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Single-crystal 2X2 photo switch

An optical switch and crystal technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as large loss of light

Inactive Publication Date: 2005-01-26
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

LiNbO 3 The switching speed of the crystal is relatively fast, but the system consists of three crystal materials, two polarization deflectors and an electro-optic modulator, and the loss of light is relatively large

Method used

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  • Single-crystal 2X2 photo switch
  • Single-crystal 2X2 photo switch
  • Single-crystal 2X2 photo switch

Examples

Experimental program
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Effect test

example 1

[0047] Example 1: If figure 1 structure shown. The size of crystal 7 is 9×4×0.2cm 3 , beam input facet 7 01 with the second reflective surface 7 05 The included angle γ=θ=40°, the central optical axis of the two incident lights is 1 1 1 2 and 2 1 2 2 The distance between Hoe=0.15cm, electrode length L=3.4cm, half-wave voltage V 1 / 2 = 235V (aspect ratio of 1:17).

example 2

[0048] Example 2: If figure 2 structure shown. The crystal size is 7.4×1.5×0.2cm 3 , beam input facet 7 01 with the second reflective surface 7 05 The included angle γ=110°, θ=70°, the light path A is vertically incident (α ol =0°), two incident light central optical axis 1 1 1 2 and 2 1 2 2 The angle between them is Δoe=5.4°, the two incident lights are on the beam input surface 7 01 Hoe=0.01cm, electrode length L=4.1cm, half-wave voltage V 1 / 2 =195V (aspect ratio of 1:20.5).

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Abstract

An optical switch of 2X2 monolithic crystal suitable for optical internet and optical computing fields applies a crystal of long parallel hexahedron in the middle of which set a pair of electrodes along the crystal light shaft to make up a photoelectric modulation region in the middle of the crystal. The photoelectric modulation region from the crystal beam input face to the middle position is the light beam joining region and the light splitting region is from behind the photoelectric modulation region to the crystal optical beam output face, so as to realize three functions of input beam polarizing, deflection and beams joining, output beam polarizing, deflection and bean splitting and photoelectric modulation, integrating basic performance necessary for 2X2 optical switch.

Description

Technical field: [0001] The invention is a single crystal 2×2 optical switch, which is a key device of an optical switching network system and is applied in the fields of optical Internet, optical computing and the like. Background technique: [0002] Optical switching, as the main component of the optical communication network, needs to be able to process information with a total amount of hundreds or thousands of terabit seconds. A 2×2 optical switch is the most basic unit device in an optical switching system. Multiple 2×2 optical switch arrays are cascaded in different forms to form various optical switching network systems. The 2×2 optical switch switching network is also used to form an optically interconnected multiprocessor computer system. [0003] Prior art [1] (see Proceedings of the IEEE, Ming C.Wu, Micromachining foroptical and optoelectronic systems, Vol.85, No.11, 1997, pp1835-1856.) Utilize micro-electromechanical systems (MEMS), the height The polished mir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/03
Inventor 宋哲刘立人任海霞周常河刘德安任立勇董前民张娟
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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