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Adjustable photon crystal self-aligning effect light beam adjuster, method and uses

A beam conditioner, photonic crystal technology, applied in the field of optical information, can solve problems such as limiting applications

Inactive Publication Date: 2007-10-17
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the existence of photonic crystal dispersion effect, self-collimation and its related design have a strong frequency dependence, which greatly limits the application
On the other hand, research on tunable photonic crystals has been extensively studied in the past decade and has been realized in materials such as liquid crystals, semiconductors, organics, colloidal materials, and superconductors, but its applications are generally limited to modulation of defect modes.

Method used

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  • Adjustable photon crystal self-aligning effect light beam adjuster, method and uses
  • Adjustable photon crystal self-aligning effect light beam adjuster, method and uses
  • Adjustable photon crystal self-aligning effect light beam adjuster, method and uses

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Embodiment 1

[0027] Embodiment 1: In an optical integrated chip, due to size limitation, it is very difficult to make a collimating lens and a waveguide fiber. By using the present invention, the two can be integrated into a compact device, which can be used as a self-collimating waveguide. Moreover, the self-collimation waveguide has a relatively wide tuning range, and can realize relatively good self-collimation in the spectral range of wavelength 1.3-1.55 μm.

Embodiment 2

[0028] Embodiment 2: In the optical Internet, the present invention can be used to realize the focus and divergence of light beams, thereby replacing traditional optical lenses. The divergence angle can be automatically adjusted by controlling the incident light intensity, and the adjustment range is -1° to 4°. Therefore, beam steering and coupling devices can be fabricated using the present invention.

Embodiment 3

[0029] Embodiment 3: In optical storage and optical computing, the response time of the optical switch directly determines the access time and computing speed. Using the invention as an optical switch, the response time is on the order of picoseconds, which is 1000 times faster than that of the current electronic switch, and the switch transmittance ratio reaches 3:1, with higher contrast.

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Abstract

The invention provides a beam controlling method and a beam regulating apparatus achieved by using the adjusting photon crystal self-collimating effect, and the applications thereof. The invention is characterized in that the parts is provided with an especial beam control philosophy in the range of the frequency of the self-collimating effect. The adjusting self-collimating is realized through adjusting the color dispersion property of the self-collimating points nearby by use of the adjustable medium parameter for example the non-linear susceptibility, and the interaction of the photon energy strip structure. Moreover, the function of the consecutive adjustable diverging angle, self-locking self-collimating and special auto-conduction are achieved. The functions make an important role in the light integration and light interconnection, and can be used for designing the adjustable self-collimating wave-guide, the self-locking beam width adjusting wave-guide, the beam width controller, the adjustable beam enlarged mirror, the coupling mirror and the second pico-second grade high speed optical switch.

Description

technical field [0001] The invention relates to a method for realizing beam control by using the self-collimation effect of the adjustable photonic crystal. The nearby dispersion relation can be controlled artificially, so as to realize the brand-new optical control function. It belongs to the field of optical information technology. Background technique [0002] Optical integration technology has potential important applications in optical communication, optical computing, and optical transmission, so it has received extensive attention. Electromagnetic Waves in a Photonic Crystal, Science 282, 274 (1998)], 2. [H.Kosaka, T.Kawashima, A.Tomita, M.Notomi, T.Tamamura, T.Sato, and S.Kawakami, Photonic crystals for micro lightwave circuits using wavelength dependent angular beam steering, Appl. Phys. Lett. 74, 1370 (1999)]. Due to its high anisotropy and complex dispersion characteristics, the photonic crystal structure not only has the optical signal processing function of t...

Claims

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Application Information

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IPC IPC(8): G02F1/35G02F1/00
Inventor 蒋寻涯周传宏
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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