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Multicast control method of optical switch array based on Benes structure

A technology of optical switch array and control method, which is applied in the field of optical communication, can solve the problems such as the multicast control method of Benes optical switching array, and achieve the effects of convenient routing distribution, reduced quantity, and low loss

Active Publication Date: 2022-01-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

At present, the literature has proposed a unicast routing algorithm for optical switching networks based on the Benes structure (A. Karimi, K. Aghakhani, S. E. Manavi, et al. Introduction and Analysis of Optimal Routing Algorithm in Benes Networks [J]. Procedia Computer Science, 2014,42:313-319), but there is no multicast control method of Benes optical switching array

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  • Multicast control method of optical switch array based on Benes structure
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  • Multicast control method of optical switch array based on Benes structure

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Embodiment

[0066] figure 1 It is a flow chart of the multicast control method of the optical switch array based on the Benes structure of the present invention.

[0067] In this embodiment, based on the control voltage of the 2×2 optical switch in the Benes structure, the output function of the optical switch with different splitting ratios can be realized. The 2×2 MZI optical switch unit is composed of two 2×2 optical couplers and two waveguide arms, each waveguide arm is equipped with a phase shifter, which can be realized by changing the phase difference between the two waveguide arms Exchange state changes. This structure can control the phase difference by adjusting the control voltage applied to the optical switch unit to achieve dual-port output with different splitting ratios, which provides a basis for realizing the multicast function after cascading optical switches.

[0068] At the same time, in the Benes structure, there are many feasible routing connections for establishin...

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Abstract

The invention discloses a multicast control method of an optical switch array based on a Benes structure. By utilizing the characteristic that a 2 * 2MZI optical switch has the function of adjusting the control voltage of the 2 * 2MZI optical switch so as to control light splitting output of signals at two output ports, in an N * N Benes optical switch array constructed by taking the 2 * 2MZI optical switch as a basic unit, the internal resource overhead is reduced; And routing distribution of multicast signals and calculation of control voltage of each optical switch are completed, and finally the output of equal power of each multicast signal routing request at a destination port is realized. The method can realize multicast and broadcast exchange functions of signals in a Benes optical exchange network, and provides an effective solution for solving the problem of multicast and broadcast communication of optical signals in the field of all-optical communication.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and more specifically relates to a multicast control method of an optical switch array based on a Benes structure. Background technique [0002] With the explosive growth of data volume in the network, the traditional electrical interconnection network is gradually unable to meet the needs of future network development due to physical constraints such as high transmission delay, limited bandwidth, and high energy consumption. Due to the use of optical fiber for signal transmission, the optical interconnection network can greatly improve the signal transmission rate and channel bandwidth. At the same time, it has strong anti-interference ability and lower cost. It is rapidly replacing the electrical interconnection method in the network. Requirements, optical switching is used to directly switch the optical signal from the input port to the corresponding output port. [0003] In the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00
CPCH04Q11/0001H04Q11/0005H04Q2011/0047H04Q2011/0058
Inventor 姚思石林张杰陈名熙周嘉润凌云邱昆
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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