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Adjustable luminous power divider

A technology of optical power splitter and polarization beam splitter, which is applied in the field of optical communication, can solve the problems of limited application value, low control precision, small adjustable range, etc., and achieve the effect of flexible design and configuration of optical network

Inactive Publication Date: 2008-10-01
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

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Experimental program
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Effect test

Embodiment Construction

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

[0025] figure 1 It is an embodiment of a linearly polarized optical power splitter, which consists of a collimator 1, a liquid crystal unit (LC) 2, a crystal polarization beam splitter 3, a roof prism 4, and a double-core collimator 5. Linearly polarized light A emerges from the collimator, passes through the liquid crystal (LC) unit 2, and the liquid crystal (LC) unit 2 changes the polarization state of the incident light under the drive of voltage, and then passes through the crystal polarization beam splitter 3 (walk-off crystal) The light is divided into two parallel beams of polarized light S, P, and the two beams of polarized light are refracted by the roof prism 4 at one point and coupled into the two outputs B1 and B2 of the dual-core collimator 5 . There...

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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 splitter, which belongs to the technical field of optical communication. Background technique [0002] Optical power splitters based on fiber optic couplers have made great progress in recent years. Mainly due to the gradual popularization and application of fiber-optic cable television (CATV) and fiber-to-the-home (FTTH). Its market demand is increasing. According to the forecast of RHK, the market size of fiber optic couplers will increase by more than 100% every year 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, optical fiber or waveguide devices can only provide a fixed splitting ratio. With the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/12G02B27/10H04B10/293
Inventor 刘文吴克宇罗勇
Owner GUANGXUN SCI & TECH WUHAN