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PLZT film array-based wavelength selection device and method

A wavelength selection and array technology, applied in the field of optical communication, can solve the problems of difficult system performance stability, insufficient device performance, low system complexity, etc., to achieve improved diffraction efficiency, short response time, and high optical transmittance. Effect

Active Publication Date: 2017-01-04
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The port number of MEMS technology has good scalability, but because it is based on the mechanical movement of the plane mirror, it is difficult to maintain the stability of the system performance, the power consumption is large, and the response time is long; the cost of LC is low, the system complexity is low, and the system performance is reliable , but the insertion loss is large, the extinction ratio is not high enough, and the response time is long; LCOS has good passband characteristics, but the optical path calibration is difficult, the device performance is not stable enough, and is greatly affected by temperature

Method used

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  • PLZT film array-based wavelength selection device and method
  • PLZT film array-based wavelength selection device and method
  • PLZT film array-based wavelength selection device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Embodiment one, a kind of wavelength selection device based on PLZT film array, will combine below figure 1 A wavelength selection device based on a PLZT thin film array in this embodiment is introduced in detail.

[0043] like figure 1 Shown, a kind of wavelength selection device based on PLZT film array, comprises beam input assembly 1, polarization beam splitter 2, cylindrical lens assembly, diffraction grating assembly 4, PLZT film array 5 and beam output assembly 6, described diffraction grating assembly 4 are arranged at intervals on one side of the cylindrical lens assembly, and the beam input assembly 1, polarizing beam splitter 2, PLZT film array 5 and beam output assembly 6 are arranged at intervals on the other side of the cylindrical lens assembly, and the Both the beam input assembly 1 and the beam output assembly 6 are located on the side of the polarizing beam splitter 2 away from the cylindrical lens assembly.

[0044] The beam input assembly 1 is used...

Embodiment 2

[0054] Embodiment two, a kind of wavelength selection method based on PLZT film array, will combine below image 3 A wavelength selection method based on a PLZT thin film array in this embodiment is introduced in detail.

[0055] like image 3 Shown, a kind of wavelength selection method based on PLZT film array, comprises the following steps:

[0056] Step 1: After the beams formed by optical signals of different wavelengths are incident from the beam input component 1, they are processed by the polarizing beam splitter 2 to form a linearly polarized beam that passes through the cylindrical lens component and propagates to the diffraction grating component 4;

[0057] Step 2: The polarized light is diffracted by the diffraction grating assembly 4 and then passes through the cylindrical lens assembly to reach the PLZT film array 5;

[0058] Step 3: After the diffracted linearly polarized light beam is modulated by the PLZT film array 5, at least one path of light of a specif...

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Abstract

The invention relates to a PLZT film array-based wavelength selection device and a PLZT film array-based wavelength selection method. The PLZT film array-based wavelength selection device comprises a light beam input component, a polarization beam splitter, a cylindrical lens component, a diffraction grating component, a PLZT film array and a light beam output component, wherein the diffraction grating component is arranged on one side of the cylindrical lens component at intervals; the light beam input component, the polarization beam splitter, the PLZT film array and the light beam output component are arranged on the other side of the cylindrical lens component at intervals; and the light beam input component and the light beam output component are positioned on the side, far away from the cylindrical lens component, of the polarization beam splitter. According to the device and the method, optical signals with different wavelength can be output from corresponding output ports by the PLZT film array, and the PLZT film material has high electro-optic coefficient and high optical transmittance, so the response time is short, insertion loss is small, light paths are simplified and cost is reduced, and the device and the method have the advantages of low working voltage, high speed, high heat stability and the like.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a wavelength selection device and method based on a PLZT thin film array. Background technique [0002] In recent years, wavelength division multiplexing (Wavelength division Multiplexing, WDM) technology has been more and more widely used in optical transmission networks at all levels, and reconfigurable optical add / drop multiplexer (Reconfigurable Add / Drop multiplexer, ROADM) The core optical switching equipment can configure any wavelength on any port. The wavelength selective switch (WSS), as the core device of the third-generation ROADM system, is superior in functional diversity and stability, and is gradually being widely used. [0003] At present, the realization technology of wavelength selective switch can be divided into three kinds: (1) WSS using micro-electromechanical system (MEMS); (2) WSS using liquid crystal technology (LC); (3) using liquid crysta...

Claims

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Application Information

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IPC IPC(8): G02B27/42
CPCG02B27/4244G02B27/4261
Inventor 徐建梅龙廉骏黄灿
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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