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Free space optical interconnect system tolerant to misalignments and method of operation thereof
Free space optical interconnect system tolerant to misalignments and method of operation thereof
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机译：容忍未对准的自由空间光互连系统及其操作方法
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摘要
A free space optical interconnect system having redundant elements of a transmitter and/or receiver and being tolerant to misalignments is provided. The system provides monitoring of a misalignment between the transmitter and receiver, including determining of a direction and amplitude of the misalignment. When the amplitude of the misalignment is exceeding a pre-determined threshold value, the data to be transmitted is re-routed from the element which is misaligned to a redundant element selected along a direction associated with the direction of the misalignment so as to ensure data transmission through the system. In an embodiment of the invention, monitoring of the misalignment and determining of the direction and the amplitude of the misalignment is performed by measuring of a position of a laser spot of a dedicated alignment laser on a dedicated detector. Optionally, redundant elements may be arranged into clusters, the number of clusters being redundant and the number of elements in each cluster being sufficient to accommodate the number of data channels to be transmitted. The elements of the system may be arranged into one-dimensional or two-dimensional arrays, or any other required pattern, the elements of the transmitter being optical emitters or optical modulators. The system described above is suitable for both uni-directional and bi-directional data transmission. A corresponding method for operating of such a system is also provided.
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