Optical signal transceiving switching unit, distributed optical switching system and extension method thereof

Abstract

The invention relates to an optical signal transceiving switching unit, a distributed optical switching system and an expansion method thereof. The optical signal transceiving switching unit is provided with N input / output optical ports, each optical port can simultaneously transmit and receive optical signals, the optical signal transceiving switching unit comprises N * N cyclic addressing array waveguide grating routers, the N optical ports on one side serve as internal input / output optical ports, and the N optical ports on the other side serve as input / output optical ports of the optical transceiving switching unit; the N tunable optical modules are interconnected with the N internal input / output optical ports of the cyclic addressing array waveguide grating router in a one-to-one correspondence manner; the tunable optical module is provided with a light emitting unit and a light receiving unit; the control mainboard is electrically connected with the N tunable optical modules and is used for controlling the corresponding tunable optical modules to emit specified wavelength optical signals of the corresponding wavelengths according to the received management information; and the management information received by the control mainboard is sent by the upper computer or is obtained by demodulating the optical signal received by the optical receiving unit.

Description

technical field [0001] The invention relates to an optical signal sending and receiving exchange unit, a distributed optical exchange system and an extension method thereof. It is applicable to the technical field of optical network communication. Background technique [0002] In the information age, with the rapid growth of applications such as cloud computing, data centers, Internet of Things, virtual reality, and high-definition short videos, the amount of global data is growing explosively. It is expected that the annual growth of global data will remain at about 50% in the future. 90% of the global data comes from data centers. How to deal with large-scale massive data requires continuous expansion of the infrastructure of the big data center, especially the optical switching system equipment. [0003] In order to cope with the rapid growth of data volume, optical switching equipment not only needs to support large-capacity optical switching, but also requires the scal...

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Problems solved by technology

[0007] 3. The optical switching system based on the optical crossbar switch, the optical crossbar switch of this system is difficult to manufacture and the cost is high (see image 3 )

However, the above structures are all lumped optical switches, and the expansion of the total capacity is limited by the number of ports of the AWG and the optical crossbar switch, which is not convenient for arbitrary expansion.

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