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Optical coupler

A technology of optical coupler and grating, which is applied in the field of optical coupler, can solve the problem that the light field mode does not expand, and achieve the effects of overcoming energy loss, improving reliability, and increasing efficiency

Active Publication Date: 2019-07-30
OPLINK COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Please refer to figure 2 , the other existing optical coupler utilizes a plurality of tapered structures 432, 433, 434 to expand the size of the light field mode in the horizontal direction, but the vertical light field mode does not expand

Method used

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  • Optical coupler
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Embodiment Construction

[0106] The following disclosure provides many different embodiments, or examples, for implementing the various features of the application. Specific examples of components and arrangements are described below to simplify the disclosure of the present application. Of course, these are examples only and are not intended to limit the application. For example, the following description of forming a first feature on or over a second feature may include embodiments in which first and second features are formed in direct contact, and may also include embodiments in which other features are formed between the first and second features. , so the first and second features are not in direct contact. In addition, the application may repeat element symbols and / or letters in different examples. This repetition is for simplicity and clarity and does not dictate the relationship between the different embodiments and / or architectures discussed.

[0107] Furthermore, the present application ...

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Abstract

The invention provides an optical coupler. The optical coupler comprises an optical waveguide. The optical waveguide comprises a body part, a first lower-layer finger-shaped structure, a second lower-layer finger-shaped structure, a first upper-layer finger-shaped structure and a second upper-layer finger-shaped structure. The first lower-layer finger-shaped structure is connected with the body part. The second lower-layer finger-shaped structure is connected with the body part. The first lower-layer finger-shaped structure, the second lower-layer finger-shaped structure and the body part define a U-shaped structure in the front-back direction, and an opening of the U-shaped structure faces the front. The first upper-layer finger-shaped structure is located above the first lower-layer finger-shaped structure and is connected with the body part. The second upper-layer finger-shaped structure is located above the second lower-layer finger-shaped structure and is connected with the body part. An optical field mode is expanded by the optical coupler by utilizing the double-layer finger-shaped structures.

Description

technical field [0001] The present disclosure relates to an optical device, and in particular to an optical coupler for coupling an optical field and an integrated circuit. Background technique [0002] figure 1 It is a structural schematic diagram of an existing optical coupler, which is disclosed in US Patent No. US9002263. Please refer to figure 1 , the conventional optical coupler utilizes a double-layer cone structure of a first cone structure 114a and a second cone structure 116a to expand the size of an optical field mode in the vertical direction, thereby reducing coupling energy loss. However, the energy loss reduced in this way is limited. [0003] figure 2 It is a structural schematic diagram of another conventional optical coupler, which is disclosed in US Patent No. US9477043. Please refer to figure 2 , the other existing optical coupler utilizes a plurality of tapered structures 432, 433, 434 to expand the size of the light field mode in the horizontal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/42G02B6/12G02B6/122
CPCG02B6/12009G02B6/1228G02B6/428G02B2006/12107
Inventor 杨立启曾智伟吴志忠庄荣敏
Owner OPLINK COMM
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