Control device of micro-ring optical switch

Abstract

The invention discloses a control device of a micro-ring optical switch. An optical signal is sent to a spectrum detection unit after being processed through a micro-ring optical switch unit. The spectrum detection unit detects spectrum changes and conducts photoelectric signal conversion. An electrical signal output by the spectrum detection unit sequentially passes through a digital signal processing unit and a driving signal generating unit so that an appropriate driving signal can be generated. Micro-ring optical switch driving and temperature control over a chip are completed through a driving unit. In this way, no cryogenic temperature compensation is needed by the micro-ring optical switch, the defect that the micro-ring optical switch is degraded when affected by temperature drifting is overcome, the process requirement for manufacturing is lowered, and the control device can be applied to high-speed exchange networks.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and more specifically relates to a control device for a micro-ring optical switch. Background technique [0002] In the process of social informatization, optical fiber communication network technology has played an important role; all-optical switching technology can ensure the reliability of the network and provide a flexible signal routing platform. Although the existing communication systems use electronic switching technology, the developing An all-optical network requires optical switching technology to achieve high network speed and protocol transparency. Optical switching technology provides dynamic optical domain processing for the high-speed information flow entering a node. Only the information belonging to the node and its subnet is added and dropped, and then handed over to the electrical switching equipment for further processing. This can overcome the capacity b...

AI Technical Summary

Problems solved by technology

At present, there are two main methods to solve the temperature sensitivity of the micro-ring optical switch: one is to keep the micro-ring resonator at a constant temperature by integrating a micro-heater on the micro-ring resonator. With the increase of the number of integrated microrings, the number of pins will become more and more, and the circuit packaging will become more and more difficult; another method to reduce the temperature dependence of the microring optical switch is to use a thermal balance interferometer structure embedded in the microring or in the package. The negative thermo-optic coefficient material is used in the layer. The disadvantage of this scheme is that there are many functional elements on the chip and its peripheral control circuits, and its manufacturing process is complicated.

Images