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Optical waveguide coupler

A technology of optical waveguide coupling and optical coupler, which is applied in the field of optical communication applications and can solve the problems of low optical coupling efficiency of semiconductor lasers and silicon optical chips

Active Publication Date: 2018-05-11
HISENSE BROADBAND MULTIMEDIA TECH
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  • Description
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Problems solved by technology

[0006] In order to solve the technical problem of low optical coupling efficiency of semiconductor lasers and silicon optical chips in the related art, the present disclosure provides an optical waveguide coupler

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Embodiment Construction

[0035] Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0036] Such as figure 1 As shown, the present invention provides an optical waveguide coupler 1100 . figure 1 is a schematic structural diagram of the optical waveguide coupler 1100, Figure 7-17 It is a schematic cross-sectional view of different regions of the optical waveguide coupler 1100 in the length direction and a light spot pattern formed by cross-sections of light passing through differe...

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Abstract

The invention discloses an optical waveguide coupler. The optical waveguide coupler is composed of a plurality of waveguides having a gradually varied width and height. A front-end coupling region andan optical coupling region are arranged in sequence along the length direction of the optical coupler. Since the width and thickness of a front-end waveguide in the front-end coupling region are thesmallest at a light incident end, the optical coupler is allowed to have multiple waveguide tips, with speckles of the multiple waveguide tips overlapping one another, and the matching between the spot size of the optical coupler and the output spot size of a laser can be realized to couple the light output from the laser into a silicon photonic chip. The optical coupler has the advantages of simple structure and high optical coupling efficiency.

Description

technical field [0001] The present disclosure relates to the technical field of optical communication applications, in particular to an optical waveguide coupler. Background technique [0002] With the increasingly higher bandwidth requirements for information transmission, the optical communication market has an increasing demand for high-speed optical modules above 100Gbps. It has become an urgent need to develop high-bandwidth, low-cost and high-integration high-speed optical modules using silicon photonics integration technology. [0003] At present, passive silicon optical devices such as high-speed silicon optical modulators, high-speed detectors, low-loss transmission waveguides, and wavelength division multiplexing have been fabricated on silicon optical chips. And it realizes single-channel 25Gpbs or 50Gbps information transmission by integrating various functional devices on the same silicon photonics chip. [0004] However, silicon is an indirect bandgap materia...

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Application Information

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IPC IPC(8): G02B6/42
CPCG02B6/4206G02B6/4291
Inventor 隋少帅
Owner HISENSE BROADBAND MULTIMEDIA TECH
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