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Method for preparing photon crystal optical splitter

A technology of photonic crystals and beam splitters, applied in the fields of instruments, optics, nonlinear optics, etc., can solve the problems of complex processing of beam splitters and insufficient volume, and achieve the effects of easy acquisition, good effect, and good periodic structure

Inactive Publication Date: 2005-09-21
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention overcomes the main disadvantages of the prior art that the processing of the beam splitter is complicated and the volume is not small enough to limit its application, thereby providing a preparation method of the beam splitter

Method used

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  • Method for preparing photon crystal optical splitter
  • Method for preparing photon crystal optical splitter
  • Method for preparing photon crystal optical splitter

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The preparation of a 3μm diameter polystyrene sphere photonic crystal spectrometer includes the following steps:

[0028] 1. Preparation of the sample cell

[0029] Such as figure 1 As shown, the sample cell is prepared by bonding upper and lower coverslips. A circular hole 3 with a diameter of 8 mm is pre-punched on the upper cover glass 1, and the edge of the hole is smoothed. After carefully cleaning the upper and lower coverslips, apply an appropriate amount of superglue 4 around the perforated upper cover glass 1 and carefully cover it on the other clean lower cover glass that has not been perforated On sheet 2, under capillary action, the superglue 4 will quickly spread over the overlapped part of the two coverslips. The amount of glue applied should be such that there will not be too much superglue after the two coverslips are laminated. 4 into the round hole part of the cover glass 1. Leave the glued sample pool to stand for 24 hours, and use it after the glue is c...

Embodiment 2

[0038] A photonic crystal spectroscope with small silica spheres with a diameter of 1 μm was prepared.

[0039] The basic preparation process is the same as in Example 1. The difference is that the raw material used is a monodisperse suspension of silica beads with a diameter of 1μm, and the density of the silica beads is 2600Kg / m 3 , The volume ratio of the ball to water is 1:500, and the diameter of the circular hole in the sample cell used is 3mm. The obtained beam splitter has a light splitting effect similar to that of Embodiment 1, and can divide the incident parallel light beam into six symmetrically distributed light beams at the first-order diffraction angle.

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Abstract

The present invention prepares required photon crystal optical splitter with micron level diameter solid microsphere suspension and through self organization growth process. Two-dimensional planar photon crystal micro grating with excellent periodical structure may be grown in very small space and area and may be used in optical path as light splitting device. The preparation process is simple and needs no micro machining and other complicated measures; and the prepared sample has excellent light splitting characteristic and grating constant capable of being controlled via the diameter of the microsphere used in the preparation. The optical splitter has wide application foreground in integrated optical path and other fields.

Description

Invention field [0001] The invention relates to a preparation method of a photonic crystal beam splitter. Background technique [0002] Photonic crystal is a new type of optical material developed in recent years. It is a kind of artificial crystal periodically arranged by two or more materials with different dielectric constants, and its period is on the order of light wavelength. The Self-Assembly method is a commonly used method for preparing three-dimensional photonic crystals. The beam splitter is an important optical element. As a beam splitter element with different spectrums, it is a core element in ordinary optical instruments. In recent years, due to the development of integrated optics and micro optics, there is an increasing need for a small size and high efficiency micro-elements as the beam splitting elements in these devices. It is known that the spectroscopic micro-grating element made of optical fiber (Document 1, I. Mikulskas, S. Juodkazis, R. Tomasiunas, and JG...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/01
Inventor 张琦程丙英倪培根张道中
Owner INST OF PHYSICS - CHINESE ACAD OF SCI