Z-shaped multiplexer for wavelength divisions

A technology of wavelength division and multiplexer, which is applied in the direction of instrument, optical waveguide coupling, light guide, etc., can solve the problems of frequency band center wavelength shift and optical loss, etc., and achieve the effect of reducing frequency band center wavelength shift and reducing optical loss

Inactive Publication Date: 2005-10-05
BROWAVE CORP
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

However, the spacer 13 can only avoid the length change of the collimator due to thermal expansion and contraction, but cannot avoid the tilt angle between the collimator and the filter.
Therefore, when the adhesive 14 expands with heat and contracts with cold, causing a deflection angle between the collimator and the filter, it will cause problems such as band center wavelength shift and optical loss.

Method used

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  • Z-shaped multiplexer for wavelength divisions
  • Z-shaped multiplexer for wavelength divisions
  • Z-shaped multiplexer for wavelength divisions

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Embodiment Construction

[0022] figure 2 It is the top view of the zigzag wavelength division multiplexer of the present invention. like figure 2 As shown, the zigzag wavelength division multiplexer of the present invention includes an intermediate block (intermediate block) 20, an input end 30 and a plurality of output ends 40a, 40b, 40c, 40d; wherein the input end 30 and the plurality of output ends 40a , 40b, 40c, 40d are arranged on the two sides 20a, 20b of the middle block 20 respectively. After a multi-channel beam (multi-channel light) enters the middle block 20 from the input end 30, a first-channel beam (first-channel beam) λ1 is output through a first output end 40a, and a second output end 40b outputs a second-channel beam (second-channel beam) λ2, outputs a third-channel beam (third-channel beam) λ3 through a third output terminal 40c, and outputs a remaining waveband beam through a fourth output terminal 40d (residual-channel beam) λ4.

[0023] Figure 3A is a perspective view of ...

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Abstract

A Z shape wavelength split multiplex machine includes a middle block, an input end and multiple output ends, in which, the input end has a first casing tube and a collimator set in the casing tube. Every output end has a second casing tube, a filter plate and a collimator and the filter plate and the collimator are in the second casing tube. This invented Z shape wavelength splitter can avoid deflection angle generated between the collimator and filter plate to reduce wavelength deflection at frequency band center resulted from temperature change, and reduce cloage of refractive transition lens and glass casing rings.

Description

technical field [0001] The invention relates to a wavelength division multiplexer, in particular to a zigzag wavelength division multiplexer. Background technique [0002] Figure 1A A perspective view of a known wavelength division multiplexer is briefly shown. U.S. Patent No. 5,859,717 discloses a known "Z" shape wavelength division multiplexer (zigzag wavelength division multiplexer), such as Figure 1A shown. The known zigzag wavelength division multiplexer has a housing 1, and a support frame 2 and a first 3, second 4, third 5, fourth 6, fifth 7 and the first 3 are arranged in the housing 1. Six collimators8. A first 9, a second 10, a third 11 and a fourth filter 12 are arranged in the support frame 2, and the multi-band collimated light beam (multi-channel collimated light) emitted by the first collimator 3 generally takes an incident angle incident on the first filter 9. Generally, the angle of incidence is in the range of about 5° to 10° and preferably 7°. In ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/26G02B6/293G02F1/19
Inventor 黄裕文林士强杨弘光
Owner BROWAVE CORP
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