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A manufacturing tolerance analysis of a 4×4-MMI working as a 90° optical hybrid is performed, both at the physical and system level. The relationship between well-known figures of merit with system penalty is also explored.
A numerical study of the impact that manufacturing tolerances have on the performance of an InP 4 4 MMI working as a 90 optical hybrid is presented, including simultaneous variations of width, thickness, and refractive index over the C and L bands. Simulation results for different figures of merit, such as optical common-mode rejection ratios (CMRRs) and phase errors, are provided for...
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