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Whispering gallery mode photonic device and preparation method thereof

A technology of whispering gallery mode and photonics, which is applied to laser components, structure/shape of optical resonators, lasers, etc., can solve the problems of cumbersome process, poor controllability, and inability to realize the preparation of multi-microcavity coupling structures, and achieve The process is simple, the cost is low, and the effect of achieving high sensitivity response

Active Publication Date: 2014-12-31
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods face the problems of cumbersome process and poor controllability. More importantly, they cannot realize the preparation of arrayed and patterned multi-microcavity coupling structures to realize functional whispering gallery mode photonic circuits.

Method used

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  • Whispering gallery mode photonic device and preparation method thereof
  • Whispering gallery mode photonic device and preparation method thereof
  • Whispering gallery mode photonic device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1. Using polymer micro-rings to modulate optical whispering gallery modes

[0040] Such as figure 2 As shown, the material (1) used is the micron ring array structure provided by the inventor, and the fiber cone (2) (cone core diameter 4 above.

[0041] The preparation method of the micro-ring array structure used in the method is as follows:

[0042] Under the condition of 1000 rpm, 0.3 g of polystyrene (molecular weight: 400,000) was slowly added to 10 ml of toluene, heated to 40°C to fully dissolve to form a clear solution. The resulting mixed solution was spin-coated onto clean MgF at 4000 rpm 2 After the solvent is fully volatilized on the substrate, these substrates are placed in a vacuum drying oven to dry to obtain a uniform polymer composite color-changing film. The prepared polystyrene film / MgF2 substrate was placed on an inkjet printing device, and dimethylformamide (DMF) solvent was sprayed with a 50-micron nozzle to form a discrete micro-ring a...

Embodiment 2

[0043] Example 2. Dye-doped polymer micro-rings generate whispering gallery mode micro-laser

[0044] Such as image 3 As shown, the whispering gallery mode micro-laser material is the micron ring array structure (7) provided by the inventor, and the pulse laser (8) (514 nanometers) of the titanium: sapphire laser is used as the pump light, and the spot diameter is 10 microns. The intensity is 1.5 microjoules per pulse, irradiating a partial area of ​​a single micro-ring array structure, so that the dye doped in it emits light to form a gain. The overflow light from the micro-ring cavity is collected through a 50x objective lens (9), and the excitation light is filtered out with a filter (10) (520nm long-pass) to obtain the multi-mode laser light (11) generated by the whispering gallery mode micro-cavity.

[0045] The preparation method of the micro-ring array structure used in the method is as follows:

[0046] Slowly add 0.5 g of polymethylmethacrylate (PMMA) to 10 ml of c...

Embodiment 3

[0047] Embodiment 3, micro-ring coupling realizes single-mode laser

[0048] The material used is the micron ring array structure provided by the inventor. The pulsed laser (480 nanometers) of a titanium-doped sapphire laser is used as the pump light, the spot diameter is 0.5 mm, and the single pulse energy is 1 millijoule. The micro-ring array structure is coupled to make the dye doped in it emit light to form gain. The overflow light of the micro-ring cavity is collected through a 50x objective lens, and the excitation light is filtered out with a filter (500 nm long pass) to obtain the laser spectrum of the whispering gallery mode micro-cavity. By adjusting the diameters of the two coupling rings and using the "gear effect" formed by the coupling of two different ring cavities, the resonant modes at the same wavelength position are selectively amplified, and the laser mode selection function is realized to obtain a single-mode laser.

[0049] The preparation method of the ...

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Abstract

The invention provides a whispering gallery mode photonic device and a preparation method thereof. According to the preparation method of a micro ring array structure, solvent droplets are utilized to dissolve a polymer film, so that a "coffee ring effect" can be generated, and therefore, polymer can be accumulated at the periphery of liquid so as to form an annular structure of which the height is obviously different from the height of the film, and conduction and confinement of light in the polymer structure can be realized; and light signals are inputted to the micron ring structure through utilizing excitation, scattering or near field coupling modes, so that a resonance effect in a whispering gallery mode can be realized. The prepared micron ring structure can be adopted as a high-quality factor optical micro cavity, so that a modulation-mode spectrum can be obtained, the width of spectral lines of the spectrum being significantly narrowed; a whispering gallery-mode light amplification stimulated emission can be realized through optical gain; and in a multi-ring coupled array structure, light signal processing and high sensitive response to outside stimuli can be realized according to the wavelength change information of the modulated spectrum and laser modes.

Description

technical field [0001] The invention relates to a photonic device and a preparation method thereof, in particular to a whispering gallery mode photonic device and a preparation method thereof. Background technique [0002] With the rapid development of information network technology, the amount of information that people have to face is increasing day by day, which puts forward higher requirements for the performance of information storage and processing devices. The development of the information age urgently requires the research and development of high-performance integrated optics Devices to address the operational speed limitations and thermal effects at small scales faced by integrated electronics. Compared with the linear structure of the Fabry-Rott resonator, the ring whispering gallery mode microcavity shows a higher quality factor, so it can modulate the transmission or emission spectrum with higher resolution, and realize a series of line-based modes. Modulated i...

Claims

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Application Information

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IPC IPC(8): H01S3/08H01S3/10C08J5/18
Inventor 赵永生张闯刘云圻赵岩闫永丽姚建年
Owner INST OF CHEM CHINESE ACAD OF SCI
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