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Method for preparing high polymer micro-nano fiber bragg grating based on nanoimprint lithography

A technology of Bragg grating and micro-nano optical fiber, which is applied in cladding optical fiber, optical mechanical equipment, optical waveguide and light guide, etc., can solve the problems of time and material consumption, and achieve the effect of simple method, low cost and high sensitivity

Active Publication Date: 2013-04-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such methods require extremely high-precision control and complex optical or electrical systems to implement, and are time- and material-intensive

Method used

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  • Method for preparing high polymer micro-nano fiber bragg grating based on nanoimprint lithography
  • Method for preparing high polymer micro-nano fiber bragg grating based on nanoimprint lithography
  • Method for preparing high polymer micro-nano fiber bragg grating based on nanoimprint lithography

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation The micro-nano fiber Bragg grating is prepared using commonly used polymethyl methacrylate as a polymer material, and the steps are as follows:

[0028] 1. If figure 1 As shown, first a polydimethylsiloxane film 3 is placed on a glass substrate 4 as a mechanical support. Then place the polymethyl methacrylate micro-nano optical fiber 2 on the polydimethylsiloxane film 3 . The polydimethylsiloxane film has a width of 300 μm and a thickness of about 50 μm.

[0029] 2. Heat the polydimethylsiloxane film 3 and the glass sheet 4 to 120°C with an electric heater 5, which exceeds the glass transition temperature of polymethyl methacrylate (about 100°C).

[0030] 3. Use a commercial planar reflective grating1 as an imprint template with a period of 555 nm (1800 lines per mm). Use a three-dimensional precision adjustment frame to place the grating template vertically on the polydimethylsiloxane film 3, while ensuring that the grating plane is parallel to the polyd...

Embodiment 2

[0036] Also prepare micro-nano fiber Bragg gratings using commonly used polymethyl methacrylate as a polymer material. The width of the film is 300 μm. Other steps and parameters are the same as in Example 1.

[0037] Figure 5 The transmission spectrum of a polymethyl methacrylate micro-nano fiber Bragg grating with a width of 1.8 μm, a thickness of 1 μm and a grating length of 300 μm is given. It can be seen that the peak of the transmission spectrum is 1518 nm. The experimental results also correspond well with the theoretical calculation results. The grating effect inside the nanoimprinted polymer micro-nano fiber Bragg grating was verified.

Embodiment 3

[0039] Similarly, the commonly used polymethyl methacrylate is used as a polymer material to prepare micro-nano fiber Bragg gratings. The difference between the steps of this method and the steps of preparing nanoribbons is that the applied force is 0.05 N, and the polydimethylsiloxane used The width of the film is 100 μm. Other steps and parameters are the same as in Example 1.

[0040] Image 6 The transmission spectrum of a polymethyl methacrylate micro-nano fiber Bragg grating with a width of 1.1 μm, a thickness of 400 nm and a grating length of 100 μm is given. It can be seen that the transmission spectrum peaks at 1490 nm. The experimental results also correspond well with the theoretical calculation results. The grating effect inside the nanoimprinted polymer micro-nano fiber Bragg grating was verified.

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Abstract

The invention discloses a method for preparing a high polymer micro-nano fiber bragg grating based on nanoimprint lithography. The method comprises the following steps of: tightly adhering a polydimethylsiloxane film on a glass substrate, and arranging a high polymer micro-nano fiber on the polydimethylsiloxane film; heating the polydimethylsiloxane to imprint temperature by using an electric heater, wherein the imprint temperature exceeds the glass transition temperature of the high polymer micro-nano fiber; taking a standard commercial plane reflection grating as a template, applying force on the template, and imprinting a grating pattern on the high polymer micro-nano fiber; and imprinting the fiber bragg grating on the surface of the high polymer micro-nano fiber. The high polymer micro-nano fiber bragg grating prepared through the nanoimprint method has the characteristics of being simple in method is simple, low in cost and suitable for batch production. The strain sensing sensitivity is higher than the sensitivity of the conventional glass material, and the fiber bragg grating has wide potential application in the fields such as lasers, sensors and nano-optical mechanical systems.

Description

technical field [0001] The invention relates to a method for preparing a Bragg grating, in particular to a method for preparing a polymer micro-nano fiber Bragg grating based on nanoimprinting. Background technique [0002] Fiber Bragg gratings can reflect and transmit specific wavelengths with a compact structure, and have become an essential part of photonics circuits and devices. Recently, due to its high compactness, high optical confinement, and strong interaction with surrounding media, micro-nano fibers with diameters on the order of wavelength have attracted more and more attention in the research field of micro-photonics devices. The Bragg grating based on micro-nano fiber inherits the advantages of micro-nano fiber, such as high sensitivity to environmental changes, small size and good compatibility with fiber optic systems, and can be widely used in sensing, lasers, waveguides, optoelectronic devices and other fields have received extensive attention. Polymer ma...

Claims

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Application Information

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IPC IPC(8): G02B6/02G03F7/00
Inventor 谷付星林星虞华康方伟童利民
Owner ZHEJIANG UNIV
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