Polarization-unrelated micro ring light switching method and system

An optical switching and micro-ring technology, applied in the field of optical communication, can solve the problems of high complexity and poor versatility of polarization-independent micro-ring optical switching systems, and achieve high versatility, reduce production costs and use costs, and control complexity low effect

Inactive Publication Date: 2014-12-24
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] The purpose of the present invention is to disclose a simple and convenient polarization-independent micro-ring optical switching m

Method used

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  • Polarization-unrelated micro ring light switching method and system
  • Polarization-unrelated micro ring light switching method and system
  • Polarization-unrelated micro ring light switching method and system

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Embodiment 1

[0034] Preprocessing step: determining the wavelength λ2 of the first converted light, so as to set the wavelength λ of the pumping light.

[0035] By adjusting the waveguide parameters, it only supports the transmission of TM or TE base film. The parameters of the waveguide structure used in this embodiment are: the ridge waveguide with a ridge width of 0.4um, a ridge height of 0.45um, and an etching depth of 0.35um, and a radius of the microring in the microring optical switch is 5.3365um. At 1.55um, the effective refractive index of the TE mode is 2.773616, while that of the TM mode is 2.769295, which are slightly different.

[0036]The effective refractive index decreases with the increase of the wavelength. Through the effective refractive index method, the wavelength is from 1.5um to 1.6um to take discrete points, and the effective refractive index of the TE and TM modes changing with the wavelength is obtained. And taking the effective refractive index into the microri...

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Abstract

The invention discloses a polarization-unrelated micro ring light switching method and system, and belongs to the field of light communication. The method comprises the steps that firstly, pump light and signal light are input to a nonlinearity medium optical waveguide to generate first conversion light, the wavelength of the pump light is determined according to the wavelength of the first conversion light and the wavelength of the signal light, the polarization state of the pump light is TM or TE, and the polarization state of the first conversion light and the polarization state of the pump light are the same; the pump light and the light with the wavelength being lambda1 and the polarization state being TM or TE are filtered out, the first conversion light and the light with the wavelength being lambda1 and the polarization state being TE or TE are output to a micro ring light switch, and then light switching processing is carried out; the inverse wavelength conversion is carried out, second conversion light with the wavelength being lambda1 and the polarization state being TM or TE is generated and is the same with the signal light in power and phase position; the pump light and the first conversion light are filtered out, and the light with the wavelength being lambda1 and the polarization state being TM and TE is output. The polarization-unrelated micro ring light switching method and system are used for performing light conversion processing, the achievement universality is high, and complexity is low.

Description

technical field [0001] The invention belongs to the field of optical communication, and in particular relates to polarization-independent microring optical exchange processing. Background technique [0002] Due to the demand for chip integration, the size of the chip is getting smaller and smaller, accompanied by the difference in refractive index between the core layer and the cladding layer of the waveguide structure, which will cause serious birefringence. In such a Polarization control in waveguide structures becomes a difficult problem. When using the microring optical switch chip for optical switching, the condition for realizing resonance in the microring is: 2πR×n c =mλ, where R is the radius of the microring, n c is the effective refractive index of the optical mode in the microring, and m is the resonance order. λ is the wavelength of the optical signal. Due to the difference in the effective refractive index of different polarization states, there are differenc...

Claims

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Application Information

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IPC IPC(8): G02B6/27
Inventor 张中一武保剑文峰张鸿潮邱昆
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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