Two-dimensional photon crystal power separator

A technology of two-dimensional photonic crystals and power splitters, which can be used in instruments, optics, light guides, etc., and can solve problems such as single

Inactive Publication Date: 2005-04-27
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current two-dimensional photonic crystal power splitters only have two types: the 1×2 power splitter based on the Y-shaped branch structure

Method used

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  • Two-dimensional photon crystal power separator
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Experimental program
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Embodiment 1

[0021] The invention comprises an input waveguide (1), at least two output waveguides (2), (6), at least one coupling region (7) and a bent waveguide (9), wherein the coupling region (7) is arranged on the input waveguide (1 ) and the output waveguide (2), (6), the entrance port of the coupling area (7) is connected with the input waveguide (1), and the exit port of the coupling area (7) passes through the bending waveguide (9) and the output waveguide respectively (2) and (6) are connected to form a 1×2 power splitter.

Embodiment 2

[0023] On the basis that Embodiment 1 has two output waveguides (2), (6), the present invention is also provided with an output waveguide (4) in the forward propagation direction of the straight waveguide (1) of the above-mentioned input waveguide (1), forming a 1 × 3 power splitters, such as figure 2 shown.

Embodiment 3

[0025] On the basis that Embodiment 1 has two output waveguides (2), (6), the present invention is also provided with a coupling area (8) behind the coupling area (7), and the entrance port of the coupling area (8) is connected to the input The waveguides (1) are connected, and the exit ends of the coupling area (8) are respectively connected to the output waveguides (3) and (5) through the bent waveguides (9), forming a 1×4 power splitter.

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Abstract

The present invention relates to one kind of 2D photon crystal power separator capable of being used in integrated optical path and operating to several light wave signals simultaneously. It includes one input waveguide, several output waveguides and coupling area of the 2D photon crystal power separator to connect the input waveguide and the output waveguides. The coupling area has input connected to the input waveguide and output connected to the output waveguides via bending waveguide. Altering the length of the middle coupling area can realize the 1X2, 1X3, 1X4 and 1X5 power separation of light signal, and perform the filtering and selective output of light signal in different wavelength. The present invention is based on 2D silicon base photon crystal structure, so that the present invention has the advantages of small size, low loss, simple making process and other advantages, and is suitable for new generation of large scale light integration and light communication.

Description

1. Technical field [0001] The invention relates to a device that can be used in an integrated optical system and performs power separation and filtering on light wave signals. It belongs to the innovative technology of optical power splitter. 2. Technical Background [0002] As an optical passive device, the optical power splitter plays a very important and key role in integrated optical circuits and all-optical communication systems. Traditional optical power splitters are made of optical fibers or micron-scale optical waveguides (such as ridge optical waveguides). Therefore, the transmission loss of light and the size of the device are relatively large, which is not suitable for high-density miniaturization of optoelectronic devices. , especially the new generation of nanophotonic integration. Photonic crystal waveguide devices are very suitable for nanophotonic integration due to their very small transmission loss and device size. However, the current two-dimensional p...

Claims

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Application Information

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IPC IPC(8): G02B6/00G02B6/24
Inventor 李宝军赵玉周
Owner SUN YAT SEN UNIV
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