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In this paper, the non-ideal 45° coupled structure of the optical waveguide was simulated and analyzed by the finite element theory. Since the doctor-blade and grinding methods were used to product the electro-optical printed circuit board (EOPCB), the thickness of the core layer and the length of the 45° mirror side will be, respectively, in the variation of ±2μm. In this case, output power values...
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