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Three-dimensional vertical light-coupling mode conversion-isolation hybrid device

A technology of vertical coupling and composite device, applied in the field of optical communication, can solve the problems of unproposed, large size, difficult process manufacturing, etc., and achieve the effect of convenient three-dimensional integration, small device size, and simple process

Inactive Publication Date: 2017-06-13
JILIN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, its structure is complex, the performance requirements of magneto-optical materials are high, and the process is difficult to manufacture; because most of them use permanent magnets, the size is large; and it can only achieve optical isolation.
At present, devices that can simultaneously realize optical isolation and conversion between different modes have not been proposed

Method used

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  • Three-dimensional vertical light-coupling mode conversion-isolation hybrid device
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  • Three-dimensional vertical light-coupling mode conversion-isolation hybrid device

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Embodiment 1

[0030] The optical mode conversion-isolation composite device and its manufacturing process involved in the present invention are as follows: Figure 5 As shown, the specific steps are as follows:

[0031] 1) Choose silicon as the substrate, first wash the silicon wafer with acetone solution to remove organic impurities on the surface of the silicon wafer, then wash with ethanol solution to remove the residual acetone from the previous cleaning step, and rinse repeatedly with deionized water to remove the residual ethanol on the surface of the silicon wafer . A PMMA-GMA cladding layer with a thickness of 4 μm was evenly spin-coated on the cleaned silicon substrate (rotating speed 3000 r / min, refractive index 1.49), and heated and cured at 120° C. for 120 minutes.

[0032] 2) Spin-coated core layer PMMA-GMA core layer material: Spin-coat a PMMA-GMA core layer with a thickness of 3.4 μm on the spin-coated PMMA-GMA cladding layer (rotating speed 3500r / min, refractive index 1.51)...

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Abstract

The invention discloses a three-dimensional vertical light-coupling mode conversion-isolation hybrid device and a preparation method thereof and belongs to the technical field of optical communication techniques. The three-dimensional vertical light-coupling mode conversion-isolation hybrid device comprises a coating layer, an upper core layer waveguide and a lower core layer waveguide, wherein the upper core layer waveguide and the lower core layer waveguide are coated with the coating layer. The refractive indexes of the coating layer, the upper core layer waveguide and the lower core layer waveguide are n, n1 and n2 respectively, wherein n1 > n2 > n, and the cross section sizes of the upper core layer waveguide and the lower core layer waveguide are same and are determined by adopting an effective refractive index method. The upper core layer waveguide and the lower core layer waveguide are of X-section vertical coupling structures, and the best vertical distance and the angle between the core layer waveguides are determined through a beam propagation method. The device can achieve light conversion in different modes, is similar to a diode in a circuit in function and can achieve one-way light guiding, the maximum isolation degree is greater than 58 Db, and the mode switching efficiency at the position of wave length of 1550 nm is higher than 99.9%.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and in particular relates to a three-dimensional vertical coupling optical mode conversion-isolation composite device. Background technique [0002] Optical communication technology using optical fiber or waveguide as the transmission medium is a necessary means to meet the current rapid growth of communication and data transmission. Compared with traditional communication systems, optical fiber and waveguide communication systems have the advantages of wide frequency band, large transmission capacity, small transmission loss, low bit error rate and strong anti-electromagnetic interference ability. In particular, the application of wavelength division multiplexing technology (WDM) in the optical network has effectively realized the expansion of the optical transmission network. [0003] The combination of optical amplifier and wavelength division multiplexing technology has a simpl...

Claims

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Application Information

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IPC IPC(8): G02B6/12G02B6/122G02B6/14
CPCG02B6/12002G02B6/122G02B6/14G02B2006/12069G02B2006/12152
Inventor 孙小强何国冰张大明王菲姬兰婷陈长鸣衣云骥王希斌
Owner JILIN UNIV