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Silicon-based integrated polarization modulation device

A polarization modulation, silicon-based technology, applied in optics, instruments, nonlinear optics, etc., can solve the problems of large volume, difficult to integrate, unable to obtain polarized light, etc., and achieve the effect of small overall volume, simple polarization modulation, and low cost.

Pending Publication Date: 2019-07-02
QUANTUMCTEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the use of multiple independent components, the existing polarization modulation devices are bulky and difficult to integrate, and usually only obtain circularly polarized light, and cannot obtain arbitrary polarized light

Method used

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  • Silicon-based integrated polarization modulation device
  • Silicon-based integrated polarization modulation device
  • Silicon-based integrated polarization modulation device

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Such as figure 2 As shown, the silicon-based integrated polarization modulation device of this embodiment includes a polarization beam splitter 10 , a polarization beam combiner 20 and a silicon-based phase shifter 30 .

[0019] One output end of the polarization beam splitter 10 is connected to the polarization beam combiner 20 through a silicon-based phase shifter 30 , and the other is directly connected to the polarization beam combiner 20 .

[0020] The optical path between the polarization beam splitter 10, the polarization beam combiner 20 and the silicon-based phase shifter 30 forms an optical connection channel through a planar optical waveguide. The planar optical waveguide corresponds to a mode in which an optical signal is transmitted.

[0021] After the signal light is processed by the polarization beam splitter 10, it is divided into two signal lights whose polarizations are perpendicular to each other. One of the signal lights is modulated by the silicon...

Embodiment 2

[0023] The silicon-based polarization modulation device in the first embodiment above cannot obtain elliptically polarized light, and this embodiment further improves the above-mentioned silicon-based polarization modulation device.

[0024] Such as image 3 As shown, the silicon-based integrated polarization modulation device of this embodiment includes a polarization beam splitter 12, an optical directional coupler 22, a polarization beam combiner 32, and three silicon-based phase shifters.

[0025] The output end of the polarization beam splitter 12 is respectively connected to the optical directional coupler 22 through two silicon-based phase shifters, and the output end of the optical directional coupler 22 is connected to the polarization beam combiner 32 through a silicon-based phase shifter. The other path is directly connected to the polarization beam combiner 32 .

[0026] The optical path between the polarization beam splitter 12, the optical directional coupler 22...

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PUM

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Abstract

The invention discloses a silicon-based integrated polarization modulation device, which comprises a polarization beam splitter, a polarization beam combiner and a silicon-based phase shifter. The polarization beam splitter and the polarization beam combiner are connected through the silicon-based phase shifter. The signal light processed by the polarization beam splitter is modulated by the silicon-based phase shifter and then, enters the polarization beam combiner. The silicon-based integrated polarization modulation device can obtain any linearly polarized light and circularly polarized light, and can also obtain any elliptically polarized light by adding an optical directional coupler. The advantages are that the silicon-based integrated polarization modulation device can obtain any linearly polarized light and circularly polarized light, and can also obtain any elliptically polarized light by adding the optical directional coupler; and the silicon-based integrated polarization modulation device is small in overall size and low in cost, is compatible with the existing CMOS technology, is simple in polarization modulation and is high in rate.

Description

technical field [0001] The invention relates to a silicon-based integrated optical device, more particularly to a silicon-based polarization modulation device. Background technique [0002] see figure 1 As shown, it is a structural schematic diagram of an existing commonly used polarization modulation device. The existing polarization modulation device uses discrete piezoelectric ceramics, birefringent crystals and other materials, including a coupling device 2, a polarization optical device 3, a piezoelectric ceramic component 4, a coupling The device 5 and the modulation controller 7, the coupling device 2, the polarization optical device 3, the piezoelectric ceramic assembly 4, and the coupling device 5 are placed in order, and the coupling device 2, the polarization optical device 3, the piezoelectric ceramic assembly 4, and the coupling device 5 The central axis is on a straight line, and the modulation controller 7 is connected to the piezoelectric ceramic assembly 4 ...

Claims

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Application Information

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IPC IPC(8): G02F1/01G02B27/28
CPCG02F1/0136G02B27/283G02B27/286
Inventor 龚攀刘建宏
Owner QUANTUMCTEK
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