Bidirectional arrayed waveguide grating and application device thereof
A technology of arrayed waveguide grating and waveguide grating, which is applied in the directions of optical waveguide light guide, light guide, optics, etc., can solve the problems of complex process, difficult to achieve environmental consistency, etc., and achieve the effect of simple process and cost saving.
Inactive Publication Date: 2012-05-23
SHENZHEN NEOPHOTONICS TECH
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[0004] Aiming at the disadvantages of using two AWGs to achieve environmental consistency and complex processes in the prior art, a new type of bidirectional AWG and its application is proposed
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[0012] The preferred embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0013] Such as figure 1 Shown is the structural diagram of most AWG100 in the prior art, AWG100 includes input waveguide 101, output waveguide 105, arrayed waveguide grating 103 and two slab waveguides 102 and 104 as star couplers. When a composite optical signal passes through the input waveguide 101 and enters the slab waveguide 102, Gaussian far-field diffraction occurs, and the optical signal enters the arrayed waveguide grating 103 in equal phase. Since there is a fixed optical path difference dL between adjacent arrayed waveguide gratings, so that The optical signals transmitted in each arrayed waveguide grating 103 generate a certain phase difference. In this way, beams of the same wavelength with different phases output from the end of the arrayed waveguide grating 103 will be focused by interference at the end of the slab wavegui...
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The invention provides a bidirectional arrayed waveguide grating (AWG), which comprises an input waveguide, an output waveguide, an arrayed waveguide grating and a pair of slab waveguides. Each of the input and output waveguides is provided with a single channel and a group of optical signal channels. A composite optical signal is input from the single channel of the input waveguide and de-multiplexed into a plurality of single-wave optical signals by the arrayed waveguide grating and the slab waveguides, and the plurality of single-wave optical signals are output from the plurality of channels of the output waveguide. The plurality of single-wave optical signals are input from the plurality of channels of the input waveguide and multiplexed into the composite optical signal by the arrayed waveguide grating and the slab waveguides, and the composite optical signal is output from the single channel of the output waveguide. The input and output waveguides can be reversibly designated, and the optical signals in input and output channels for realizing multiplexing and de-multiplexing functions are reversible. By the invention, the optical multiplexing and de-multiplexing functions of more channels and narrower intervals are realized by combining the bidirectional AWG and a comb filter.
Description
technical field [0001] The invention relates to an arrayed waveguide grating and its application device, in particular to an arrayed waveguide grating capable of bidirectional multiplexing and its application device. Background technique [0002] At present, most arrayed waveguide grating (Arranged Waveguide Grating, AWG) products are single-channel input, multi-channel output or multi-channel input, single-channel output to realize the demultiplexing or multiplexing function of optical communication wavelength. In the application of optical communication systems, the optical multiplexing and demultiplexing functions are often used in pairs, especially in some chassis-type products, the optical multiplexing and demultiplexing modules are often assembled in one chassis. This kind of chassis-type product usually puts 2 AWG products in a chassis, one is used as optical multiplexing function, and the other is used as demultiplexing function. In addition, AWG is also used in sys...
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IPC IPC(8): G02B6/12G02B6/293
Inventor 陈贵明
Owner SHENZHEN NEOPHOTONICS TECH