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Reflection-free optical power divider based on impedance matching medium

An impedance matching and optical power splitter technology, applied in the direction of light guide, optics, instruments, etc., can solve the problems of increasing loss, lengthening device size, uneven power division, etc., and achieve the effect of reducing loss, improving integration and low loss

Inactive Publication Date: 2016-02-24
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the PLC-type optical waveguide realizes T-shaped branching and 90° turning, the loss will be greatly increased due to large-angle bending. If the loss is to be reduced, the longitudinal slow-change structure must be adopted to increase the size of the device.
In addition, some errors are inevitably introduced in the processing and production, resulting in uneven power distribution

Method used

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  • Reflection-free optical power divider based on impedance matching medium
  • Reflection-free optical power divider based on impedance matching medium
  • Reflection-free optical power divider based on impedance matching medium

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0031] Such as figure 1 , 2 As shown in and 3, the present invention provides a non-reflective optical power splitter based on an impedance matching medium, the optical power splitter includes N-1 T-shaped branching units 1, N is a natural number greater than or equal to 2, and the preceding The output end of the first-stage T-type shunt unit 1 is connected to the input end of the next-stage T-type shunt unit 1; the T-type shunt unit 1 is made of impedance-matched dielectric material to realize non-reflection, ultra-low loss T-type shunt ; There is a right-angle turning unit 2 between the output end of the T-shaped branching unit 1 of the previous stage and the input end of the T-shaped branching unit 1 of the latter stage. Low-loss, no-reflection right-angle corners.

[0032] The continuous impedance function of the impedance matching dielectri...

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Abstract

The invention discloses a reflection-free optical power divider based on an impedance matching medium. The optical power divider comprises N-1 T branch units, N is a natural number greater than or equal to 2, and the output end of the former-stage T branch unit is connected with the input end of the latter-stage T branch unit. The optical power divider is characterized in that the T branch units are composed of an impedance matching medium, and the T branch units are reflection-free and are of ultra-low loss. A right-angle turn unit is arranged between the output end of the former-stage T branch unit is connected with and the input end of the latter-stage T branch unit. The right-angle turn units are composed of an impedance matching medium, and are of ultra-low loss and are reflection-free. The reflection-free optical power divider is based on an impedance matching medium, the medium can realize impedance matching between different materials through special design, the impedance can be adjusted according to the demand, and therefore, a reflection-free effect is achieved.

Description

technical field [0001] The invention relates to a non-reflective optical power splitter based on an impedance matching medium, belonging to the technical field of integrated photonic devices. Background technique [0002] The 1×N optical power splitter is a key passive component connecting the optical line terminal (OLT) and the optical network terminal (ONU) in the fiber-to-the-home passive access network. Early power splitters include optical fiber type power splitters and lens type power splitters, which have disadvantages such as large size, poor reliability, uneven power distribution, difficult integration, difficult adjustment of power distribution, and few shunts. With the development of PLC technology, PLC type power divider appeared. PLC type power divider is packaged by PLC chip and input and output fiber array (FA). The PLC-type optical power splitter made by PLC technology has wide working bandwidth, low loss, good uniformity, small size, high reliability and g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/125
CPCG02B6/125
Inventor 孙小菡蒋卫锋曹军
Owner SOUTHEAST UNIV