Optical splitter

An optical splitter and branching technology, which is applied in the field of optical devices and integrated optics, can solve problems such as increased device size and increased device design complexity, and achieve uniform output optical power, compact structure, and good scalability

Inactive Publication Date: 2012-10-17
上海光芯集成光学股份有限公司
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Problems solved by technology

[0002] The common glass-based ion-exchange optical power splitter is the Y-branch cascade optical splitter, which is usually composed of Y-branch cascades. This splitter has small device size and high power distribution when there are few branches Uniformity and other characteristics, but when the number of branches increases geometrically, the size of the device will increase greatly, and the complexity of device design will also further increase
Therefore, for multi-branch optical splitters, the method of Y-branch cascading has its limitations

Method used

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the embodiments shown in the accompanying drawings.

[0020] Such as figure 1 with 2 As shown, the optical splitter is made by glass-based ion exchange technology; each branch of the branch structure 2 is a waveguide with a taper, and the bending radius of each branch waveguide is designed according to a certain ratio, and the refractive index distribution of the expansion area 9 of the branch structure 2 It is gradual; the output end 5 of the branch structure 2 is connected to the first side 6 with a smaller arc of the free transmission zone 3 containing the Rowland circle structure; the light field is formed before reaching the expansion zone 9 through the branch structure 2 and entering the free transmission zone 3 Approximate sinusoidal function distribution; the input end 7 of the branch structure and the second side 8 with a larger arc of the free transmission area 3 are respectively conn...

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Abstract

Disclosed in the invention is an optical splitter, which comprises a branch structure (2) having a plurality of branches and a rowland circle structure having a free transmission zone (3). The branch structure includes an expansion zone (9), wherein the refractive index distribution is in a gradual changing mode so as to meet a sinusoidal function distribution requirement at an orthogonal direction of optical transmission. More specifically, the rowland circle structure comprises: an input end (2) and an output end (7); the input end (2) is connected with a first side (6) of the free transmission zone (3) containing the rowland circle structure, wherein the first side (6) has a small circular arc; and the output end is connected with an inputted waveguide (1); and a second side (8) of the free transmission zone (3) is connected with an outputted waveguide array (4), wherein the second side (8) has a larger circular arc. In addition, the invention also discloses a method for manufacturing the optical splitter. The provided optical splitter has advantages of compact structure, simple process and good extendibility.

Description

technical field [0001] The invention relates to the fields of optical devices and integrated optics, in particular to an optical splitter based on glass-based ion exchange technology. Background technique [0002] The common glass-based ion-exchange optical power splitter is the Y-branch cascade optical splitter, which is usually composed of Y-branch cascades. This splitter has small device size and high power distribution when there are few branches Uniformity and other characteristics, but when the number of branches increases geometrically, the size of the device will increase greatly, and the complexity of device design will also further increase. Therefore, for multi-branch optical splitters, the Y-branch cascading method has its limitations. Contents of the invention [0003] The object of the present invention is to provide an optical splitter, which is different from the traditional glass-based ion-exchange Y-branch cascaded optical splitter. The present invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/125G02B6/136
Inventor 杨建义郑伟伟郝寅雷王明华王毅强
Owner 上海光芯集成光学股份有限公司
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