Arrayed Waveguide Grating Wavelength Division Multiplexer

Abstract

The invention discloses an array waveguide grating wavelength division multiplexer. The array waveguide grating wavelength division multiplexer comprises a supporting part for making two separated chip parts of an array waveguide grating chip move more stably in the relative movement process, a retractable part stretching and retracting along with changes of temperature makes the supporting part generate deformation in the direction of a cutting seam, and therefore a first substrate and a second substrate can have dislocation movement in the direction of the cutting seam, and the first chip part and the second chip part have dislocation movement in the direction of the cutting seam. Due to the supporting part, the array waveguide grating chip can be attached to the substrates and then cut, and beam-focusing coupling does not need to be performed again. The supporting part can support the movable substrates where the array waveguide grating chip is located, structural stability is enhanced, and the two separated chip parts of the array waveguide grating chip are made to move more stably in the relative movement process.

Description

technical field [0001] The invention relates to the field of optical equipment, in particular to an arrayed waveguide grating wavelength division multiplexer. Background technique [0002] Arrayed Waveguide Grating wavelength division multiplexer (AWG, Arrayed Waveguide Grating) is a device made of planar optical path technology. device) and the output waveguide array consists of five parts. The input signal is distributed to each arrayed waveguide by the input slab waveguide, and the length of the arrayed waveguide is increased by ΔL in turn, and the optical path difference is generated for the passing optical signal. Its function is equivalent to a grating, and diffraction occurs at the output position of the arrayed waveguide. Different wavelengths are diffracted to different angles and focused into different output waveguides through the output slab waveguide. [0003] However, since the ordinary AWG is made of silicon-based silicon dioxide technology, the refractive i...

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Problems solved by technology

However, this solution also has the following defects: 1. The arrayed waveguide grating wavelength division multiplexer chip is cut into two parts, and the optical coupling needs to be re-coupled. Since the optical waveguide is only a few microns thick, a very precise adjustment device is required for the light, and the adjustment The adjustment space is limited, and the coupling adjustment is very difficult

2. Since the temperature compensation rod or the temperature compensation sheet is connected to a part of the active substrate where the arrayed waveguide grating chip is located, most of them are in a suspended state, and all the force of the suspended part is borne by the temperature compensation rod or temperature compensation sheet, so that the temperature compensation rod or temperature compensation sheet is easy to Deformation occurs, and it is easily affected by external vibration and impact, which changes the position of the light and poor structural stability

3. The mechanical structure is complex, and it is easy to fail after high temperature baking and high and low temperature cycles

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