Authors
Abstract
The coupling tolerances is considered as an important parameters for the optical
designer and it can not be ignored. Since the coupling efficiency is affected by the
displacement of the optical components during the thermal expansion and the
assembling processes, so, the coupling tolerances are just as important as coupling
efficiency in the assessment of the optical coupling system. In this research the coupling
tolerances for laser source to single mode optical fiber have been analyzed, these
tolerances include: lateral offset, angular misalignment (tilt) and longitudinal offset for
the optical fiber, also the tolerances values have been limited, our criteria is (-4dB) as
coupling loss to point the tolerance of the coupling efficiency versus the misalignment
in the optical coupling system.
Keywords
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