8X8 array light switch and control method thereof

A control method and optical switch technology, applied in the field of optical communication network, to achieve high-efficiency control method, realize high-speed control and complex, realize the effect of optical path switching

Inactive Publication Date: 2007-08-22
SHANGHAI BROADBAND TECH
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  • Claims
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AI Technical Summary

Problems solved by technology

Without scientific algorithms, it is impossible to achieve high-speed control and complex optical path switching

Method used

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  • 8X8 array light switch and control method thereof
  • 8X8 array light switch and control method thereof
  • 8X8 array light switch and control method thereof

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0027] As shown in Figure 1, an 8×8 array optical switch includes first, second, third, fourth, fifth, sixth, seventh, eighth 2×2 optical switches and first, second 4×4 optical switch, the input port and output port of the 2×2 optical switch are divided into upper port and lower port, wherein, the input ports (31, 32, 33, 34) of the first 4×4 optical switch are respectively connected with The upper ports (21, 23, 25, 27) of the first, second, third and fourth 2×2 optical switch output ports are connected in optical path, and the output ports (41, 42, 43, 44) Communicate with the optical paths of the upper ports (51, 53, 55, 57) of the fifth, sixth, seventh, and eighth 2×2 optical switch input ports. The input ports (35, 36, 37, 38) of the second 4×4 optical switch are respectively connected to the lower ports (22, 24) of the output ports of t...

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Abstract

The invention is a 8x8 array photoswitch and the control method thereof, comprising 8 2x2 photoswitches and two 4x4 photoswitches. And its control method comprises the steps of: 1) establishing light path switching numerical tables for the two 4x4 photoswitches; 2) according to the input port of input light path and the corresponding target port thereof, setting adjacent input port to connect with a different light path of 4x4 photoswitch, where each input port communicates with the corresponding target port through the same light path of 4x4 photoswitch; 3) according to the connecting state of input and output ports of 4x4 photoswitch, inquiring about the corresponding values in the first and second numerical tables to complete light path switching of the 8x8 photoswtich. And it provides a high efficiency control method and implements high speed control and complex light path switching.

Description

technical field [0001] The invention relates to an optical switch and a control method thereof, belonging to the technical field of optical communication networks. Background technique [0002] In optical communication networks, optical switches are widely used in optical path protection and restoration, optical fiber cross-connect (OXC), optical add / drop multiplexer (OADM), and wavelength division multiplexing (WDM). The optical switch is a relatively important optical passive device, which can switch the optical signal on and off in the optical communication network system. [0003] Common optical switches include 2×2 optical switches and 4×4 optical switches. With the development of optical communication technology, it often occurs that more than four optical fibers need to switch optical paths with each other. Existing 2×2 optical switches and 4×4 optical switches cannot meet such needs. [0004] In addition, theoretically, there are 40320 (8!) combinations of optical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/35
Inventor 刘浩锋陆肖元曹建红张罗成
Owner SHANGHAI BROADBAND TECH
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