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Design method and device for athermal awg

A design method and preset threshold technology, applied in the field of optical communication, can solve problems such as increasing the difficulty of parts processing and assembly

Active Publication Date: 2022-07-05
GUANGXUN SCI & TECH WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this structure, whether the rod acts in different temperature ranges mainly depends on the contact and non-contact of the structure. Therefore, the processing and assembly of the structure are required to have high precision, usually at the sub-micron level. These factors increase these Parts processing and assembly difficulty of the scheme

Method used

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  • Design method and device for athermal awg
  • Design method and device for athermal awg
  • Design method and device for athermal awg

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiments of the present invention provide a heat-free AWG device, such as figure 1 , figure 2 and image 3 As shown, the input waveguide 1, the input coupler 2, the transmission waveguide array 3, the output coupler 4, the wavelength compensation lens 5 and the output waveguide array 6 are sequentially coupled to each other. Specifically:

[0044]After the input light completes WDM and exits from the output curved surface 4-1 of the output coupler 4, it is incident on the light entrance surface 5-1 of the wavelength compensation lens 5;

[0045] The light emitting surface 5-2 of the wavelength compensation lens 5 is provided with a preset number of lens curved surface arrays; wherein, the light of the same wavelength is still irradiated on the light emitting surface 5 of the wavelength compensation lens 5 when the light path is shifted at different temperatures. After being converged at the same lens curved surface on -2, it is emitted to a designated output waveg...

Embodiment 2

[0050] The embodiment of the present invention also provides a method for designing an athermal AWG, in which the AWG is built in the order of the input waveguide 1, the input coupler 2, the transmission waveguide array 3 and the output coupler 4 in sequence, as shown in the following example: Figure 4 The method includes:

[0051] In step 201, a test optical signal is input into the input waveguide 1, wherein the test optical signal is formed by multiplexing a preset number of wavelengths.

[0052] In step 202 , according to one or more preset temperatures, the AWG is adjusted to operate at the corresponding one or more temperatures, and the photonic signals of each output port of the output coupler 4 are collected respectively.

[0053] In step 203, according to the position switching of the optical signal of each output port of the output coupler 4 at each temperature, the lens in the lens curved surface array located on 5-2 of the light-emitting surface in the wavelength ...

Embodiment 3

[0064] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, but not all, embodiments of the present invention.

[0065] like figure 1 As shown, an athermal AWG design method includes input waveguide 1 , input coupler 2 , transmission waveguide array 3 , output coupler 4 , wavelength compensation lens 5 , and output waveguide array 6 .

[0066] specific as image 3 As shown, when the ambient temperature changes, the output wavelength will be displaced at the output surface 4-1 of the output coupler. In the embodiment of the present invention, it is ensured that when one wavelength drifts within the temperature range, the output curved surface 4-1 of the output coupler will not coincide with the output position of another wavelength. In the implementation process, as long as t...

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Abstract

The invention relates to the technical field of optical communication, and provides a design method and device of an athermal AWG. The device includes an input waveguide 1, an input coupler 2, a transmission waveguide array 3, an output coupler 4, a wavelength compensation lens 5 and an output waveguide array 6 that are sequentially coupled to each other. After the output curved surface 4-1 is emitted, it is incident on the light entrance surface 5-1 of the wavelength compensation lens 5; the light exit surface 5-2 of the wavelength compensation lens 5 is provided with a preset number of lens curved surface arrays; wherein, the light of the same wavelength is In the case of optical path deviation at different temperatures, it is still irradiated on the same lens curved surface on the light-emitting surface 5-2 of the wavelength compensation lens 5, and then emitted into the corresponding output waveguide after being converged. The invention solves the problem of temperature dependence of the optical waveguide integrated device based on PLC technology, and the related reliability and stability problems.

Description

【Technical field】 [0001] The present invention relates to the technical field of optical communication, in particular to a design method and device of an athermal AWG. 【Background technique】 [0002] DWDM technology is an important means to expand optical fiber communication capacity. AWG (Dense Wavelength Division Multiplexing / Demultiplexer) is widely used in backbone network, transmission network and access network because of its large number of channels, small size, high integration and low price per channel. has been widely used. [0003] The central wavelength of AWG is very sensitive to temperature. In order to keep the wavelength stable, the heated AWG uses a heating method to heat the AWG chip to a certain temperature of 68 to 85 degrees (higher than the operating temperature, only needs to be heated) to stabilize. Therefore, in the whole working temperature range (-5 to 65 degrees), the AWG can maintain a constant passband wavelength. The athermal AWG gets rid of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/12
CPCG02B6/12026G02B6/12009
Inventor 赵明璐吴凡张冀李迪徐晓辉
Owner GUANGXUN SCI & TECH WUHAN