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DECEMBER 2024 I PCB007 MAGAZINE 81 Figure 2: The LEGO brick principle of optical assembly for a fiber-to-fiber coupler on an optical circuit board. Figure 3: Optical backplane market growth to 2030. (Source: ElectroniCast) lasers to carry 1000 times more information, and without the losses or noise of electronic signals. Currently, first generation -1l-optical systems are being installed. ese carry thousands of channels of the 1 Gb/s Ethernets (terabit routers).