Temperature-insensitive integrated wavelength division multiplexer

A wavelength division multiplexer and wavelength division multiplexing technology, which is applied in the direction of wavelength division multiplexing systems, instruments, optical waveguides and light guides, etc., can solve the problems of difficult precise control and increased process, so as to improve the yield and improve production efficiency , the effect of increasing density

Inactive Publication Date: 2003-03-19
ZHEJIANG UNIV
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  • Abstract
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Problems solved by technology

This is an effective temperature compensation method, but there are also problems of increasing the process and difficult to control accurately

Method used

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  • Temperature-insensitive integrated wavelength division multiplexer
  • Temperature-insensitive integrated wavelength division multiplexer
  • Temperature-insensitive integrated wavelength division multiplexer

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0018] like figure 1 , as shown in Figure 2, the input end of the free propagation area of ​​the wavelength division multiplexing chip 4 is directly coupled with the input optical fiber 1, and a position offset compensation device is installed on the output waveguide 6 of the free transmission area, and the output fiber array is coupled on the output waveguide 6 2.

[0019] One end of the position offset compensation device is fixedly connected to the output waveguide 6, and the other end is fixed on the expansion rod 3 with thermal expansion performance, and the expansion rod 3 can drive the output waveguide 6 to move vertically.

[0020] like image 3 As shown, the position offset compensating device is input from the temperature change signal of the wavelength division multiplexing chip 4 to the signal processor 11, and the output driving signal is sent to the micro-displacement actuator 10 to drive the telescopic rod (12) without thermal expansion performance to drive the...

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Abstract

The present invention discloses an integrated wave division multiplexer which is insensitive to the temperature. It includes wave division multiplex chip, input optical fiber coupled directly with the input front end of free transmission area, output waveguide and position deviation compensating device on the output waveguide, output optical fiber array coupled on the output waveguide. The designed grating can collect the light with different wave lengthes to be at different positions of output straight line through the output waveguide, to use the structure that can separate out the output waveguide from the free transmission waveguide with partial wave grating and the position deviation compensating device to drive the output waveguide to change its position according to the temperature variation for compensating the temperature influence of wave division multiplexer.

Description

technical field [0001] The invention relates to the field of optical communication wavelength division multiplexing, in particular to a temperature-insensitive integrated planar wavelength division multiplexing device. Background technique [0002] Wavelength Division Multiplexing (WDM) technology is one of the effective methods to improve communication capabilities. It can multiplex dozens or even hundreds of wavelengths in a single fiber to meet the growing demand for bandwidth. Wavelength division multiplexing technology has been improved so that it can transmit hundreds of wavelengths of laser light, and the interval between each wavelength is 1.6, 0.8 or 0.4nm, or even 0.2nm. This technology is called Dense Wavelength Division Multiplexing (DWDM). WDM has been widely used in long-distance transmission, and has also begun to enter short-distance optical communication networks. [0003] The wavelength division multiplexer is the most critical d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/10H04J14/02
Inventor 盛钟延何赛灵
Owner ZHEJIANG UNIV
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