Method for manufacturing tunable photonic crystal and tunable photonic crystal

A technology of photonic crystals and manufacturing methods, applied in the direction of optical waveguide light guide, light guide, optics, etc., can solve the problems of high price, long time consumption, and restricted application range, etc., and achieve the effects of fast response speed, convenient implementation, and various means

Inactive Publication Date: 2014-06-25
HOHAI UNIV CHANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the design and manufacture of photonic crystals are mainly in the laboratory, mainly using micromachining, photolithography and etching technologies, but these technologies cannot be mass-produced due to complex processes, high prices, and long time-consuming. Compared with self-assembly preparation method, it has incomparable advantages
In addition, once the photonic crystals manufactured by the above process are formed, their structural parameters cannot be changed, so ordinary photonic crystals can only achieve specific functions, which greatly restricts their practical application range

Method used

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  • Method for manufacturing tunable photonic crystal and tunable photonic crystal
  • Method for manufacturing tunable photonic crystal and tunable photonic crystal
  • Method for manufacturing tunable photonic crystal and tunable photonic crystal

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Experimental program
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Effect test

Embodiment 1

[0042] In this embodiment, photodetectors are selected to detect changes in the reflectivity of the probe light, such as image 3 As shown, under the premise that the detection light is not turned on, the θ / 2θ turntable is rotated, and the light intensity of the pump light measured by the photodetector is observed at the same time, so that the light intensity reaches the minimum value. Turn on the detection light, and use the photodetector to record the change of the reflectivity of the detection light, turn off the pump light, and the signal measured by the photodetector will change accordingly, after the measured signal is stable, turn on the pump light until the signal reappears Stable, repeat the above steps, you can detect if Figure 4 Shown is the effect of the light reflectance being modulated by the switching pump light.

[0043] Depend on Figure 4 It can be seen that the reflectance of the probe light will change with whether the pump field is applied, and the refl...

Embodiment 2

[0045] Different from Embodiment 1, this embodiment uses a PSD displacement sensor to record the change of the lateral displacement of the reflected light beam of the detection light. On the premise that the detection light is not turned on, the θ / 2θ turntable is rotated, and the light intensity of the pump light measured by the photodetector is observed at the same time, so that the light intensity reaches the minimum value. Turn on the probe light, and use the PS sensor to record the lateral displacement change of the reflected light of the probe light, turn off the pump light, and the signal measured by the photodetector will change accordingly, after the measured signal is stable, turn on the pump light until the signal Stabilize again, repeat the above steps, you can detect the effect of the lateral displacement of the reflected light with the modulation of the switching pump light, the effect is as follows Figure 5 shown.

[0046] Depend on Figure 5 It can be seen th...

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Abstract

The invention discloses a method for manufacturing a tunable photonic crystal and the tunable photonic crystal. Colloidal solutions, such as magnetofluid, containing nano particles are injected into a waveguiding structure coated with liquid core two-sided metal to form a guided wave layer; an ultrahigh order guided mode is excited in the waveguiding structure through a free space coupling technology, and light trapping for the nano particles is achieved by means of a light field enhancement effect of the ultrahigh order guided mode. Due to the fact that periodic field intensity distribution of the ultrahigh order guided mode is formed in the guided wave layer, and the particles in the colloidal solutions can be automatically assembled to form a regular periodic density structure under the action of the optical tweezer effect, namely the tunable photonic crystal is formed. The structure of the photonic crystal can be modulated through changing of intensity, incident angles and other parameters of pump light, and thus the photonic band gap of the photonic crystal is changed. The tunable photonic crystal manufactured through the method is low in cost and short in manufacturing cycle.

Description

technical field [0001] The invention belongs to the technical field of laser and nanomaterials, and relates to a method for manufacturing a tunable photonic crystal and a tunable photonic crystal, in particular to the manufacture of a self-assembled one-dimensional photonic crystal based on a liquid-core double-sided metal-clad waveguide structure The method and the photonic crystal produced by the manufacturing method. Background technique [0002] With the introduction and vigorous development of transformation optics, the research on microstructures with structural periods comparable to the wavelength of light, such as photonic crystals and metamaterials, is also increasing. Various periodic microstructures are widely used in the fields of nano-optics, sensing and detection, optical communication and biochemical medicine. Among them, based on the theory of photonic crystals, periodic structures on the order of the wavelength of light can form a photonic band gap, and lig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/122G02B6/13
Inventor 殷澄单鸣雷陈秉岩李建韩庆邦朱昌平
Owner HOHAI UNIV CHANGZHOU
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