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Adjustable light power distribution method based on nanometer grating and distributor thereof

An optical power splitter and optical power distribution technology, which is applied in the field of optical communication, can solve the problems of limited application value, small tunable range, and high degree of polarization correlation, and achieve the effects of fewer components, favorable promotion and application, and simplified structure

Inactive Publication Date: 2007-08-15
GUANGXUN SCI & TECH WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this method is that the tunable range is small, the polarization correlation is high, and the control accuracy is low, so its application value is actually very limited.

Method used

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  • Adjustable light power distribution method based on nanometer grating and distributor thereof
  • Adjustable light power distribution method based on nanometer grating and distributor thereof

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Embodiment Construction

[0023] specific implementation

[0024] Figure 1 shows the basic functions of existing nanogratings. For visible light and near-infrared light, when the processing capability of the grating is increased from the micron level to the nanometer level, the familiar light diffraction effect will completely disappear at this time. This nanoscale grating is insensitive to the wavelength of the incident light, but very sensitive to the polarization state of the incident light. One of the basic functions of the nano-grating is to split the incident unpolarized light into two beams of polarized light which are transmitted and reflected. The vibrating planes of the two beams of polarized light are respectively parallel to or perpendicular to the directions of the nano-grating bars.

[0025] Fig. 2 is the structure of a polarization-independent adjustable optical power splitter in the prior art, which consists of a single-core collimator, a walk-off unit (birefringent crystal), a half-w...

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Abstract

This invention relates to adjusting light power allotting method and its allotter based on nanometer grating, which is bias polarization splitter to the incidence non-bias light and to the following two beams of polarization light polarization apparatus; after and before splitting, making the reflection beam and transparent beam polarization surface for rotation to change the splitting light.

Description

technical field [0001] The invention relates to an adjustable optical power divider, which belongs to the technical field of optical communication. Background technique [0002] Optical power splitters based on fiber optic couplers have achieved considerable development in recent years, mainly due to the gradual popularization and application of fiber optic CATV and fiber to the home (FTTH). Its market demand is increasing. According to the analysis 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 develo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/10G02B6/26H04B10/12
Inventor 刘文曾云陈龙周力兵
Owner GUANGXUN SCI & TECH WUHAN