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Adjustable luminous power divider

An optical power divider and optical power distribution technology, applied in the field of optical communication, can solve the problems of limited application value, small adjustable range, high polarization correlation, and achieve the effect of flexible design and configuration of optical networks

Inactive Publication Date: 2004-09-15
GUANGXUN SCI & TECH WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the adjustable range is small, the polarization correlation is high, and the control precision is low.
Therefore, its application value is very limited

Method used

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  • Adjustable luminous power divider
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  • Adjustable luminous power divider

Examples

Experimental program
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Effect test

Embodiment Construction

[0024] The present invention has two types of application modes, one is for linearly polarized light power distribution, and the other is for arbitrary polarization state light power distribution.

[0025] figure 1 It is an embodiment of the linearly polarized light power splitter, which is composed of a polarization maintaining collimator, a liquid crystal cell (LC), a crystal beam splitter, a roof prism, and a dual-core collimator. The linearly polarized light exits from the polarization-maintaining collimator and passes through the liquid crystal (LC) cell. The liquid crystal (LC) cell changes the polarization state of the incident light under the drive of a voltage, and then the light is split by a walk-off crystal. Two parallel beams of light, under the refraction of the roof prism, the two beams cross at one point and are coupled into the two paths of the dual-core collimator. There are two mechanisms for the liquid crystal cell to change the polarization state of light: r...

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PUM

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Abstract

The distributor comprises an input end, two output ends and part for distributing optical power. Micro optical fiber collimator is adopted at input end and output end. Inputted polarized light though component capable of changing polarization state adjusts polarization state of inputted light, which then pass through polarization walk off crystal and are coupled to output end. One scheme is that inputted light is polarized light; liquid crystal unit or other component capable of changing polarization state changes polarization state of inputted light; then, split polarized lights are coupled by walk off crystal or wallaston prism to output end. Another scheme is that input light is non polarized light; the walk off crystal and wave plate changes non polarized light to polarized light; component capable of changing polarization state changes polarization state of inputted light; then, split polarized lights are coupled by walk off crystal or wallaston prism to output end.

Description

Technical field [0001] The invention relates to an adjustable optical power distributor, which belongs to the technical field of optical communication. Background technique [0002] Optical power splitters based on fiber couplers have achieved rapid development in recent years. Mainly due to the gradual popularization of fiber optic cable television (CATV) and fiber to the home (FTTH). Its market demand is increasing. According to RHK's forecast, the market size of optical fiber couplers will increase at an annual rate of more than 100% after 2003. Seeing the huge potential of the optical power splitter market, many manufacturers who originally engaged in planar waveguide devices have also actively carried out research and development and market development of similar devices. Its performance and working principle are basically similar to those of fiber optic devices. Generally, fiber-optic or waveguide-type devices can only provide a fixed splitting ratio. With the development o...

Claims

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Application Information

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IPC IPC(8): G02B27/10H04B10/293
Inventor 刘文吴克宇罗勇
Owner GUANGXUN SCI & TECH WUHAN