An optical switch array chip based on the principle of digital optical phase conjugation
An optical switch array, digital optics technology, applied in optics, optical components, nonlinear optics, etc., can solve the problems of increased length, increased crosstalk, increased manufacturing difficulty, etc.
Active Publication Date: 2016-01-06
HUAZHONG NORMAL UNIV
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Problems solved by technology
Constructing such a narrow wavelength-selective optical switch would increase its length many times and make it more difficult to manufacture
Moreover, in practice, the original working wavelength will not be completely cut off after the control voltage is applied, which will lead to a significant increase in crosstalk
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[0061] In the following, the structure and working principle of the present invention will be introduced in accordance with the order of system scale from small to large in conjunction with the accompanying drawings.
[0062] figure 1 A structural schematic diagram of a single 1×(M1-2)×K1 three-level optical switch subsystem of the present invention is given. A 1×(M1-2)×K1 three-level optical switch subsystem 8 is composed of a M1×B1 multimode interferometer 1 and K1×B1 digital optical phase conjugate reflectors 2, where M1 is greater than or equal to 4, and K1 is greater than Equal to 1, B1 is greater than or equal to 2, M1 × B1 multimode interferometer 1 side is connected with M1 single-mode optical waveguide 3, of which the first single-mode optical waveguide is used as the input single-mode optical waveguide, and the remaining M1-1 single-mode optical waveguides The waveguide is used as the output single-mode optical waveguide; the other side of the M1×B1 multimode interferom...
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The invention discloses an optical switch array chip based on a digital optical phase conjugation principle. A multi-mode interference device and a digital optical phase conjugation reflector are used for constituting a 1*(M1-2)*K1 third-level optical switch subsystem, then q 1*(M1-2)*K1 third-level optical switch subsystems are in series connection in the longitudinal direction to form a 1*M*K1 second-level optical switch subsystem, further, p 1*M*K1 second-level optical switch subsystems and p-1 connectors are in series connection in the transverse direction to form a 1*M*K first-level optical switch subsystem, and finally N 1*M*K first-level optical switch subsystems connected to N input optical waveguides share M output optical waveguides, and an N*M*K optical switch array is formed in a parallel connection mode. The digital optical phase conjugation principle is used in the optical switch array, non-blocking optical switching can be conducted on K different wave lengths, and the optical switch array chip based on the digital optical phase conjugation principle is particularly suitable for optical switching and optical intersecting interconnection of optical communication network nodes and also can be used for optical interconnection between chips and optical interconnection inside an optical computer.
Description
Technical field [0001] The present invention relates to the technical field of optical communication and optical integration, and more specifically to an optical switch array chip based on the principle of digital optical phase conjugation. It is especially suitable for optical switching and optical cross interconnection of optical communication network nodes, and can also be used for chip integration. The optical interconnection within the optical computer. Background technique [0002] With the establishment of optical fiber backbone communication networks and the development of optical amplification technology and dense wavelength division multiplexing (DWDM) technology, the bottleneck that limits the speed and capacity of optical communication networks has shifted from information transmission between network nodes to information exchange between network nodes. Currently, the information exchange of network nodes still needs to be completed in the electrical domain. The inpu...
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IPC IPC(8): G02B6/124G02B6/125G02F1/01
Inventor 李志扬
Owner HUAZHONG NORMAL UNIV