On-chip polarization independent system of integrated optical waveguide chip

An integrated optical waveguide and chip technology, applied in the direction of optical waveguide light guide, light guide, optics, etc., can solve the problems of high manufacturing process precision, low stability and reliability, unfavorable practical use, etc., to achieve strong stability and reliability, Good for integration and good process tolerance

Inactive Publication Date: 2013-11-27
ZHEJIANG UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the mode separation structure requires high manufacturing process precision, low stability and reliability, which is not conducive to the practical application in the system

Method used

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  • On-chip polarization independent system of integrated optical waveguide chip
  • On-chip polarization independent system of integrated optical waveguide chip
  • On-chip polarization independent system of integrated optical waveguide chip

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with drawings and embodiments.

[0027] Such as figure 1 As shown, the present invention includes a forward polarization conversion module 1, a Y-type waveguide splitter 2, two optical functional modules 3, two phase modulation modules 4, a Y-type waveguide combiner 5 and a reverse polarization conversion module 6; It is characterized by:

[0028] There are two orthogonal TE0 modes and TM0 modes of light input to the forward polarization conversion module 1, and the forward polarization conversion module 1 converts the TM0 mode in the input light into the TE1 mode while keeping the original TE0 mode unchanged; and then TE0 mode and TE1 mode are input into Y-type waveguide splitter 2 from forward polarization conversion module 1, and Y-type waveguide splitter 2 divides TE1 mode into two paths of +TE0 / 2 mode and -TE0 / 2 with symmetrical amplitude and opposite phase At the same time, the original TE0 mod...

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Abstract

The invention discloses an on-chip polarization independent system of an integrated optical waveguide chip. The on-chip polarization independent system of the integrated optical waveguide chip comprises a polarization converting module, a shunt/combiner, a light function module and a phase modulation module. A TM0 module is converted into a TE1 module through the polarization converting module, the TE1 module is divided into two paths of TE0 modules through the shunt, and therefore the integrated optical waveguide chip is independent of the polarization of the optical signal processing. The on-chip polarization independent system is independent of a mode separation structure based on a directional coupler, big device characteristic changes, caused by the fabrication error, of a coupling structure are avoided, and the on-chip polarization independent system has good technological allowance. The whole system is simple in structure, has high stability and reliability, is beneficial to integration and practicality and can be widely applied to a light mode multiplex communication system.

Description

technical field [0001] The invention relates to an optical waveguide device, in particular to an on-chip polarization-independent system of an integrated optical waveguide chip. Background technique [0002] With the rapid development of science and technology, the information transmission capacity in the communication field is increasing day by day, and people have higher and higher requirements for bandwidth. High-speed and large-capacity optical communication systems are an inevitable trend. How to transmit information efficiently and at high speed in optical networks has become a One of the focuses of people's research. Wavelength Division Multiplexing (WDM) technology can simultaneously transmit multiple wavelength channels on the same optical fiber, which greatly improves the spectrum utilization rate of optical fiber communication. However, in the existing DWDM (Dense Wavelength Division Multiplexing) system, the utilization rate of the wavelength channel has reached...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/126G02B6/14
Inventor 杨建义沈奥胡挺戴庭舸李宇波余辉郝寅雷江晓清
Owner ZHEJIANG UNIV
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