed on the first surface, the optical element corresponds to the protrusion portion.

17. The optical transceiver module in claim 9 , wherein a recess is formed on the first surface, the beam splitter is contacted with the recess.

Assignees

• Delta Electronics Inc

Inventors

• Liao Yu-Hsien
• Huang Ming-Yi
• Yang Te-Hsuan

Classifications

• H04B10/40

  Transceivers · CPC title

• G02B6/4255

  Moulded or casted packages · CPC title

• G02B6/4286 Primary

  Optical modules with optical power monitoring · CPC title

• G02B6/4214

  the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device (G02B6/4246 takes precedence) · CPC title

• G02B6/4246

  Bidirectionally operating package structures · CPC title