# US 12,111,505 B2 · Light guiding device and light guiding device applied to silicon photonics structure

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- Number: US 12,111,505 B2
- Document ID: US12111505B2
- Status: Granted
- Kind: B2
- Application number: 17/728,908
- Filed: 2022-04-25
- Published: 2023-06-15
- Granted: 2024-10-08
- Earliest claimed: 2021-12-14
- Assignees: Star Technologies (Wuhan) Co., Ltd.
- Applicants: Star Technologies (Wuhan) Co., Ltd.
- Inventors: Choon Leong Lou
- Web page: https://patentgrep.com/patent/US12111505B2

## CPC

- G02B 6/4246: {Bidirectionally operating package structures}
- G02B 6/4214: {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)}
- H04B 10/43: using a single component as both light source and receiver, e.g. using a photoemitter as a photoreceiver
- H04B 10/801: {using optical interconnects, e.g. light coupled isolators, circuit board interconnections}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H04B: TRANSMISSION

## Abstract

A light guiding device for applying to silicon photonics structure is provided. The light guiding device includes an optical transceiver and a reflective structure. The reflective structure is disposed on the optical transceiver. The reflective structure has a reflective surface facing the optical transceiver, and the reflective surface is used for reflecting at least one light transmitted between the optical transceiver and a waveguide structure of the silicon photonics structure.

## Claims

### Claim 1

A light guide device applied to a silicon photonics structure, comprising:
an optical transceiver;
a reflective structure having a reflective surface facing the optical transceiver, wherein the reflective surface is configured to reflect at least one light transmitted between the optical transceiver and a waveguide structure of the silicon photonics structure; and
a positioning platform configured to connect to the optical transceiver and the reflective structure, wherein the optical transceiver and the reflective structure are configured to move in three dimensions and adjust a relative position of each other through use of the positioning platform.

### Claim 2 (depends on 1)

The light guide device according to claim 1, wherein the silicon photonics structure further includes a silicon substrate; wherein the waveguide structure is disposed in the silicon substrate, and a slot is formed on an upper surface of the silicon substrate; wherein the reflective structure is configured to extend into the slot, so that the reflective surface faces the waveguide structure.

### Claim 3 (depends on 2)

The light guide device according to claim 2, wherein, when the reflective structure is configured to extend into the slot, a distance between a bottom surface of the reflective structure and a bottom of the slot is smaller than a distance between the waveguide structure and the bottom of the slot.

### Claim 4 (depends on 1)

The light guide device according to claim 1, wherein the reflective surface is a curved surface in a concave shape.

### Claim 5 (depends on 4)

The light guide device according to claim 4, wherein the curved surface is a spherical surface.