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On-chip mode division multiplexing device based on reflection effect

A technology of mode division multiplexing and reflection effect, applied in instruments, optical components, optical waveguides and light guides, etc., can solve the problems of large device size, wavelength sensitivity, and small tolerance of manufacturing errors, and achieve large working bandwidth, simple preparation, Produces effects with high tolerance to errors

Active Publication Date: 2021-01-15
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0003] In view of the above technical problems, the present invention discloses an on-chip mode division multiplexing device based on the reflection effect, which solves the problems that the existing mode division multiplexing structure and scheme are sensitive to wavelength, the size of the device is large, and the tolerance of manufacturing errors is small.

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  • On-chip mode division multiplexing device based on reflection effect
  • On-chip mode division multiplexing device based on reflection effect
  • On-chip mode division multiplexing device based on reflection effect

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Embodiment Construction

[0025] The preferred embodiments of the present invention will be further described in detail below.

[0026] Such as figure 1 and figure 2 As shown, an on-chip mode division multiplexing device based on the reflection effect, this embodiment has four modes on the chip, including TE0 mode, TE1 mode, TE2 mode and TE3 mode. The device includes a base layer 9, an optical waveguide layer 8 and a cladding layer 7, the optical waveguide layer 8 includes 4 single-mode waveguides, a tapered waveguide 5 and a wide multi-mode waveguide 6. The tail ends of the 4 single-mode waveguides It is connected to different positions on the same side of the tapered waveguide 5 , and the tail end of the tapered waveguide 5 is connected to the wide multimode waveguide 6 .

[0027] Wherein, the four single-mode waveguides include the first single-mode waveguide 1 (TE0 mode channel), the second single-mode waveguide 2 (TE1 mode channel), the third single-mode waveguide 3 (TE2 mode channel), the four...

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Abstract

The invention provides an on-chip mode division multiplexing device based on a reflection effect. The device comprises a substrate layer, an optical waveguide layer and a cladding, and the optical waveguide layer comprises N single-mode waveguides, a tapered waveguide and a wide multimode waveguide; the tail ends of the N single-mode waveguides are connected with the side surface of the tapered waveguide, and the tail end of the tapered waveguide is connected with the wide multimode waveguide; and N is a positive integer. According to the mode division multiplexing device adopting the technical scheme of the invention, single mode conversion can be realized only by optimizing the included angle and the relative position of the single-mode waveguides and the conical waveguide, and the modedivision multiplexing device has the advantages of simple structure, compact size, relatively large working bandwidth, high device preparation error tolerance and the like; and the sizes of the conical waveguide and the multimode waveguide have no strict design requirements, and the design method is simple.

Description

technical field [0001] The invention belongs to the technical field of integrated silicon photonics, in particular to an on-chip mode division multiplexing device based on reflection effect. Background technique [0002] With the rapid development of 5G intensive networking and big data services, the demand for optical modules is increasing day by day. Among them, the high integration density of optical chips has greater demand in many high-tech fields such as high-performance computers, optical communications, and quantum computing. Compared with electrical processing chips, optical chips have higher bandwidth and lower power consumption, and can use wavelength, mode, polarization and other parameters to realize multiplexing processing technology, which can effectively improve the transmission channel capacity. Among them, orthogonal spatial modes in integrated optical waveguides are considered to be an important degree of freedom to improve the data capacity of optical int...

Claims

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Application Information

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IPC IPC(8): G02B6/122G02B6/125G02B6/126G02B6/12
CPCG02B6/122G02B6/1228G02B6/125G02B6/126G02B6/12G02B2006/12088G02B2006/1209
Inventor 徐科刘英杰
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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