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Integrated multilevel two-dimensional optical micro electro-mechanical systems optic switch

A micro-electromechanical system and optical switch technology, which is applied in the field of optical transmission, can solve the problems of poor port-to-port repeatability, reduced optical power loss, and large optical power loss, so as to reduce beam diffusion loss and reduce the size of micromirrors and wafer size, the effect of relaxing the constraints of the manufacturing process

Inactive Publication Date: 2008-07-09
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Either poor port-to-port repeatability, high cost due to high optical power loss and a large number of fiber interconnects, or increased complexity and cost due to the use of a large number of rotatable concave mirrors
Although the two-dimensional optical switch structure using rearranged Benes inter-level interconnection rules has certain advantages, it is still limited by the size of mirrors and wafers, and its optical power loss needs to be further reduced.
[0022] Therefore, the commonly used two-dimensional optical switch structure is still limited by the size of mirrors and wafers, and its optical power loss needs to be further reduced.

Method used

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  • Integrated multilevel two-dimensional optical micro electro-mechanical systems optic switch
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  • Integrated multilevel two-dimensional optical micro electro-mechanical systems optic switch

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Embodiment 1

[0060]Since the integrated multi-level two-dimensional optical MEMS optical switch can be decomposed into multiple 2×2 optical switch modules, the number of input and output ports N of the integrated multi-level two-dimensional optical MEMS optical switch of the present invention is an integer multiple of 2, such as FIG. 7 is a schematic diagram showing the structure and operation mechanism of the 16×16 integrated multi-level two-dimensional optical MEMS optical switch in Embodiment 1 of the present invention. Wherein the number of input / output ports of the optical switch is 16, and the distance between two adjacent mirrors of the same level, that is, the period of the optical switch, is p. The structure of the optical switch in this embodiment is:

[0061] The first input port to the 16th input port are arranged in order from top to bottom, the distance between the first input port and the second input port is p, starting from the second input port, the nth input port The dis...

Embodiment 2

[0078] Fig. 1 shows that the present invention implements 4 * 4 integrated multilevel two-dimensional optical MEMS optical switch structure and operating mechanism schematic diagram; Wherein the input / output port number of optical switch is 4, the distance between two adjacent mirrors of the same level That is, the period of the optical switch is p, and the structure of the optical switch in this embodiment is:

[0079] The first input port to the fourth input port are arranged in sequence from top to bottom, the distance between the first input port and the second input port is p, starting from the second input port, the nth input port The distance between it and the n+2th input port is p, where n is an even number and n+2 is less than N, that is, the distance between the second port and the fourth port is p; the nth input port and The n+1th input port is at the same position, where n is an even number and n+2 is less than N, that is, the second port and the third port are at...

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Abstract

The invention relates to an integrated multistage two-dimensional optical MEMS optical switch and a method for achieving optical path switching. The optical switch has N input / output ports, wherein N is integer multiples of 2, micro-mirrors in the optical switch are divided into N stages and are arranged from left to right in a sequence from the first stage to the N stage; two micro-mirrors of the same stage has a distance p therebetween, two micro-mirrors of two adjacent stages has a distance p / 2 therebetween, each odd-numbered stage has N / 2 two-side mirrors, each even-numbered stage has N / (2-1) two-side mirrors; the two-side mirror has an open and a close states; and a single-side mirror in open state is fixed above the first micro-mirror by a distance p and below the N / (2-1) micro-mirror by a distance p in the micro-mirrors of each even-numbered stage. The method can achieve output at different ports by setting the state of the double-side mirrors in the optical switch. The invention has the advantages of enhanced repeatability from port to port and reducing optical power loss and beam diffusion loss.

Description

technical field [0001] The invention relates to the field of optical transmission, in particular to an integrated multi-level two-dimensional optical micro-electromechanical system optical switch adopting the Spanke-Benes inter-level interconnection rule. Background technique [0002] At present, the mere network has become the foundation of the digital transmission of the backbone network. By transmitting multiple low-bit-rate optical signals of different wavelengths in one optical fiber, the Wave Division Multiplexing (WDM) transmission system provides us with a transmission bandwidth of Gbit / s. The technology of simultaneously transmitting two or more optical signals of different wavelengths in the same optical fiber is called wavelength division multiplexing. Specifically, wavelength division multiplexing is to combine two or more optical carrier signals of different wavelengths (carrying various information) at the sending end through a multiplexer (also known as a mul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/08
Inventor 郭更生朱国梅
Owner BEIJING UNIV OF POSTS & TELECOMM
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