Method for optimizing MEMS optical switch switching crosstalk

Abstract

The invention discloses a method for optimizing switching crosstalk of an MEMS (Micro Electro Mechanical System) optical switch. The method comprises the following steps of: determining an anti-crosstalk safety voltage area of each optical fiber port; in the switching process, the optical signal switching path is made to avoid the anti-crosstalk safety voltage area by controlling the switching voltage. On the premise that port screening is not carried out and all ports can work normally, the optical crosstalk of all the ports is optimized, it is ensured that switching between any two ports does not generate crosstalk on other optical ports, and the production process is simple and easy to implement.

Description

technical field [0001] The invention belongs to the field of optical fiber communication, and in particular relates to a method for optimizing the switching crosstalk of a MEMS (micro-electromechanical system) optical switch, which can effectively improve the optical crosstalk during the switching process of the MEMS optical switch and improve the overall performance index of the optical communication system. Background technique [0002] Optical switch is one of the basic optical devices of optical communication system, and it is a key product for optical signal switching and routing control. With the development of MEMS technology and the in-depth application in the field of optical communication, MEMS optical switches have gradually become the main realization technology of optical switches due to their significant advantages such as small size and low power consumption, and the market scale is expanding year by year. [0003] The basic design of the existing MEMS optical...

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Problems solved by technology

However, this design also introduces new problems. With the increase of the number of two-dimensional fiber arrays, when optical signals are switched between target ports, it is easy to generate optical power impact on ports during the switching process and optical crosstalk to non-target ports.

[0004] At present, the MEMS optical switches in the industry basically cannot guarantee the optical crosstalk during the switching process, especially the optical switches with a high number of ports will cause large optical power interference to many ports during the switching process

[0005] In view of the above problems, one of the existing solutions is to solve them in a unified way through the overall system, instead of solving the optical crosstalk problem of the MEMS optical switch alone, the problem of this solution is to increase the cost and complexity of the overall system

Another solution is to select between the output ports of the MEMS optical switch and filter out the ports without switching optical crosstalk, but the problem introduced is to reduce the number of ports of the MEMS optical switch and reduce the number of optical signal routes it can perform , also increases the cost of production and application

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