Periodic waveguide array raster assembly

Abstract

A periodic waveguide array raster assembly at least contains a first star coupler for dividing the optical signal into several beams, a waveguide array for making the optical signal have special , and a second star coupler for dividing optical signals with different wavelengths. Therefore, the transmission frequency band is compensated and modified to make it have flat top by using bugle shaped waveguide and deviating the optical signal from the original central shaft or using an asymmetric structure waveguide, to further be applied to various light assemblies.

Description

technical field [0001] The present invention relates to a periodic waveguide array grating assembly, especially a waveguide that utilizes a horn-shaped waveguide with a compensating central axis or an asymmetric structure, which can make the pass-band of an optical signal flat-top (flat- top) so that it can be used in various optical components. Background technique [0002] In the conventional waveguide array grating component, the waveguide array and the output waveguide are arranged along the central axis. However, for the periodic waveguide array grating component, this arrangement will cause the problem of flattened transmission band deformation. [0003] Used periodic waveguide array grating component, its main structure is made of a first star coupler (star coupler) 61, a waveguide array 62 and a second star coupler 63 (as Figure 7A and Figure 7B shown). An optical signal is input from an input waveguide 611, and after passing through a first slab waveguide 612, t...

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Problems solved by technology

However, making the channel closer to the middle deviate from the original central axis 8 at a larger angle, while the outer channel deviates from the original central axis 8 at a smaller angle, will make the channels of the waveguide array 62 interleaved with each other, and then make the overall structure become complex

[0006] Therefore, in the process of flattening the 3dB uneven transmission frequency band, although an optical attenuator can be used to solve it, it will increase a lot of cost, and the method of generating optical coupling loss by deviating from the original central axis will make the overall structure become complex

Therefore, the general users cannot meet the needs of users in actual use

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